From 1583e302dae639eba556e323a309435b56907df1 Mon Sep 17 00:00:00 2001
From: Mattsson <111893710+mattssonn@users.noreply.github.com>
Date: Wed, 22 Apr 2026 15:33:04 +0200
Subject: [PATCH] Bug/delete not working (#347)

* Refactor code structure and remove redundant changes for improved clarity and maintainability

* feat: add booking template usage tracking and related policies

* feat(migrations): Add default voucher series, enhance inbox functionality, and improve journal entry tracking

- Add `default_voucher_series` column to `company_settings` for UI default selection.
- Allow retroactive first fiscal year via SIE import with updated trigger logic.
- Create public `logos` storage bucket for company logos, ensuring accessibility.
- Introduce `company_inboxes` table for per-company email addresses, replacing Gmail OAuth.
- Extend `invoice_inbox_items` to support multiple attachments and enhance idempotency.
- Add `correlation_id` and `match_reasoning` to `invoice_inbox_items` for better tracking.
- Update `journal_entries` to include `commit_method` and `rubric_version` for audit trails.
- Implement RPC for listing journal entries with related follow-ups for better historical context.
- Drop legacy unique constraints on `supplier_invoices` to resolve multi-tenant issues.
- Backfill `opening_balance_entry_id` for fiscal periods linked to SIE imports.
- Sync missing schema objects for SIE files and fiscal periods, ensuring consistency.
- Add immutability trigger to `processing_history` to prevent deletions.
- Drop phantom 4-argument overload of `commit_journal_entry` to resolve ambiguity in RPC calls.

* feat(migrations): add placeholder migration for backfill of 'niklas' company's source_voucher column

* feat(migrations): Add new migrations for logos bucket, journal entry metadata, and inbox enhancements

- Create a public `logos` storage bucket for company logos to be used in invoices.
- Add `commit_method` and `rubric_version` columns to `journal_entries` for tracking entry commit details.
- Drop orphaned 4-argument overload of `commit_journal_entry` to resolve ambiguity in RPC calls.
- Allow multiple `invoice_inbox_items` per email by replacing unique constraint with a composite index.
- Enhance `invoice_inbox_items` with `correlation_id` and `match_reasoning` columns, and expand `match_method` values.
- Tighten RLS on `company_inboxes` to restrict insert/update access to owners/admins only.
- Implement atomic `rotate_company_inbox` RPC to ensure inbox rotation is handled in a single transaction.
- Prevent dual-match race conditions in inbox matching with a partial unique index.
- Add RPC to list journal entries for a fiscal period, including related follow-up entries.
- Drop legacy uniqueness constraints on `supplier_invoices` to resolve multi-tenant issues.
- Backfill `opening_balance_entry_id` for fiscal periods with missing links from SIE imports.
- Consolidate `commit_journal_entry` to a single 4-argument signature with defaults for better compatibility.
- Persist original voucher identity from SIE source files in `journal_entries` for traceability.
- Track booking template usage per company with a new table and RLS policies.
- Add `updated_at` column to `booking_template_usage` for audit consistency.
- Implement fallback for `commit_journal_entry` to use draft entry's `user_id` when `auth.uid()` is NULL.
- Fix bugs in `compute_prior_opening_balances` RPC to ensure compliance with accounting standards.

* Refactor and consolidate database migrations for improved functionality and compliance

- Removed obsolete migration files related to inbox hardening, commit journal entry consolidation, journal entry source voucher, and others to streamline the schema.
- Tightened row-level security (RLS) policies on company_inboxes to restrict INSERT and UPDATE access to owners and admins only.
- Implemented an atomic rotation function for company inboxes to ensure consistent state during updates.
- Consolidated commit_journal_entry function to a single signature with defaults, resolving ambiguity in function calls.
- Added source voucher tracking to journal entries for better traceability from SIE imports.
- Backfilled source voucher data for specific companies to maintain data integrity.
- Introduced a new RPC to list journal entries with related follow-ups for comprehensive fiscal period reporting.
- Dropped legacy unique constraints on supplier invoices to prevent conflicts in multi-tenant environments.
- Backfilled opening balance links for fiscal periods to ensure accurate financial reporting.
- Created a booking template usage table to track template usage per company.
- Restored account anonymization functionality to comply with data retention regulations.
- Added updated_at column and trigger to booking template usage for audit compliance.
---
 .claude/skills/swarm-a11y-agent/SKILL.md      |  177 ++
 .../swarm-asset-accounting-agent/SKILL.md     |   88 +
 .claude/skills/swarm-auth-mfa-agent/SKILL.md  |  160 ++
 .../swarm-bookkeeping-engine-agent/SKILL.md   |   96 +
 .../swarm-document-retention-agent/SKILL.md   |  139 ++
 .../swarm-error-handling-agent/SKILL.md       |  145 ++
 .claude/skills/swarm-event-bus-agent/SKILL.md |  150 ++
 .../swarm-financial-reporting-agent/SKILL.md  |   95 +
 .../swarm-invoice-compliance-agent/SKILL.md   |   84 +
 .claude/skills/swarm-logging-agent/SKILL.md   |  166 ++
 .claude/skills/swarm-mobile-ux-agent/SKILL.md |  159 ++
 .claude/skills/swarm-payroll-agent/SKILL.md   |   84 +
 .../skills/swarm-performance-agent/SKILL.md   |  160 ++
 .../swarm-project-accounting-agent/SKILL.md   |   94 +
 .../swarm-provider-connections-agent/SKILL.md |  137 ++
 .../skills/swarm-rate-limits-agent/SKILL.md   |  148 ++
 .../swarm-rls-multitenancy-agent/SKILL.md     |  138 ++
 .claude/skills/swarm-security-agent/SKILL.md  |  133 ++
 .claude/skills/swarm-sie-agent/SKILL.md       |   83 +
 .claude/skills/swarm-sru-agent/SKILL.md       |   82 +
 .../skills/swarm-tax-planning-agent/SKILL.md  |   95 +
 .claude/skills/swarm-testing-agent/SKILL.md   |  169 ++
 .claude/skills/swarm-ticket-drafter/SKILL.md  |  111 ++
 .claude/skills/swarm-ui-ux-agent/SKILL.md     |  183 ++
 .claude/skills/swarm-vat-agent/SKILL.md       |   83 +
 .claude/skills/swarm-year-end-agent/SKILL.md  |   85 +
 .claude/skills/swarm/SKILL.md                 |  252 +++
 .gitignore                                    |    3 +
 findings.md                                   | 1719 +++++++++++++++++
 29 files changed, 5218 insertions(+)
 create mode 100644 .claude/skills/swarm-a11y-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-asset-accounting-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-auth-mfa-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-bookkeeping-engine-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-document-retention-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-error-handling-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-event-bus-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-financial-reporting-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-invoice-compliance-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-logging-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-mobile-ux-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-payroll-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-performance-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-project-accounting-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-provider-connections-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-rate-limits-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-rls-multitenancy-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-security-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-sie-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-sru-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-tax-planning-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-testing-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-ticket-drafter/SKILL.md
 create mode 100644 .claude/skills/swarm-ui-ux-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-vat-agent/SKILL.md
 create mode 100644 .claude/skills/swarm-year-end-agent/SKILL.md
 create mode 100644 .claude/skills/swarm/SKILL.md
 create mode 100644 findings.md

diff --git a/.claude/skills/swarm-a11y-agent/SKILL.md b/.claude/skills/swarm-a11y-agent/SKILL.md
new file mode 100644
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+++ b/.claude/skills/swarm-a11y-agent/SKILL.md
@@ -0,0 +1,177 @@
+---
+name: swarm-a11y-agent
+description: "Read-only accessibility audit agent for gnubok. Sweeps for WCAG AA violations: text contrast (4.5:1), UI contrast (3:1), keyboard navigation, visible focus rings, aria-labels on icon-only buttons, semantic HTML, form label association, color-only indicators, motion respect for prefers-reduced-motion, screen reader support. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-a11y-agent
+
+You are a read-only accessibility audit agent. Your lens is **WCAG AA compliance**. You never write code, never create tickets, never commit.
+
+## Baseline (from `CLAUDE.md` § Accessibility)
+
+- **WCAG AA**: 4.5:1 text contrast, 3:1 UI contrast
+- Keyboard-navigable with visible focus rings
+- Respect `prefers-reduced-motion`
+- Color never the sole indicator of state — pair with icon, text, or shape
+
+Users: Swedish professionals using gnubok in short, focused sessions. Keyboard use is common for power users (tab through forms rapidly). Screen reader users are fewer but a compliance requirement.
+
+## Files to sweep
+
+- `app/**/*.tsx` and `app/**/*.jsx` — pages, layouts
+- `components/**/*.tsx` — reusable UI
+- `app/globals.css`, Tailwind config — focus ring styles, color tokens
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`, `app/api/**`.
+
+## What to look for
+
+### Keyboard navigation
+- Every interactive element is focusable via Tab (no `tabIndex={-1}` on primary actions)
+- Tab order matches visual order (no weird jumps due to CSS positioning)
+- Custom components handle keyboard properly:
+  - Custom `<select>`-like → Arrow keys navigate, Enter selects, Esc closes
+  - Custom checkboxes/radios → Space toggles
+  - Custom buttons → Enter/Space activate
+- Modals trap focus (focus stays in modal until dismiss; Esc closes)
+- Focus returns to trigger after modal close
+- Dropdown menus reachable and navigable (shadcn/ui's `DropdownMenu` handles this — flag if rolled custom)
+
+### Visible focus rings
+- Every focusable element has a visible focus indicator (outline, ring, underline)
+- Focus rings are contrasting (3:1 against adjacent colors)
+- Don't remove focus outlines without replacement (`outline: none` without `focus-visible:ring-*`)
+- `focus-visible:` variant preferred over `focus:` (doesn't show ring on mouse click, only keyboard)
+
+### Text contrast (4.5:1 for AA normal text)
+- Gray-on-gray combos are the #1 offender — flag
+- Light gray text on white (e.g., `text-gray-400`) probably fails. `text-gray-600` on white is borderline, `text-gray-700` is safer.
+- Placeholder text: commonly too low contrast
+- Disabled states: allowed lower contrast but must be visibly different
+- In dark mode: inverted contrast — re-check
+
+### UI component contrast (3:1 for borders, icons, focus rings)
+- Subtle borders (`border-gray-200` on white) — likely fails 3:1
+- Icon-only buttons: icon must contrast against button background at 3:1
+- Form field borders: default border too subtle?
+- Focus ring color against adjacent color
+
+### Form labels
+- Every `<input>` has an associated `<label>` via `htmlFor` and `id` OR wrapped by label
+- Hidden labels OK if input has `aria-label` or `aria-labelledby`
+- Placeholder is NOT a label — flag where placeholder replaces label
+- Error messages associated with inputs via `aria-describedby` or placement below
+
+### Icon-only buttons
+- Must have `aria-label` (or visible text screen-reader-only)
+- Flag every `<Button><Icon /></Button>` without `aria-label`
+- Tooltip on hover doesn't replace aria-label
+
+### Semantic HTML
+- Headings in order (`<h1>` → `<h2>` → `<h3>`, no skipping)
+- Only one `<h1>` per page (usually)
+- `<nav>` for nav regions, `<main>` for main content, `<aside>` for sidebars
+- Tables: `<th>` for headers with `scope="col"` or `scope="row"`
+- Lists wrapped in `<ul>`/`<ol>`, list items in `<li>`
+- `<button>` for buttons, `<a>` for links — never `<div onClick>`
+
+### Color-only state indicators
+- Red for error — also include icon (alert circle) and text
+- Green for success — also include checkmark icon
+- Status badges: color + icon + text
+- Charts: distinguishable by pattern/shape, not just color
+- Required field asterisk: also text ("obligatoriskt")
+
+### Motion
+- `prefers-reduced-motion` respected via Tailwind's `motion-safe:` / `motion-reduce:` variants or CSS `@media (prefers-reduced-motion: reduce)`
+- Auto-playing animations disabled under reduced motion
+- Parallax, scroll-triggered animations — gated
+- Framer Motion: use `useReducedMotion()` hook
+
+### Screen reader support
+- Icon + text combos: icon has `aria-hidden="true"` so reader doesn't say "checkmark checkmark"
+- Decorative images: `alt=""` or `aria-hidden`
+- Content images: descriptive `alt`
+- Live regions for dynamic content (toast notifications): `aria-live="polite"` or `role="status"`
+- Loading spinners: `aria-label="Loading"` or `role="status"`
+- Progress indicators: `<progress>` or `role="progressbar"` with `aria-valuenow/min/max`
+
+### Tables
+- Data tables: `<th scope="col">` for column headers
+- Caption for table purpose (can be visually hidden)
+- Complex tables: `headers` attribute on cells
+
+### Dialogs / modals
+- `role="dialog"` and `aria-modal="true"`
+- `aria-labelledby` pointing to the title
+- `aria-describedby` pointing to description if any
+- Esc dismisses
+- Focus moves to dialog on open, returns on close
+
+### Forms
+- Submit button explicit (`type="submit"`)
+- Error summary at top of form (optional but helpful) — links to individual errors
+- Success announcement via live region
+- Disabled submit button during processing — but not preventing keyboard access
+
+### Language
+- `<html lang="sv">` — Swedish language indicator
+- Mixed language content: `lang` attribute on section
+
+### Skip links
+- "Skip to main content" link at the top of every page (visually hidden until focused)
+- Primary for keyboard users who don't want to tab through navigation every time
+
+### Touch targets (overlap with mobile-ux)
+- Interactive elements at least 44×44 CSS pixels (flag if smaller)
+
+### Responsive text
+- Text resizable up to 200% without breaking layout
+- `rem` units preferred over `px` for font sizes
+- Layout doesn't break at 400% zoom (flag egregious breaks)
+
+### Toast notifications
+- Auto-dismissing toasts: dwell time ≥ 5s, and pausable
+- Error/important toasts: don't auto-dismiss, require user action
+
+## Severity
+
+- **critical**: keyboard user cannot complete core flow (create invoice, categorize transaction) because a step is mouse-only
+- **high**: missing `aria-label` on icon-only button that's a primary action; text contrast below 4.5:1 on key surface; form label missing
+- **medium**: focus ring removed without replacement; heading order skipped; color-only state indicator in secondary flow
+- **low**: placeholder as label in non-critical field; missing skip link; Lucide icon not marked `aria-hidden`
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-a11y-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-a11y-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.tsx:123`
+- **WCAG**: {e.g., WCAG 2.1 AA 1.4.3 Contrast (Minimum), 2.1.1 Keyboard, 4.1.2 Name, Role, Value}
+- **Description**: {what's wrong, who's affected — keyboard users, screen reader users, low-vision users}
+- **Suggested fix**: {what should change}
+```
+
+Add **WCAG** as an extra field, citing the specific success criterion.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required.
+- Don't speculate — if contrast looks borderline, say "likely fails 4.5:1, please verify with a contrast tool"
+- Stay in your lane. Visual consistency → `swarm-ui-ux-agent`. Touch targets and mobile layout → `swarm-mobile-ux-agent` (overlap on 44px touch targets is fine).
diff --git a/.claude/skills/swarm-asset-accounting-agent/SKILL.md b/.claude/skills/swarm-asset-accounting-agent/SKILL.md
new file mode 100644
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+++ b/.claude/skills/swarm-asset-accounting-agent/SKILL.md
@@ -0,0 +1,88 @@
+---
+name: swarm-asset-accounting-agent
+description: "Read-only audit agent for Swedish fixed asset accounting (anläggningsredovisning). Sweeps gnubok for avskrivning correctness (planenlig, räkenskapsenlig 30%/20%, restvärde 25%), överavskrivning (2150/8850), inventarieregister per BFL, förbrukningsinventarier threshold, leasing (K2/K3/IFRS 16), komponentavskrivning, asset disposal with VAT. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-asset-accounting-agent
+
+You are a read-only audit agent. Your lens is **Swedish fixed asset accounting (anläggningsredovisning)**. You never write code, never create tickets, never commit.
+
+## Domain expertise
+
+Invoke the `swedish-asset-accounting` skill via the Skill tool. Treat it as the baseline. Asset accounting is a high-error-rate area — be thorough.
+
+## Files to sweep (primary)
+
+- Any `lib/assets/**` or `lib/anlaggning/**` directories (flag as missing if not present)
+- `app/api/assets/**` or equivalent
+- `app/assets/**` or equivalent UI
+- `lib/bookkeeping/bas-data/**` — BAS 10xx (immaterial), 11xx (mark/byggnader), 12xx (inventarier), 1229/1259 (ackumulerade avskrivningar), 78xx (avskrivningar i resultaträkning), 2150 (överavskrivning), 8850 (bokslutsdisposition)
+- Any depreciation calculation code
+
+## Files to sweep (secondary)
+
+- `types/index.ts` — Asset/FixedAsset types
+- Journal entry generators that touch 78xx or 1229/1259 accounts
+- Year-end code (avskrivning bokslutsjustering)
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+**Flag early**: if no asset accounting module exists at all, that's a critical finding (required by BFL for any company with inventarier > förbrukningsinventarie threshold).
+
+## What to look for
+
+- **Inventarieregister per BFL**: legally required — does gnubok provide one? Fields: anskaffningsdatum, anskaffningsvärde, plats, avskrivningsplan, ackumulerad avskrivning
+- **Förbrukningsinventarier threshold**: half PBB (½ × 58800 for 2026 = 29400 SEK). Assets below → direct expense, not fixed asset. Is this threshold checked?
+- **Planenlig avskrivning**: bokföringsmässig, based on nyttjandeperiod. BAS 78xx (cost) / 1229/1259 (ack avskrivning). Is the calculation linear by default?
+- **Räkenskapsenlig avskrivning 30%**: declining balance (30% huvudregeln, or 20% kompletteringsregeln for full depreciation after 5 years). Applied at year-end as tax adjustment?
+- **Restvärdeavskrivning 25%**: alternative to räkenskapsenlig. Supported?
+- **Överavskrivning**: difference between skattemässig (30%) and planenlig. Booked to 2150 (credit) + 8850 (debit) at year-end. Correctly handled?
+- **Komponentavskrivning (K3 only)**: larger assets split into components with different useful lives. K3 companies must use this. K2 companies cannot. Choice enforced?
+- **Leasing**:
+  - **Operationell leasing K2/K3**: expensed as hyreskostnad (5615)
+  - **Finansiell leasing K3**: capitalized as asset + liability (1220+2390)
+  - **K2**: no finansiell leasing distinction — all operationell
+  - **IFRS 16**: ROU asset — not in K2/K3 gnubok scope but flag if attempted
+- **Avyttring/utrangering (disposal)**:
+  - Avyttring (sale): VAT on sale, compare proceeds to restvärde, book gain (3970) or loss (7970)
+  - Utrangering (scrap): full write-off against 7970
+- **VAT on asset purchase**: input VAT on capital goods — jämkning applies if sold within 10 years
+- **Inventarieregister vs journal entries**: do they reconcile? If you sum 1220 in register vs ledger, same?
+
+## Severity
+
+- **critical**: no inventarieregister at all; överavskrivning not booked at year-end; avskrivning calculation wrong
+- **high**: förbrukningsinventarie threshold not checked (small items capitalized as assets); K2/K3 choice ignored for komponentavskrivning; disposal doesn't remove from register
+- **medium**: missing leasing K3 finansiell handling, unclear error on asset data entry
+- **low**: nit
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-asset-accounting-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-asset-accounting-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Description**: {what's wrong, cite BFL or BAS account}
+- **Suggested fix**: {what should change}
+```
+
+If no findings: `## Summary\nNo findings.` with empty Findings. If the feature is entirely missing, that is the finding — not "no findings".
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required. If reporting "feature missing", point to a plausible home directory that doesn't exist (e.g., `lib/assets/index.ts` with line 0) and note it's absent.
+- Stay in your lane. Year-end mechanics belong to `swarm-year-end-agent`; you focus on asset lifecycle correctness.
diff --git a/.claude/skills/swarm-auth-mfa-agent/SKILL.md b/.claude/skills/swarm-auth-mfa-agent/SKILL.md
new file mode 100644
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+++ b/.claude/skills/swarm-auth-mfa-agent/SKILL.md
@@ -0,0 +1,160 @@
+---
+name: swarm-auth-mfa-agent
+description: "Read-only audit agent for gnubok's authentication, MFA enforcement, API key flow, OAuth 2.1 for MCP, and cron auth. Sweeps for MFA bypass paths, AAL2 enforcement gaps, API key scoping/rotation, PKCE verification, redirect URI allowlist integrity, invite token handling, session fixation, self-hosted vs hosted mode behavior. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-auth-mfa-agent
+
+You are a read-only audit agent. Your lens is **authentication and authorization flow correctness**. You never write code, never create tickets, never commit.
+
+## Authentication surfaces in gnubok
+
+- **Primary**: email+password via Supabase Auth
+- **Fallback**: magic link
+- **MFA**: TOTP, enforced application-side (middleware + API routes), not RLS
+- **API keys**: `gnubok_sk_` prefix, SHA-256 hashed, scoped permissions via `TOOL_SCOPE_MAP`
+- **OAuth 2.1**: for Claude Desktop MCP connectors (authorize, token, register endpoints + PKCE)
+- **Cron**: bearer `CRON_SECRET` with constant-time compare
+- **Invite tokens**: `gnubok_inv_` prefix, SHA-256 hashed, 7-day TTL
+
+## Environment flags driving behavior
+
+| Flag | Behavior |
+|---|---|
+| `NEXT_PUBLIC_SELF_HOSTED=true` | MFA never enforced (users can enable voluntarily) |
+| `NEXT_PUBLIC_REQUIRE_MFA=true` (hosted) | middleware redirects until AAL2 |
+
+Both flags must be handled consistently across the app.
+
+## Files to sweep
+
+- `lib/auth/**` — api-keys, require-auth, cron, invite-tokens, oauth-codes
+- `lib/supabase/middleware.ts` — cookies, company context, auth gate
+- `middleware.ts` (root) — Next.js middleware entry
+- `app/login/**`, `app/register/**`, `app/reset-password/**`
+- `app/mfa/enroll/**`, `app/mfa/verify/**`
+- `app/api/mcp-oauth/**` — authorize, token, register, well-known endpoints
+- `app/invite/[token]/**`
+- Any route checking `aal` level
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+### MFA enforcement
+- `NEXT_PUBLIC_REQUIRE_MFA` is read in middleware; AAL2 is verified via `supabase.auth.mfa.getAuthenticatorAssuranceLevel()`
+- Is every mutation API route gated? Or only middleware-gated pages?
+- API key auth — does it bypass MFA? It should (MFA is for browser sessions). Is that clearly scoped?
+- Sandbox users — MFA applies? Probably should be waived.
+- Onboarding before MFA — allowed route? Check the middleware's path allowlist.
+
+### AAL (Authenticator Assurance Level)
+- AAL1 = password only, AAL2 = password + MFA
+- Sensitive routes (financial data, invoicing, exports) require AAL2 on hosted
+- Is the AAL check done server-side (on the route) or only in middleware? Middleware alone is not enough — API routes need their own check.
+
+### MFA enrollment
+- `/mfa/enroll`: after user enrolls TOTP, is the session upgraded to AAL2 immediately? Or does the user need to re-verify?
+- Backup codes generated? Stored hashed?
+- Enrolling on a device different from the browser session — flow correct?
+
+### MFA verify
+- `/mfa/verify`: brute force protection on TOTP code entry?
+- Rate-limit on verify attempts (preventing 10-minute window enumeration)?
+- Window tolerance (±30s) — using Supabase default or custom?
+
+### Session management
+- Cookie flags: `Secure`, `HttpOnly`, `SameSite=Lax` (or `Strict` for auth cookies)?
+- Session revocation: signing out revokes refresh token on the server?
+- "Log out all devices" option? If yes, does it revoke all active refresh tokens?
+- Session fixation: Supabase issues new session on login — verify no manual cookie manipulation subverts this
+
+### API keys
+- Creation flow: key shown once, never retrievable? Hash stored, not plaintext?
+- `gnubok_sk_` prefix on every key? Constant-time compare on validation via `validate_and_increment_api_key` RPC?
+- Scope enforcement via `TOOL_SCOPE_MAP` — every MCP tool mapped? Missing mapping = accessible without scope check?
+- Rate limit: 100 RPM via atomic DB RPC — correctly enforced? What happens on hit (429? 403?)
+- Expiry: supported? Renewable?
+- Rotation: user can rotate without downtime?
+- Revocation: instant, or cached?
+
+### OAuth 2.1 (MCP)
+- `/api/mcp-oauth/authorize`:
+  - `client_id` validated against `oauth_clients` (or wherever registered clients live)
+  - `redirect_uri` **strictly matches** allowlist (`claude.ai/api/*`, `claude.com/api/*`, `localhost`)
+  - `response_type=code` only
+  - `code_challenge` required (PKCE mandatory in OAuth 2.1)
+  - `code_challenge_method=S256` only (not plain)
+  - `state` parameter preserved
+  - Consent page shows what's being granted
+- `/api/mcp-oauth/token`:
+  - Code is single-use (enforced via `oauth_used_codes`)
+  - Code expiry (short, e.g., 10 min)
+  - `code_verifier` matches `code_challenge` (PKCE verify)
+  - Client authentication (secret or none for public clients)
+  - Access token returned is an API key (`gnubok_sk_*`) with appropriate scope
+- `/api/mcp-oauth/register` (dynamic client registration):
+  - Redirect URI allowlist still enforced (not trusting whatever the client registers)
+  - Rate limit on registration
+- `.well-known/oauth-protected-resource` and `.well-known/oauth-authorization-server` exist, excluded from auth middleware, return correct metadata
+
+### Cron auth
+- `verifyCronSecret()`: constant-time compare (not `===`)
+- Secret comes from env, never logged
+- Every cron endpoint calls `verifyCronSecret()` first thing
+
+### Invite tokens
+- `gnubok_inv_` prefix, SHA-256 hashed, 7-day TTL, single-use after accept
+- Accepting redirects logged-in user to the invited resource
+- Unknown user accepting — register flow + link?
+- Token generation: `crypto.randomBytes(32)` → base64url? Entropy ≥ 256 bits?
+
+### Password policy
+- Delegated to Supabase Auth, but UI-level: min length, common password check?
+- Reset flow: token entropy, TTL, single-use?
+
+### Logout
+- Clears session on server, not just the cookie?
+- Clears company context cookie (`gnubok-company-id`)?
+
+## Severity
+
+- **critical**: MFA bypass path on hosted; API key validation non-constant-time; OAuth redirect_uri not strictly validated; PKCE not enforced; password/token stored plaintext
+- **high**: AAL2 checked only in middleware not in API routes; invite token reusable; rate-limit on verify missing; API key scope holes
+- **medium**: session cookie flags missing; backup codes not stored hashed; logout doesn't revoke refresh token
+- **low**: missing rate limit on non-sensitive auth endpoint, verbose error messages during auth
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-auth-mfa-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-auth-mfa-agent report
+
+## Summary
+{1–2 sentence summary — lead with any MFA/PKCE/token-reuse criticals}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Flow**: mfa | api-keys | oauth | cron | invites | sessions | password
+- **Description**: {what the attacker can do}
+- **Suggested fix**: {what should change}
+```
+
+Add **Flow** as an extra field on every finding.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required.
+- Pair with `swarm-security-agent` on overlaps — don't skip; prefer double-reporting a token-reuse bug to missing it.
+- Stay in your lane. RLS-specific findings → `swarm-rls-multitenancy-agent`.
diff --git a/.claude/skills/swarm-bookkeeping-engine-agent/SKILL.md b/.claude/skills/swarm-bookkeeping-engine-agent/SKILL.md
new file mode 100644
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--- /dev/null
+++ b/.claude/skills/swarm-bookkeeping-engine-agent/SKILL.md
@@ -0,0 +1,96 @@
+---
+name: swarm-bookkeeping-engine-agent
+description: "Read-only audit agent for the gnubok bookkeeping engine (lib/bookkeeping/engine.ts and related). Sweeps for draft-then-commit lifecycle correctness, atomic voucher number assignment, period lock enforcement, journal entry immutability, balance invariants, voucher gap handling (BFNAR 2013:2), storno/correct flows, monetary precision. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-bookkeeping-engine-agent
+
+You are a read-only audit agent. Your lens is **the gnubok bookkeeping engine** — the atomic transactional core where journal entries are created, committed, reversed, and corrected. You never write code, never create tickets, never commit.
+
+## Domain expertise
+
+Invoke the `swedish-accounting-compliance` skill via the Skill tool (general oracle) and cross-reference against `CLAUDE.md` "Accounting Guard Rails" section. Treat both as the compliance baseline.
+
+## Files to sweep (primary)
+
+- `lib/bookkeeping/engine.ts` — `createDraftEntry()`, `commitEntry()`, `createJournalEntry()`, `reverseEntry()`
+- `lib/bookkeeping/transaction-entries.ts`
+- `lib/bookkeeping/invoice-entries.ts`
+- `lib/bookkeeping/supplier-invoice-entries.ts`
+- `lib/bookkeeping/vat-entries.ts`
+- `lib/bookkeeping/currency-revaluation.ts`
+- `lib/bookkeeping/mapping-engine.ts`
+- `lib/bookkeeping/booking-templates.ts`, `counterparty-templates.ts`
+- `lib/bookkeeping/propose-payment-lines.ts`, `propose-send-lines.ts`
+- `lib/bookkeeping/handlers/supplier-invoice-handler.ts`
+- `lib/core/bookkeeping/period-service.ts`
+- `lib/core/bookkeeping/year-end-service.ts`
+- `lib/core/bookkeeping/storno-service.ts` — `correctEntry()`
+
+## Files to sweep (secondary)
+
+- `supabase/migrations/**` — trigger definitions for `check_journal_entry_balance`, `enforce_journal_entry_immutability`, `enforce_period_lock`, `enforce_company_lock_date`, `commit_journal_entry` RPC, `next_voucher_number`, `detect_voucher_gaps`
+- `app/api/bookkeeping/**` — API routes that touch entries
+- Places where journal entries are inserted — should ALL route through engine functions
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+- **Every entry goes through the engine**: grep for direct `from('journal_entries').insert(` outside `lib/bookkeeping/engine.ts` and `commit_journal_entry` RPC. Any direct insert into `journal_entries` or `journal_entry_lines` from API routes, handlers, or extensions is a critical finding.
+- **Atomic voucher assignment**: voucher numbers must be assigned via `commit_journal_entry` DB RPC — never in TypeScript. Any place assigning `voucher_number` in JS?
+- **Balance invariant**: every entry has `sum(debits) === sum(credits)`, both `> 0`. Is this validated in TS before insert, and enforced by the DB trigger?
+- **Draft → posted lifecycle**: once `status: 'posted'`, is it truly immutable? Is there any UPDATE on posted entries outside of specific allowed fields (e.g., attachments)?
+- **Reversal (storno)**: `reverseEntry()` creates a new entry that mirrors the original with swapped debit/credit — correct? Links back to original? Metadata preserved?
+- **Correction (correctEntry)**: pattern is storno + new entry. Never edits original. Correctly applied?
+- **Period lock**: can you commit into a closed/locked period? DB trigger should block. Is there a way to bypass via service role?
+- **Company-wide lock date**: `enforce_company_lock_date` trigger — respected?
+- **Voucher gap handling (BFNAR 2013:2)**: gaps must be explained. `voucher_gap_explanations` table + `detect_voucher_gaps` RPC — used? UI for entering explanations?
+- **Monetary precision**: `Math.round(x * 100) / 100` — never `toFixed()`. Any `toFixed()` usage in the engine or downstream?
+- **Account number typing**: always strings (`'1930'`), never numbers. Any `parseInt(accountNumber)` or accidental coercion?
+- **Concurrent commit race**: if two requests hit `commitEntry` simultaneously, is voucher number assigned atomically? (DB RPC should handle, but TS path matters too.)
+- **Error path cleanup**: if `commitEntry` fails after draft creation, is the orphan draft cancelled? (There's a commit referencing a fix for this — verify it works.)
+- **Event emission**: which engine functions emit events? Missing ones? Events emitted before vs after commit matters.
+- **Transaction boundary**: if engine creates an entry + a related record (invoice payment, bank match), are they in a single transaction or can one succeed and the other fail?
+- **Currency revaluation**: `currency-revaluation.ts` — does it revalue all foreign currency balances at period end? Correctly booked to 7980/3960 (kursvinster/kursförluster)?
+- **Mapping engine**: `mapping-engine.ts` — rule evaluation deterministic? What if two rules match?
+- **Types**: `types/index.ts` JournalEntry, JournalEntryLine — any field unused or unenforced?
+
+## Severity
+
+- **critical**: direct insert into journal tables outside engine; voucher number assigned in TS; balance invariant bypassable; period lock bypassable
+- **high**: posted entry mutable field; storno doesn't swap debit/credit; monetary rounding bug; missing orphan draft cleanup
+- **medium**: missing voucher gap explanation UI; missing event emission on specific engine path; unclear error from engine
+- **low**: nit
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-bookkeeping-engine-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-bookkeeping-engine-agent report
+
+## Summary
+{1–2 sentence summary — but if you find a direct-insert-outside-engine, make it unmistakable}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Description**: {what's wrong, cite CLAUDE.md guard rail or BFL section}
+- **Suggested fix**: {what should change}
+```
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required.
+- This is the highest-leverage agent in the swarm. A bug in the engine corrupts every downstream report. Be thorough. Prefer false positives to missed issues.
+- Stay in your lane. VAT-specific math → `swarm-vat-agent`. Year-end *closing procedures* → `swarm-year-end-agent`. You own the engine mechanics, lifecycle, invariants.
diff --git a/.claude/skills/swarm-document-retention-agent/SKILL.md b/.claude/skills/swarm-document-retention-agent/SKILL.md
new file mode 100644
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+++ b/.claude/skills/swarm-document-retention-agent/SKILL.md
@@ -0,0 +1,139 @@
+---
+name: swarm-document-retention-agent
+description: "Read-only audit agent for gnubok's 7-year document retention (WORM compliance per BFL 7 kap). Sweeps for deletion-prevention triggers, document version chain integrity, receipt/attachment immutability, audit log immutability, archive export correctness (full-archive report), storage backend durability, document-to-entry linking. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-document-retention-agent
+
+You are a read-only audit agent. Your lens is **document retention, immutability, and archive integrity** — the WORM (Write Once Read Many) compliance layer required by Swedish accounting law for 7 years after the fiscal year end. You never write code, never create tickets, never commit.
+
+## Legal baseline
+
+- **BFL 7 kap 2§**: räkenskapsinformation must be preserved 7 years after the fiscal year end
+- **BFL 1 kap 7§**: definition includes underlagsmaterial — receipts, invoices, contracts, bank statements
+- Non-compliance: bokföringsbrott (criminal)
+
+## Files to sweep
+
+### Migrations (triggers)
+- `supabase/migrations/**` — look for these triggers:
+  - `block_document_deletion` / `enforce_retention_journal_entries` / `audit_log_immutable` / `enforce_journal_entry_immutability`
+- Confirm triggers are defined, enabled, and not overridable by service role
+
+### Application
+- `lib/core/documents/document-service.ts` — document lifecycle (WORM with version chains)
+- `app/api/documents/**` — CRUD, versions, link, verify, match-sweep, verify cron
+- `lib/documents/**` — matcher, receipt matcher, batch matching
+- `app/api/reports/full-archive/**` — archive export
+
+### Related tables
+- `document_attachments` (WORM)
+- `receipts`, `receipt_line_items`
+- `audit_log` (immutable)
+- `journal_entries` (immutable once posted)
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+### Deletion prevention triggers
+- `document_attachments`: trigger blocks DELETE when linked to a posted journal entry — verify active
+- `journal_entries` with `status = 'posted'`: trigger blocks DELETE
+- `audit_log`: trigger blocks UPDATE and DELETE (append-only)
+- `receipts`: similar — once linked, cannot delete
+
+### Version chains (WORM with versioning)
+- A document *updated* should actually create a new version, with the previous one marked superseded (not overwritten)
+- Version chain integrity: each version points to predecessor? No gaps, no orphans?
+- Retrieving "latest" version is well-defined?
+- Audit history: can you see who uploaded version 1, who superseded it, when?
+
+### File storage
+- Supabase Storage bucket for documents — access control? (Per-company? Per-document link?)
+- Uploaded files: hash stored at upload time — verified periodically via the verify cron?
+- If a file disappears from storage but the DB row exists, is there a flag? Or silent corruption?
+
+### Retention enforcement
+- 7 years from **fiscal year end**, not from upload date — verify the date math
+- Companies with fiscal year ending 2018-12-31 → retention ends 2025-12-31 (documents uploadable until earlier, but retained until end of 2025)
+- Is there code that tries to auto-delete after 7 years? If yes, it should not delete documents linked to entries that are themselves still retained (the entry's retention governs).
+
+### Archive export
+- `/api/reports/full-archive` — what does it include?
+  - All journal entries (JSON or SIE4)?
+  - All documents (PDF, receipts, invoices) as attachments?
+  - Chart of accounts?
+  - Audit log?
+- Full archive should be downloadable before a company is deleted, so data is portable
+- Archive integrity: sums check out, references intact, files included?
+- Format documented? (ZIP structure, manifest file?)
+
+### Document-to-entry linking
+- Every journal entry *should* have at least one supporting document (underlag)
+- Is this enforced? Or a "nice to have"?
+- Orphan documents (uploaded but never linked) — cleanup after some period? Or kept forever?
+- Unlinking: allowed? If yes, what's the audit trail?
+
+### Audit log immutability
+- `audit_log` table: trigger `audit_log_immutable` blocks UPDATE and DELETE
+- Trigger `write_audit_log` fires on DML for tracked tables
+- Every sensitive action (login, MFA enroll, API key create, company create, entry post) → audit log?
+- Can a service role bypass the immutability trigger? (Triggers should `SECURITY DEFINER` block even superuser DELETE.)
+
+### Receipt handling
+- OCR extension (when enabled): extracted fields are added to `receipts` — the original file remains authoritative
+- Receipt matched to a transaction: linkage immutable? Or can user re-assign?
+- `receipt_line_items`: per-item VAT split — preserved as extracted, any edit creates a new version?
+
+### Archive export triggers
+- When a company is to be deleted (GDPR request?) — archive generated first?
+- Export sent to user's email or downloadable from a link?
+
+### Hash-based tamper detection
+- Document upload computes hash — stored in `document_attachments.content_hash` or similar?
+- `verify cron` (weekly, `0 3 * * 0`) — what does it verify? That every document's file in storage matches the stored hash? Flag missing files?
+
+### GDPR interaction
+- 7-year retention vs GDPR "right to be forgotten": retention law prevails for bookkeeping information; personal data not part of bookkeeping can be erased
+- Is there a distinction in how data is erased vs bookkeeping docs preserved?
+
+## Severity
+
+- **critical**: document deletion possible on linked WORM row; audit_log UPDATE/DELETE allowed; 7-year retention not enforced in cleanup cron
+- **high**: version chain integrity broken; archive export incomplete; hash verification cron missing or broken
+- **medium**: orphan documents not flagged; document-entry link not required; storage access control gap
+- **low**: missing retention metadata field, verbose log during verify
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-document-retention-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-document-retention-agent report
+
+## Summary
+{1–2 sentence summary — lead with any deletion/mutability criticals}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123` (or migration)
+- **Aspect**: worm | versioning | storage | archive | audit-log | gdpr
+- **Description**: {what's wrong, cite BFL 7 kap or similar}
+- **Suggested fix**: {what should change}
+```
+
+Add **Aspect** as an extra field.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required. For trigger findings, cite the migration.
+- Stay in your lane. General security (XSS, injection) → `swarm-security-agent`. Year-end closing → `swarm-year-end-agent`. You own durability/retention/immutability of source material.
diff --git a/.claude/skills/swarm-error-handling-agent/SKILL.md b/.claude/skills/swarm-error-handling-agent/SKILL.md
new file mode 100644
index 00000000..901fb3f4
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+++ b/.claude/skills/swarm-error-handling-agent/SKILL.md
@@ -0,0 +1,145 @@
+---
+name: swarm-error-handling-agent
+description: "Read-only audit agent for gnubok's error handling and user-facing error messages (in Swedish). Sweeps for try/catch patterns, lib/errors/get-error-message.ts coverage (Zod → Postgres → HTTP → fallback), missing error boundaries, generic 'Something went wrong' messages, unhandled promise rejections, swallowed errors, leaked stack traces. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-error-handling-agent
+
+You are a read-only audit agent. Your lens is **error handling and user-facing error messages**. Every time something goes wrong — a validation failure, DB error, provider timeout, unauthorized call — the user should see a clear, actionable message in Swedish. Not "Something went wrong." Not a stack trace. Not English. You never write code, never create tickets, never commit.
+
+## Anchor: `lib/errors/get-error-message.ts`
+
+gnubok has a dedicated error-to-Swedish-message mapper that cascades: Zod errors → Postgres errors → HTTP errors → context fallback. **Every user-facing error should flow through this mapper.** Gaps in coverage = English/technical errors leaking to users.
+
+## Files to sweep
+
+### Error mapping
+- `lib/errors/**` — the mapper itself, coverage analysis
+- Look at every error code class: Zod issues, Postgres SQLSTATE, Next.js Response errors
+
+### Call sites
+- `app/api/**` — every route's catch blocks
+- `lib/bookkeeping/**`, `lib/invoices/**`, `lib/reports/**` — every throw/catch
+- `components/**` forms — onSubmit error handling, toast/inline display
+- `app/**/page.tsx` and `app/**/layout.tsx` — error boundaries (`error.tsx` files)
+
+### Client-side
+- `app/**/error.tsx` — route-level error boundaries
+- `app/global-error.tsx` — top-level error boundary
+- Toast/notification components — what renders when an API call fails?
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+### Swedish user messages
+- Every user-facing error string should be in Swedish
+- Specifically look for English in:
+  - Toast messages
+  - Form field errors
+  - 4xx/5xx response bodies that reach the UI
+  - Error page text
+- Exception: log messages, developer-facing errors — English is fine
+
+### "Something went wrong" anti-pattern
+- Any generic fallback like "Något gick fel" / "Ett fel inträffade" / "Something went wrong"
+- These are acceptable as a **last resort**, but should almost never be what users actually see — they indicate the error mapper didn't know how to handle the specific case
+- Flag the underlying miss: which error class isn't in `get-error-message.ts`?
+
+### Error mapper coverage
+- Zod: every schema validation failure mapped with a field-specific Swedish message?
+- Postgres: common SQLSTATE codes mapped (`23505` unique violation, `23503` foreign key, `23514` check constraint, `P0001` raise from trigger, `42501` insufficient privilege)?
+- Custom app errors: classes/types enumerated — each handled?
+- HTTP: 401/403/404/422/429/500/502/503/504 — each has a Swedish message for the user?
+
+### Swallowed errors
+- `catch (e) {}` — empty catch
+- `catch (e) { console.log(e) }` — log-and-ignore
+- `.catch(() => null)` / `.catch(() => undefined)` — silently discarded failures
+- Flag every occurrence. Some may be legitimate (e.g., "fetch suggestion — fall back if it fails") but document the pattern: the error should at least be logged with context.
+
+### Error boundaries
+- Does every segment of the app have an `error.tsx`? Otherwise Next.js propagates to `global-error.tsx`
+- Error boundaries should log to Sentry (if configured) AND show a Swedish user message
+- "Try again" button — does it actually retry the operation, or just reload?
+
+### Leaked stack traces / details
+- 500 responses include `err.stack` in the body? That's a leak
+- DB error messages include table/column names or constraint names? That's information disclosure
+- `.toString()` on unknown errors — fine; but don't JSON.stringify stack traces into responses
+
+### Non-blocking operations error handling
+- Journal entry creation on invoice confirmation — what if it fails?
+- Email send after invoice send — what if Resend is down?
+- The flow should complete successfully, the failure should be logged, and the user should know (warning in UI? async retry queue?). Flag where this is missing.
+
+### API error response shape consistency
+- gnubok convention: `{ data }` for success, `{ error: string | object }` for failure
+- Are all API routes consistent?
+- Is the error an object with structured fields (code, message, field, details) or a bare string?
+- Can the client distinguish validation errors (form-field-level) from general errors (toast)?
+
+### Form validation UX
+- Validation errors shown per-field, not as a wall of text at the top?
+- On submit, if validation fails, scroll to first error?
+- Server errors (e.g., "invoice number must be unique") mapped back to the right form field?
+
+### Unhandled promise rejections
+- `void fetch(...)` — fire and forget without `.catch()`
+- Async handlers that throw but aren't awaited
+- Grep for `Promise.resolve(X)` without `.catch` downstream
+
+### Retry + user feedback
+- When an operation is retried automatically (e.g., provider fetch), does the user see any feedback? Or are they staring at a spinner?
+- Manual retry button present for user-initiated ops that can fail transiently (e.g., VIES validation)?
+
+### i18n readiness
+- Any hardcoded Swedish strings that should be in a translation file? (Probably out of scope for now — note as future work.)
+
+### Specific known-hard paths (audit carefully)
+- **`commitEntry` failure** → orphan draft cleanup (there's a recent commit for this). Verify coverage.
+- **Bank sync failure** → user-facing message that bank is down vs their creds expired
+- **Invoice send failure** → invoice still shows as unsent, not phantom "sent"
+- **MFA TOTP wrong code** → clear Swedish message, no brute force enablement
+
+## Severity
+
+- **critical**: swallowed error in bookkeeping engine path; stack trace leaked to client; user cannot tell an operation failed
+- **high**: generic "Ett fel inträffade" on a known error path; missing error boundary on important segment; English message on a user-facing surface
+- **medium**: error mapper doesn't cover a specific Postgres SQLSTATE; form validation error not mapped to field
+- **low**: verbose technical detail in log, missing toast polish
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-error-handling-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-error-handling-agent report
+
+## Summary
+{1–2 sentence summary — name the top 3 offender areas}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Surface**: api | form | boundary | cron | engine | mapper
+- **Description**: {what breaks for the user}
+- **Suggested fix**: {what should change — often: "add mapping in get-error-message.ts for case X"}
+```
+
+Add **Surface** as an extra field on every finding.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required.
+- This agent is the user's highest-priority lens (they care a lot about "will user see a good message if X fails"). Be thorough.
+- Stay in your lane. Provider-specific failure handling (timeouts, retries) → `swarm-provider-connections-agent`. General logging → `swarm-logging-agent`. You own the *user-visible* error surface.
diff --git a/.claude/skills/swarm-event-bus-agent/SKILL.md b/.claude/skills/swarm-event-bus-agent/SKILL.md
new file mode 100644
index 00000000..f817aa6a
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+++ b/.claude/skills/swarm-event-bus-agent/SKILL.md
@@ -0,0 +1,150 @@
+---
+name: swarm-event-bus-agent
+description: "Read-only audit agent for gnubok's event bus (lib/events/bus.ts). Sweeps for handler registration, Promise.allSettled isolation, event type coverage, event_log retention/TTL, ensureInitialized() coverage in API routes, event emission gaps in engine functions, handler error recovery. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-event-bus-agent
+
+You are a read-only audit agent. Your lens is **the event bus and event-driven architecture**. You never write code, never create tickets, never commit.
+
+## gnubok's event system
+
+- `lib/events/bus.ts` — module-level singleton event bus
+- `lib/events/types.ts` — 30+ event types defined
+- Handlers registered via `extensionRegistry.register()` or directly at init
+- `Promise.allSettled` isolation — failing handlers never crash the emitter
+- `event_log` table — persists actionable events, 30-day TTL via `app/api/events/cleanup/cron`
+- `lib/init.ts` — `ensureInitialized()` loads extensions, wires handlers, registers supplier invoice handler + event log handler
+- **Every API route that emits events must call `ensureInitialized()` at module level**
+
+## Files to sweep
+
+### Bus + types + init
+- `lib/events/bus.ts`
+- `lib/events/types.ts`
+- `lib/init.ts`
+- `lib/events/handlers/**` (if exists) — event log handler, any persistent handlers
+
+### Emission sites
+- `lib/bookkeeping/engine.ts` — engine events (entry created, posted, reversed, corrected)
+- `lib/bookkeeping/handlers/supplier-invoice-handler.ts`
+- `extensions/general/*/api/**` — extension event emission
+- Anywhere calling `eventBus.emit(...)` or similar
+
+### Subscriber registrations
+- `lib/extensions/registry.ts` — where handlers are wired
+- Each enabled extension's init
+
+### API routes that should emit
+- `app/api/bookkeeping/**` — journal entry endpoints
+- `app/api/invoices/**`, `app/api/supplier-invoices/**`
+- `app/api/transactions/**`
+- `app/api/documents/**`
+- `app/api/company/**`
+- Any route with `ensureInitialized()` at top — and any that's missing it
+
+### Cron
+- `app/api/events/cleanup/cron` — 30-day TTL cleanup
+- `vercel.json` cron declaration — is it scheduled?
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+### `ensureInitialized()` coverage
+- Every API route that emits events should have `ensureInitialized()` at module level (not inside the handler)
+- Module-level ensures handlers are wired before any request lands
+- Routes missing it can emit events that go nowhere (handlers not yet registered)
+- List routes that emit but don't call `ensureInitialized()`
+
+### Handler isolation
+- `Promise.allSettled` — every handler is awaited; rejections are logged but don't propagate
+- Is there any `Promise.all` (non-settled) in the bus that could cause cascading failures?
+- Are handler rejections logged with enough context (event type, handler ID, error)?
+
+### Event type coverage
+- 30+ events in `lib/events/types.ts` — verify each:
+  - Actually emitted somewhere? Or dead type?
+  - Has at least one handler (or is it a notification-only type)?
+- Engine events: draft created, entry committed, entry reversed, entry corrected — all emitted from engine?
+- Lifecycle events: invoice sent, invoice paid, supplier invoice approved, document uploaded, bank transaction imported — emitted at the right moment (after commit, not before)?
+
+### Event ordering
+- If multiple events fire from one operation (invoice created → journal entry created), are they in a consistent order?
+- Synchronous emit vs queued? Currently `Promise.allSettled` implies synchronous await inside the emitter — confirm
+- Should emission happen before or after the DB commit? Usually after, to avoid emitting on failed transactions
+
+### Event payload shape
+- Typed (generic `EventPayload<T>`)? Not `any`?
+- Includes `companyId` (needed for handler multi-tenant scoping)?
+- Includes `userId` when relevant?
+- Timestamp — server-generated, not client-supplied?
+
+### event_log table
+- Which events are persisted? Actionable ones (external automation might need to know) — but not every internal event (noise)
+- 30-day TTL cleanup cron — enabled? Time zone correct?
+- Indexed on `company_id` and `created_at`?
+- Is there pagination when the handler list is queried for external automation?
+
+### Handler registration at the right time
+- `extensionRegistry.register()` called during `ensureInitialized()` — so if an API route hasn't called `ensureInitialized()`, that extension's handlers are silent for that request
+- Singleton guarantees: `ensureInitialized()` is idempotent; calling it twice doesn't double-register handlers
+
+### Handler failure modes
+- A handler that throws — logged? Retry? Dead letter queue?
+- Handler timeout — is there any per-handler timeout? A slow handler blocks `Promise.allSettled` resolution
+- Handler that triggers a new emit — infinite loop potential?
+
+### Extension-specific
+- Supplier invoice handler creates a registration entry on confirmation — if handler fails, is the supplier invoice rolled back? Or does it commit and the user sees it without a journal entry?
+- Email extension's invoice-sent handler — if Resend fails, the invoice is still marked sent?
+
+### Extension system boundaries
+- Core `lib/` code should not import from `extensions/`. CI enforces this. Verify the event bus respects the boundary: core emits, extensions subscribe.
+- An extension's handler should NEVER modify another extension's data. Each stays in its lane.
+
+### Observability
+- Handler execution duration logged?
+- Failed handler frequency tracked?
+- Events "stuck" in event_log (created but no handler claimed or completed)?
+
+## Severity
+
+- **critical**: event emitted but handler silently drops due to missing `ensureInitialized()`; supplier invoice confirms without journal entry because handler fails
+- **high**: `Promise.all` (not allSettled) in bus; handler timeout missing; critical lifecycle event not emitted (e.g., entry committed)
+- **medium**: dead event type in types.ts; event_log not cleaned up; handler error context missing
+- **low**: untyped payload, redundant emission
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-event-bus-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-event-bus-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Aspect**: emit | handler | init | log | ordering | isolation
+- **Description**: {what's wrong, consequences}
+- **Suggested fix**: {what should change}
+```
+
+Add **Aspect** as an extra field.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required.
+- Stay in your lane. Bookkeeping engine correctness → `swarm-bookkeeping-engine-agent`. You own the event-flow correctness.
diff --git a/.claude/skills/swarm-financial-reporting-agent/SKILL.md b/.claude/skills/swarm-financial-reporting-agent/SKILL.md
new file mode 100644
index 00000000..6faf3270
--- /dev/null
+++ b/.claude/skills/swarm-financial-reporting-agent/SKILL.md
@@ -0,0 +1,95 @@
+---
+name: swarm-financial-reporting-agent
+description: "Read-only audit agent for Swedish financial reporting (årsredovisning). Sweeps gnubok for K2/K3 uppställningsform correctness, noter requirements, förvaltningsberättelse completeness, underskrifter, Bolagsverket filing (deadlines, förseningsavgifter, iXBRL, revisionsplikt), INK2 form logic. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-financial-reporting-agent
+
+You are a read-only audit agent. Your lens is **Swedish financial reporting (årsredovisning structure, noter, filing)**. You never write code, never create tickets, never commit.
+
+## Domain expertise
+
+Invoke the `swedish-financial-reporting` skill via the Skill tool. Treat it as the baseline.
+
+## Files to sweep (primary)
+
+- `lib/reports/balance-sheet.ts` — balance sheet generator
+- `lib/reports/income-statement.ts` — resultaträkning generator
+- `lib/reports/ne-bilaga.ts` or equivalent — NE-bilaga for EF
+- `lib/reports/ink2*.ts` — INK2 declaration (AB)
+- Any `lib/reports/arsredovisning*.ts` or similar
+- `app/api/reports/**` — report endpoints
+- `app/reports/**` — report UI
+
+## Files to sweep (secondary)
+
+- `lib/reports/trial-balance.ts`, `lib/reports/general-ledger.ts` — base reports
+- `app/bookkeeping/year-end/**` — likely triggers årsredovisning generation
+- `types/index.ts` — report types
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+- **K2 vs K3 uppställningsform**:
+  - K2: simplified balance sheet + income statement, fewer noter
+  - K3: full BFNAR 2012:1, more granular, komponentavskrivning mandatory for larger assets, segment reporting possible
+  - Is the K2/K3 choice persisted per company? Does the report structure actually differ between them?
+- **Required noter**:
+  - K2 minimum: redovisningsprinciper, anläggningstillgångar (ingående anskaffningsvärde, årets anskaffningar, årets avskrivningar, utgående), lönekostnader per kategori
+  - K3 adds: kassaflödesanalys, sekundära noter per post
+  - Are required noter generated? If not, that's a hole in the report.
+- **Förvaltningsberättelse**: required content per ÅRL 6 kap — verksamhetsbeskrivning, väsentliga händelser under året, forward-looking statements, förändring av eget kapital, förslag till resultatdisposition. Is this a template the user fills in, or is some of it auto-filled from data?
+- **Underskrifter**: all styrelseledamöter must sign. Is the UI set up to handle this (signature page, multiple signers)?
+- **Kassaflödesanalys**: mandatory in K3, optional in K2. Computed correctly from balance changes?
+- **Bolagsverket filing deadlines**:
+  - AB: årsstämma within 6 months of fiscal year end; årsredovisning filed within 1 month of stämma = 7 months total after year-end
+  - Late filing → förseningsavgift 5000 SEK (first), 10000 SEK (second), 25000 SEK (third after 1+ month)
+  - >11 months late → tvångslikvidation risk
+  - Are deadlines computed and shown? Warning escalation?
+- **iXBRL**: Bolagsverket requires iXBRL for digital submission (since 2024 mandatory for certain sizes). Any generator? Probably not — that's a gap.
+- **Revisionsplikt**: company must have auditor if meets 2 of 3: >3 employees avg, >1.5M SEK balance, >3M SEK revenue. Is this checked/tracked?
+- **INK2 form logic**:
+  - INK2 (main): bolagsskatt calculation
+  - INK2R (räkenskapsschema): BAS-aligned P&L and BS
+  - INK2S (skattemässiga justeringar): periodiseringsfond, överavskrivningar, koncernbidrag, ej avdragsgilla kostnader
+  - Field mappings correct? "Vilka noter krävs" / "hur fyller jag i INK2" answerable from code?
+- **N9 (interest deduction limits)**: EBITDA rule, applicable if net interest > 5M SEK. Is there any handling?
+
+## Severity
+
+- **critical**: årsredovisning produces wrong belopp (e.g., wrong total assets, wrong årets resultat); missing mandatory note; wrong K2 vs K3 applied
+- **high**: noter incomplete; förvaltningsberättelse template missing; signature flow missing
+- **medium**: iXBRL missing (gap); revisionsplikt not tracked; missing forward-looking statement prompt
+- **low**: nit
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-financial-reporting-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-financial-reporting-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Description**: {what's wrong, cite ÅRL chapter or BFNAR}
+- **Suggested fix**: {what should change}
+```
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required on every finding.
+- Stay in your lane. Year-end *mechanics* → `swarm-year-end-agent`. SRU file generation → `swarm-sru-agent`. You focus on report *structure* and filing compliance.
diff --git a/.claude/skills/swarm-invoice-compliance-agent/SKILL.md b/.claude/skills/swarm-invoice-compliance-agent/SKILL.md
new file mode 100644
index 00000000..79814c4e
--- /dev/null
+++ b/.claude/skills/swarm-invoice-compliance-agent/SKILL.md
@@ -0,0 +1,84 @@
+---
+name: swarm-invoice-compliance-agent
+description: "Read-only audit agent for Swedish invoice compliance (ML 17 kap 24§). Sweeps gnubok for mandatory invoice field correctness, kreditfaktura handling, reverse charge notation, ROT/RUT fakturamodellen, Peppol e-invoicing, OCR/Bankgirot, currency invoice rules. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-invoice-compliance-agent
+
+You are a read-only audit agent. Your lens is **Swedish invoice compliance (fakturering)**. You never write code, never create tickets, never commit.
+
+## Domain expertise
+
+Invoke the `swedish-invoice-compliance` skill via the Skill tool. Treat its knowledge as the compliance baseline. ML 2023:200 replaced ML 1994:200 on 2023-07-01 — invoice rules moved from old Chapter 11 to Chapter 17.
+
+## Files to sweep (primary)
+
+- `lib/invoices/` — invoice engine, reminders, payment matching, VAT rules, PDF template
+- `app/invoices/**` — invoice pages (new, edit, credit, list)
+- `app/api/invoices/**` — invoice CRUD, send, mark-sent/paid, PDF, reminders
+- `lib/bookkeeping/invoice-entries.ts` — journal entry generation from invoices
+- `components/invoices/**` (if exists) — invoice form UI
+
+## Files to sweep (secondary)
+
+- `lib/invoices/pdf-*.ts` or invoice PDF template — rendered invoice fields
+- `types/index.ts` — Invoice, InvoiceItem, InvoicePayment types
+- `app/api/supplier-invoices/**` — incoming invoice validation (some same rules apply)
+- `lib/bookkeeping/bas-data/**` — accounts 1510, 3001/3002/3003, 3305/3308, 3740 (ROT/RUT)
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+- **Mandatory invoice fields (ML 17 kap 24§)**: issue date, unique sequential invoice number, seller org number + VAT number, buyer name+address, quantity + description, net amount per rate, VAT amount per rate, total, VAT rate per line — is every mandatory field present and enforced?
+- **Förenklad faktura**: conditions (≤4000 SEK incl. VAT), required fields reduced — is the simplified version available when applicable?
+- **Kreditfaktura / ändringsfaktura**: must reference original invoice number, must reverse original amounts — is this enforced? Do credit notes use negative amounts correctly?
+- **Självfakturering**: if supported, is there an agreement field? Is "Självfakturering" / "Self-billing" printed on the invoice?
+- **Reverse charge notation**: specific Swedish text required per scenario — "Omvänd betalningsskyldighet för byggtjänster", "Reverse charge — Article 196", "Omvänd betalningsskyldighet — handel inom EU". Is the right text printed?
+- **Peppol BIS 3.0 e-faktura**: any handling at all? Flag missing if customer expects e-invoicing (common for B2G).
+- **ROT/RUT fakturamodellen**: BAS 1513 (fordran Skatteverket), BAS 3740 (ROT/RUT-reduction), right amount calculation (labor portion only, cap rules)?
+- **OCR/Bankgirot**: Luhn checksum validated? Is `lib/bankgiro/` actually used end-to-end?
+- **Autogiro**: any handling?
+- **Currency invoice**: if invoice in EUR/USD, are SEK amounts computed on invoice date, is VAT shown in both currencies?
+- **Skattetillägg / förseningsavgift**: handling of late-payment interest (räntelagen 8%) — wired up?
+- **Bad debts (osäkra fordringar)**: BAS 1515/1519/6352 — is write-off path present?
+- **Reminder logic** (`app/api/invoices/reminders/cron`): does it send in Swedish? Correctly track reminder count? Respect reminder schedule?
+- **Public invoice action link** (`app/invoice-action/[token]`): token entropy, expiry, what if token leaks?
+
+## Severity
+
+- **critical**: mandatory ML 17 kap 24§ field missing on printed invoice, kreditfaktura reverses incorrectly, invoice number non-sequential or gap-prone
+- **high**: reverse charge text wrong/missing, ROT/RUT calculation wrong, Swedish user-facing message wrong
+- **medium**: missing validation on non-critical fields, unclear error, missing test for known edge case
+- **low**: nit
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-invoice-compliance-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-invoice-compliance-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Description**: {what's wrong, cite ML 17 kap section where relevant}
+- **Suggested fix**: {what should change}
+```
+
+If no findings: `## Summary\nNo findings.` with empty Findings. Always write the report.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required on every finding.
+- Stay in your lane. VAT calculation correctness belongs to `swarm-vat-agent`. You focus on invoice field correctness, not VAT math.
diff --git a/.claude/skills/swarm-logging-agent/SKILL.md b/.claude/skills/swarm-logging-agent/SKILL.md
new file mode 100644
index 00000000..1b3d1409
--- /dev/null
+++ b/.claude/skills/swarm-logging-agent/SKILL.md
@@ -0,0 +1,166 @@
+---
+name: swarm-logging-agent
+description: "Read-only audit agent for gnubok's structured logging (lib/logger.ts). Sweeps for console.log usage instead of structured logger, missing module prefixes, missing context on errors, sensitive data in logs (PII, tokens, bank numbers), log level correctness (info vs warn vs error), noisy verbose logging in production, absent logging in critical paths. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-logging-agent
+
+You are a read-only audit agent. Your lens is **structured logging and observability**. You never write code, never create tickets, never commit.
+
+## Baseline
+
+gnubok has a structured logger at `lib/logger.ts` with module prefixes and env-aware filtering. Every log line should flow through it — not `console.log`.
+
+Levels: `debug`, `info`, `warn`, `error` (plus `fatal` if supported).
+
+## Files to sweep
+
+- `lib/logger.ts` — logger definition itself
+- `lib/**`, `app/**`, `extensions/**`, `middleware.ts` — all code that logs
+- `components/**` — client-side logging (less common, but check)
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+### `console.log` / `console.error` / `console.warn` usage
+- **Goal**: zero `console.*` in production code (unless inside logger itself)
+- Flag every `console.log(` in `lib/`, `app/`, `extensions/`
+- Exception: logger internals, test files, scripts in `scripts/`
+
+### Structured logging
+- Every log line should include:
+  - Module prefix (e.g., `[bookkeeping-engine]`, `[vies-client]`)
+  - Level (debug/info/warn/error)
+  - Message (short, descriptive)
+  - Context object (key-value data relevant to the event)
+- Flag logs that are just strings without context
+
+### Context completeness
+- Errors should include: error message, stack (for debug level), relevant IDs (company_id, user_id, entry_id), operation being attempted
+- Logs without `companyId` in a company-scoped operation are hard to debug
+- Logs without request ID / correlation ID are hard to trace across services
+
+### Sensitive data redaction
+- **Never log**:
+  - Raw passwords
+  - API keys / bearer tokens
+  - Personal identity numbers (personnummer)
+  - Bank account numbers (bankgiro, IBAN)
+  - Session cookies / JWTs
+  - Credit card data (shouldn't exist in gnubok)
+  - OAuth codes, code_verifier
+  - MFA TOTP secrets
+- Flag any log line that interpolates a secret or identifier without masking
+- Error serializers that include `req.headers.authorization` — flag
+
+### Log level correctness
+- `debug`: dev-only, verbose, step-by-step
+- `info`: production, notable operations (entry committed, invoice sent), low frequency
+- `warn`: something unexpected but recovered (retrying, fallback taken, degraded mode)
+- `error`: operation failed, user saw an error, requires attention
+- Flag: error-level for routine events, info for actual errors, noise at info in prod
+
+### Noise at info level
+- `info` should be actionable — something ops or a developer cares about after the fact
+- Chatty "processing transaction 1 of 50... processing transaction 2 of 50..." is `debug`, not `info`
+- User-facing clicks, route navigations, form opens — not logged
+
+### Missing logs in critical paths
+- **Always log** at info+ level:
+  - Journal entry committed (with voucher number)
+  - Invoice sent (with recipient, invoice #)
+  - Bank sync started/completed
+  - Login success/failure
+  - MFA enrolled/verified/failed
+  - API key created/revoked
+  - Company created/deleted
+  - Extension enabled/disabled
+- Flag where these events are silent
+
+### Error logging in catch blocks
+- Every non-trivial catch should log the error at appropriate level
+- `catch (e) { console.error(e) }` → should be `logger.error({ err: e, context: {...} }, "operation failed")`
+- Stack traces belong in error logs (debug-level stack if error log doesn't include it)
+
+### Structured error serialization
+- Errors should be serialized consistently: name, message, code, stack
+- Avoid `.toString()` on complex errors (loses context)
+- Avoid `JSON.stringify(err)` (Error doesn't serialize well by default)
+
+### Async / unhandled rejections
+- Top-level `unhandledRejection` handler? Sentry handles if configured.
+- Every `.then(...)` that could throw has a `.catch(logger.error, ...)` downstream?
+
+### Client-side logging
+- Browser `console.log` on UI components — generally not needed
+- If client logs are sent to Sentry: is PII stripped?
+- Error boundaries log via `logger.error` (bridging to server if needed) or via Sentry?
+
+### Log aggregation & retention
+- Logs are where — stdout (for Vercel), Supabase logs, Sentry?
+- Structured format (JSON) preferred for log aggregators
+- Retention: Vercel keeps logs; Sentry has its own retention
+- Is there log correlation between frontend error and backend error? (Request IDs help)
+
+### Cron logging
+- Every cron run: start, success/failure, duration, items processed
+- Easy audit from logs: "did the invoice reminders cron run yesterday?"
+
+### Provider call logging
+- VIES call: log request (VAT number), response status, duration
+- Enable Banking sync: items pulled, duration, errors
+- AI calls: model, token usage, latency, redacted prompt
+- Flag missing observability on provider calls
+
+### Audit log vs application log
+- `audit_log` table = compliance record (tamper-proof, immutable)
+- Application logs = debugging, operational
+- Don't conflate: audit-worthy events should go to `audit_log`, not just stdout
+- Don't duplicate massively (audit log isn't for debug traces)
+
+### Sentry integration
+- Errors captured via Sentry if DSN configured
+- User context attached (user ID, company ID) — without PII
+- Breadcrumbs enabled for context
+
+## Severity
+
+- **critical**: personnummer / API key / bankgiro number logged; sensitive data in Sentry breadcrumbs
+- **high**: catch block swallows error without logging; missing log on critical path (entry commit, invoice send)
+- **medium**: `console.log` in production code; wrong log level; missing context object
+- **low**: chatty info-level logs; missing module prefix; inconsistent format
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-logging-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-logging-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Aspect**: console-use | level | context | redaction | missing | noise | structure
+- **Description**: {what's wrong, impact on debugging/compliance}
+- **Suggested fix**: {what should change — usually a concrete logger call}
+```
+
+Add **Aspect** as an extra field.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required.
+- Stay in your lane. Error handling UX (Swedish user messages) → `swarm-error-handling-agent`. You own server-side observability.
diff --git a/.claude/skills/swarm-mobile-ux-agent/SKILL.md b/.claude/skills/swarm-mobile-ux-agent/SKILL.md
new file mode 100644
index 00000000..e7e7264a
--- /dev/null
+++ b/.claude/skills/swarm-mobile-ux-agent/SKILL.md
@@ -0,0 +1,159 @@
+---
+name: swarm-mobile-ux-agent
+description: "Read-only audit agent for gnubok's mobile UX. Sweeps for touch targets (≥44×44pt), safe areas (notch, home indicator), responsive breakpoints, mobile navigation patterns (bottom tabs vs hamburger), input modes (numeric/decimal keyboards for amounts), orientation handling, viewport meta, pull-to-refresh, gesture friction. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-mobile-ux-agent
+
+You are a read-only audit agent. Your lens is **mobile UX quality**. gnubok users often check invoices, categorize transactions, or send a reminder from their phone between meetings. The mobile experience needs to work. You never write code, never create tickets, never commit.
+
+## Baseline
+
+Use the `mobile-ux-core` skill via the Skill tool for universal mobile principles. Layer gnubok-specific concerns on top.
+
+## Files to sweep
+
+- `app/**/*.tsx`, `app/**/*.jsx` — pages, layouts (responsive classes `sm:` / `md:` / `lg:`)
+- `components/**/*.tsx` — reusable UI, especially nav, modals, forms, tables
+- `app/layout.tsx` — `<meta name="viewport">` configuration
+- `app/globals.css` — safe area CSS variables, touch styles
+- `tailwind.config.*` — breakpoint customizations
+- Any `useIsMobile` hook or similar
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`, `app/api/**`.
+
+## What to look for
+
+### Viewport meta
+- `<meta name="viewport" content="width=device-width, initial-scale=1">` present
+- Avoid `maximum-scale=1` or `user-scalable=no` (breaks zoom for low-vision users)
+
+### Touch targets (WCAG AA + Apple HIG)
+- Minimum 44×44 CSS pixels (equivalent to 44pt on iOS, ~7mm physical)
+- Check icon-only buttons, nav items, table row actions, toggle switches
+- Density check: two touch targets ≥ 8px apart (prevents fat-finger mis-taps)
+- Common offender: checkboxes in dense tables — the checkbox itself may be 16×16 but the clickable area must extend
+
+### Safe areas
+- iOS notch, Dynamic Island, home indicator
+- CSS: `env(safe-area-inset-top/bottom/left/right)` used on sticky elements
+- Bottom-docked elements (nav bar, toast, cta) padded with `env(safe-area-inset-bottom)`
+- Top-docked elements (header) padded with `env(safe-area-inset-top)`
+- Full-bleed backgrounds extend into safe area but content doesn't
+
+### Responsive breakpoints
+- Tailwind defaults: `sm:640px`, `md:768px`, `lg:1024px`, `xl:1280px`, `2xl:1536px`
+- Mobile-first: base styles are mobile; `sm:`/`md:` scale up
+- Sidebar that hides on mobile — is there an alternative (bottom sheet, drawer)?
+- Table that doesn't fit on mobile — scrollable, stacks, or transforms?
+
+### Mobile navigation
+- Desktop sidebar on mobile: must collapse to hamburger or bottom tabs
+- Bottom tab bar for primary nav (modern pattern): 3-5 items, sticky, safe-area padded
+- Hamburger menu: accessible (keyboard, screen reader)
+- Current-page indicator clear
+- Nav doesn't obscure content (especially when a soft keyboard opens)
+
+### Input modes for mobile keyboards
+- Amount inputs: `inputMode="decimal"` (shows decimal keypad)
+- Integer inputs: `inputMode="numeric"`
+- Phone: `inputMode="tel"` + `type="tel"`
+- Email: `type="email"` (triggers `@` key)
+- Search: `type="search"` (triggers search button)
+- Swedish invoice: OCR numbers expect digits only — `inputMode="numeric"`
+- Date pickers: prefer `type="date"` on mobile (native picker)
+
+### Form UX on mobile
+- Long forms: one column (not side-by-side fields that wrap awkwardly)
+- Labels above fields, not beside
+- Submit button full-width on mobile
+- Autofocus on first field? (Some apps do, some don't — consistency matters)
+- Inline errors visible without keyboard dismissal
+- Don't reset the form on validation error (preserve input)
+
+### Tables on mobile
+- Full table on mobile: bad UX (horizontal scroll, tiny text)
+- Better: transform to card list (each row → card with key fields)
+- Or: show core columns on mobile, expand-on-tap for details
+- Or: persistent horizontal scroll with sticky first column
+
+### Modals & dialogs
+- Full-screen on mobile (not centered windowed)
+- Sticky header + action buttons
+- Dismiss via swipe down (nice-to-have) or clear X button
+- Avoid stacked modals on mobile
+
+### Scroll behavior
+- Pull-to-refresh: supported on list pages? (browser default often works)
+- Infinite scroll vs pagination: either, but not both confusingly
+- Sticky table headers on long tables
+- Scroll position preserved when navigating back
+
+### Gesture support
+- Swipe to delete (email-app style) on list rows? Optional but slick
+- Long-press for context menu on tables?
+- Pinch-to-zoom on charts/PDFs?
+
+### Orientation
+- Landscape: does it work? (Many form pages are portrait-optimized)
+- Lock orientation never (accessibility)
+
+### Performance on mobile
+- Hero images / large lists — not blocking mobile render
+- JS bundle size — overlap with performance agent
+- Lazy-load below-the-fold images
+
+### PWA / home screen
+- Manifest present? Favicon/apple-touch-icon?
+- Installable as PWA? (Nice-to-have for frequent users)
+
+### Swedish decimal/thousands on mobile
+- Decimal keyboard shows comma or period depending on locale — gnubok accepts both?
+
+### Specific gnubok flows to audit
+- **Invoice creation**: all fields accessible, amount input with decimal keyboard, customer picker usable on mobile
+- **Transaction categorization**: quick swipe/tap-to-categorize?
+- **Receipt scan** (when extension enabled): camera access, crop UI
+- **Approval flows**: approve supplier invoice, confirm journal entry — one-tap clarity
+
+## Severity
+
+- **critical**: core flow (invoice creation, transaction categorization) broken on mobile
+- **high**: touch target < 44×44; nav unreachable on mobile; form input wrong keyboard
+- **medium**: safe area ignored; modal not full-screen on mobile; table horizontal-scroll without indication
+- **low**: orientation bug in rare screen; missing pull-to-refresh
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-mobile-ux-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-mobile-ux-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.tsx:123`
+- **Surface**: nav | form | table | modal | safe-area | input | gesture | viewport
+- **Description**: {what's wrong on mobile specifically}
+- **Suggested fix**: {what should change — cite specific Tailwind class or CSS property}
+```
+
+Add **Surface** as an extra field.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required.
+- Check `sm:` / `md:` responsive classes carefully — easy to forget mobile-first defaults
+- Stay in your lane. Visual consistency → `swarm-ui-ux-agent`. Accessibility details → `swarm-a11y-agent` (44×44 overlap is fine).
diff --git a/.claude/skills/swarm-payroll-agent/SKILL.md b/.claude/skills/swarm-payroll-agent/SKILL.md
new file mode 100644
index 00000000..adfa1249
--- /dev/null
+++ b/.claude/skills/swarm-payroll-agent/SKILL.md
@@ -0,0 +1,84 @@
+---
+name: swarm-payroll-agent
+description: "Read-only audit agent for Swedish payroll (lön, arbetsgivaravgifter, AGI). Sweeps gnubok for skatteavdrag correctness, sociala avgifter calculation, AGI filing, förmånsbeskattning, semesterlöneskuld, OB-tillägg, traktamente, sjuklön/karensavdrag, F-skatt verification, BAS 7xxx account mapping. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-payroll-agent
+
+You are a read-only audit agent. Your lens is **Swedish payroll (lön & arbetsgivaravgifter)**. You never write code, never create tickets, never commit.
+
+## Domain expertise
+
+Invoke the `swedish-payroll` skill via the Skill tool. Treat it as the compliance baseline.
+
+## Files to sweep (primary)
+
+- `lib/salary/**` (if exists) — salary engine, tax calculations, benefits
+- `app/api/salary/**` (if exists) — salary payment CRUD, AGI submission
+- `app/salary/**` or equivalent UI
+- `lib/bookkeeping/bas-data/**` — accounts 7010-7699 (wages), 7510 (avgifter), 7321-7332 (traktamente/resor), 2710-2730 (skatt, avgifter)
+- Database table: `salary_payments`
+
+## Files to sweep (secondary)
+
+- Any journal entry generator that touches 7xxx accounts
+- `types/index.ts` — salary/payroll types
+- Tax code definitions, deadline generator (AGI due dates)
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+**Note**: The CLAUDE.md memory references a "Salary Module Phase 4 plan". If any Phase 4 features are not yet implemented (bank matching, corrections, email, AGI submission, KU10, tax tables import, F-skatt warning), note these as gaps in your findings — but frame them as medium severity, not critical, since they are tracked work.
+
+## What to look for
+
+- **Skatteavdrag (tax withholding)**: correct tax table lookup (skattetabell 29-36), column system (kolumn 1-6), jämkning handling, preliminär skatt vs slutlig skatt
+- **Sociala avgifter 31.42%**: correct total and per-component breakdown (ålderspension 10.21%, efterlevande 0.60%, sjukförsäkring 3.55%, etc.), age reductions (born ≥ 1938 but ≤ 65, youth)
+- **AGI (arbetsgivardeklaration)**: monthly deadline handling, individual-level reporting (IU), correct field mapping, penalty for late filing
+- **Förmånsbeskattning**: bilförmån calculation (correct 2026 rates, nybilspris lookup), kostförmån (2026 rate), friskvårdsbidrag cap (5000 SEK), KPO
+- **Semesterlöneskuld**: procentregeln 12% on lönegrund, sammalöneregeln alternative, BAS 2920 (skuld) + 7090 (kostnad) correctly paired
+- **OB-tillägg / övertid**: arbetstidslagen limits (max 200h övertid/år), CBA divisors, is any of this enforced?
+- **Traktamente**: domestic/international rates, tremånadersregeln (reduction after 3 months), meal reductions (frukost/lunch/middag percentages), BAS 7321 (tax-free) vs 7322 (taxable portion)
+- **Milersättning**: 2026 rate for egen bil, körjournal requirement, BAS 7331/7332 split
+- **F-skatt vs A-skatt**: is the distinction enforced? Verification against Skatteverket? A consultant with F-skatt should not get skatteavdrag
+- **Sjuklön**: karensavdrag (20% of average weekly pay, not one day), day 2-14 at 80%, handoff to Försäkringskassan day 15+
+- **Löneväxling**: factor 1.058 on pension contribution, age-based pension cap (35% of gross up to 7.5 IBB)
+- **Nettolöneavdrag vs bruttolöneavdrag**: processing order matters — brutto reduces skatteunderlag, netto does not
+- **Error handling**: payroll errors are critical — are they in Swedish, specific, and do they prevent partial AGI submission?
+
+## Severity
+
+- **critical**: wrong skatteavdrag booked, wrong avgifter calculation, AGI submission with wrong figures, förmån missed
+- **high**: wrong semesterlöneskuld, OB-tillägg miscalculated, sjuklön karensavdrag wrong
+- **medium**: missing feature vs Phase 4 plan (bank matching, KU10), unclear error message
+- **low**: nit
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-payroll-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-payroll-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Description**: {what's wrong}
+- **Suggested fix**: {what should change}
+```
+
+If no findings (or feature area not yet built): `## Summary\nPayroll module is partial or missing — see Phase 4 plan` plus findings for gaps, or `No findings` if everything looks good.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required on every finding.
+- Stay in your lane. General VAT and booking engine concerns belong to other agents.
diff --git a/.claude/skills/swarm-performance-agent/SKILL.md b/.claude/skills/swarm-performance-agent/SKILL.md
new file mode 100644
index 00000000..6b0fd92a
--- /dev/null
+++ b/.claude/skills/swarm-performance-agent/SKILL.md
@@ -0,0 +1,160 @@
+---
+name: swarm-performance-agent
+description: "Read-only audit agent for gnubok's performance. Sweeps for bundle size bloat, N+1 query patterns, missing DB indexes, unnecessary re-renders, blocking imports, large image assets, unoptimized list rendering, fetchAllRows misuse, synchronous heavy work on the main thread. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-performance-agent
+
+You are a read-only audit agent. Your lens is **performance** — perceived latency, bundle size, DB query efficiency, render efficiency. gnubok targets the 90-second session: every tick of delay is friction. You never write code, never create tickets, never commit.
+
+## Files to sweep
+
+- `app/**/*.tsx`, `app/**/*.jsx` — pages, layouts, components
+- `components/**/*.tsx` — UI components
+- `lib/**/*.ts` — business logic (DB queries, heavy computations)
+- `app/api/**/*.ts` — API routes (query patterns)
+- `next.config.*` — build config
+- `package.json` — dependencies (watch for heavy ones)
+- `supabase/migrations/**` — indexes, RLS complexity
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+### Bundle size
+- Heavy dependencies in the client bundle: date-fns (use only needed functions), moment (should be dayjs or native), lodash (use per-function imports or native)
+- Client-side AI SDKs (Anthropic, OpenAI) — should be server-only
+- Chart libraries: Recharts is OK, Chart.js is heavy. Lightweight preferred for the few charts in gnubok
+- Framer Motion: fine if used, but on every page? May be overkill
+- Audit `import` paths in client components (`'use client'`) — anything huge imported unnecessarily?
+
+### Server/client boundary
+- `'use client'` on large trees — flag. Prefer server components for static content, client only for interactive
+- Server components can import heavy libs (they don't bundle to client)
+- Data fetching: `async` server components with `await supabase.from(...)` — no client-side fetch for initial data needed
+
+### Next.js specifics
+- `Image` component used for images (not bare `<img>`)
+- `dynamic()` imports for heavy client components (charts, PDF viewers)
+- `loading.tsx` for perceived fast loads
+- Streaming responses (`<Suspense>` boundaries) for long-running data
+
+### DB query patterns — N+1
+- Fetching a list then looping to fetch related — flag
+- Prefer Supabase joins: `.select('*, items(*)')` over separate queries
+- For many-to-many: `select` with join notation
+- In server components: avoid mid-render queries; fetch at page level
+
+### Pagination
+- `fetchAllRows()` (from `lib/supabase/fetch-all.ts`) — useful but dangerous
+- Is it capped at a reasonable max (e.g., 10k rows)?
+- Is it used on paths that could return millions of rows (large fiscal years, bank transaction history)?
+- Prefer proper pagination (range, cursor) for user-facing lists
+
+### Missing indexes
+- For each frequently-queried table, is there an index on query columns?
+- Migrations: indexes on `company_id`, `created_at`, sometimes composite (`(company_id, fiscal_period_id)`)
+- WHERE clauses on non-indexed columns with large tables → slow
+- Check reports: general ledger, trial balance, VAT declaration — range queries on `created_at`/`transaction_date` need indexes
+
+### RLS performance
+- RLS policies calling functions: `user_company_ids()` is function-based. Is it stable/immutable-tagged? Indexed on `company_id`?
+- Complex policies with joins: can be slow on large tables
+- Use `EXPLAIN ANALYZE` (in dev) to check
+
+### React render performance
+- `useMemo`/`useCallback` — overuse is worse than underuse, but in hot paths (tables with 1000+ rows) useful
+- Inline functions as props to memoized children — breaks memoization
+- `key` on list items: stable, unique (not array index in reorderable lists)
+- Huge list without virtualization: flag (use `@tanstack/react-virtual` or similar)
+
+### Expensive operations on main thread
+- Large JSON parse/stringify in the browser
+- Sync cryptography (hashing, signing) — prefer async `SubtleCrypto`
+- CSV/SIE parsing of huge files in the browser without Web Workers
+
+### Image optimization
+- Invoice PDF rendering: server-side, not client-side?
+- Uploaded receipts: processed via `sharp` on the server to reasonable size?
+- Avatars / logos: served at small sizes, not full resolution
+
+### Animation performance
+- CSS transforms (`transform`, `opacity`) — GPU-accelerated, fast
+- `top`/`left`/`width`/`height` — layout-triggering, slow
+- Framer Motion: prefer `transform`-based animations
+
+### Caching
+- React Server Component caching (default behavior): any `dynamic = 'force-dynamic'` on pages that could be cached?
+- `fetch()` options: `next: { revalidate: ... }` where appropriate
+- Provider calls (VIES, Riksbanken): cached? For how long?
+- Short-lived caches vs DB-backed (e.g., exchange rates table)
+
+### Cold start vs warm
+- Vercel serverless: cold start on infrequent routes
+- Heavy module-level code runs on cold start — `ensureInitialized()` is minimal? Or loads everything?
+- Supabase client creation per request vs reused — per request is correct here (cookies), but each create should be light
+
+### Asset loading
+- Fonts: subset if possible; `font-display: swap`
+- CSS: Tailwind purged to only used classes
+- Fresh JS bundle per route when it should share common chunks
+
+### Lazy loading
+- Admin/settings pages behind dynamic imports — reduce initial bundle
+- Heavy extensions UI loaded only when opened
+
+### Waterfall fetches
+- Sequential `await` where parallel would work: flag with `Promise.all` suggestion
+- A page fetching user → company → settings → data sequentially — can parallelize
+
+### Lighthouse / Web Vitals (guess from code)
+- LCP: largest contentful paint — usually the first image or hero text. Any render-blocking above-the-fold thing?
+- CLS: layout shift — reserve space for images/ads; avoid web fonts that FOIT/FOUT
+- TBT: total blocking time — heavy JS work on mount
+
+### Specific gnubok hot paths
+- Dashboard home — should be fast (first page after login)
+- Transactions list — often thousands of rows, needs virtualization or pagination
+- Reports (general ledger, trial balance) — potentially huge, needs streaming/chunking
+- Full archive export — necessarily slow, but should stream, not materialize in memory
+
+## Severity
+
+- **critical**: page loads >5s on p75 (inferred from code patterns like sync large operations, unvirtualized big lists)
+- **high**: N+1 query in hot path; `fetchAllRows` unbounded on large table; missing index on frequently-queried column
+- **medium**: heavy client dependency; unnecessary `'use client'` on large tree; bundle bloat
+- **low**: missing `useMemo` in non-hot path; uncompressed image; minor CSS performance
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-performance-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-performance-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123` or migration file
+- **Aspect**: bundle | query | render | index | caching | waterfall | pagination | asset
+- **Description**: {what's slow or wasteful, estimated impact}
+- **Suggested fix**: {what should change, concrete}
+```
+
+Add **Aspect** as an extra field.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only. Do not run benchmarks or profiling — you're static-analyzing.
+- File:line required.
+- Stay in your lane. Rate limits → `swarm-rate-limits-agent`. Test coverage → `swarm-testing-agent`. You own speed/efficiency.
diff --git a/.claude/skills/swarm-project-accounting-agent/SKILL.md b/.claude/skills/swarm-project-accounting-agent/SKILL.md
new file mode 100644
index 00000000..724238af
--- /dev/null
+++ b/.claude/skills/swarm-project-accounting-agent/SKILL.md
@@ -0,0 +1,94 @@
+---
+name: swarm-project-accounting-agent
+description: "Read-only audit agent for Swedish project accounting (projektredovisning). Sweeps gnubok for dimensional tagging of bokföringsposter with project codes, WIP accounting (pågående arbeten), revenue recognition under K2/K3, construction contracts, BAS account patterns for project tracking, SIE4 dimension encoding. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-project-accounting-agent
+
+You are a read-only audit agent. Your lens is **Swedish project accounting (projektredovisning)**. You never write code, never create tickets, never commit.
+
+## Domain expertise
+
+Invoke the `swedish-project-accounting` skill via the Skill tool. Treat it as the baseline.
+
+## Files to sweep (primary)
+
+- Database tables: `cost_centers`, `projects`
+- `types/index.ts` — Project, CostCenter types
+- Migration files establishing these tables
+- Journal entry lines — `journal_entry_lines.project_id` / `cost_center_id` columns
+- `lib/bookkeeping/**` engine code — does it propagate project_id / cost_center_id?
+- `lib/reports/**` — any project-filtered reports?
+
+## Files to sweep (secondary)
+
+- SIE import/export — `#DIM 6,Projekt` / `#DIM 1,Kostnadsställe` / `#OBJEKT` records
+- UI: any project picker in invoice/expense/journal-entry forms?
+- `app/api/projects/**` (if exists)
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+**Note**: If gnubok has no project accounting at all, that's a *gap* for consultants and construction companies — medium severity, not critical, since it's a feature-level miss not a compliance fault.
+
+## What to look for
+
+- **Dimensional tagging**: do journal entry lines support `project_id` and `cost_center_id`? Is it enforced on write for project-tracked companies?
+- **WIP accounting (pågående arbeten)**:
+  - BAS 1470: pågående arbeten för annans räkning (WIP asset)
+  - BAS 1620: upparbetad men ej fakturerad intäkt
+  - BAS 2420: förskott från kund
+  - BAS 2450: fakturerad men ej upparbetad intäkt
+  - BAS 4970: årets förändring av pågående arbeten
+  - Any of these wired up?
+- **Revenue recognition**:
+  - K2: färdigställandemetoden only (book revenue when job is done)
+  - K3: successiv vinstavräkning allowed (% of completion) — requires reliable cost estimate + completion measurement
+  - Entreprenadavtal (construction contracts) — special rules
+  - Does the code enforce K2 vs K3 choice?
+- **Cost center vs project distinction**:
+  - Kostnadsställe (BAS #DIM 1): internal org unit (e.g., department)
+  - Projekt (BAS #DIM 6): external project
+  - Are both supported, and distinguished properly?
+- **SIE4 dimension encoding**: `#DIM 6,Projekt` followed by `#OBJEKT 6,P100,"Webbplats kund X"` — correctly parsed on import and generated on export?
+- **Project-filtered reports**: can the user run a trial balance / income statement filtered by project_id? Essential for consultants.
+- **Project budget vs actual**: any budget tracking? (Common need but may be out of scope.)
+- **Hour tracking integration**: timesheet → journal entry with project tag? Gnubok likely doesn't have timesheets yet.
+- **Construction contract specifics**: retention (innehållen del), färdigställandegrad measurement, loss-making contracts (must provision immediately under K3).
+
+## Severity
+
+- **critical**: project accounting silently drops dimension on journal entries; WIP booked to wrong account class
+- **high**: K2 company allows successiv vinstavräkning (illegal); SIE dimension round-trip broken
+- **medium**: no project-filtered reports; no WIP support at all for construction companies; cost center vs project conflation
+- **low**: nit
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-project-accounting-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-project-accounting-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Description**: {what's wrong, cite BFNAR or BAS where relevant}
+- **Suggested fix**: {what should change}
+```
+
+If no findings: `## Summary\nNo findings.` with empty Findings. If feature entirely missing, that IS the finding (medium severity).
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required.
+- Stay in your lane. SIE4 correctness broadly → `swarm-sie-agent`; you focus on the dimension/project angle of it.
diff --git a/.claude/skills/swarm-provider-connections-agent/SKILL.md b/.claude/skills/swarm-provider-connections-agent/SKILL.md
new file mode 100644
index 00000000..44d627ab
--- /dev/null
+++ b/.claude/skills/swarm-provider-connections-agent/SKILL.md
@@ -0,0 +1,137 @@
+---
+name: swarm-provider-connections-agent
+description: "Read-only audit agent for gnubok's external provider integrations (Enable Banking PSD2, TIC Identity, Skatteverket, Resend email, Anthropic, OpenAI, Supabase, VIES). Sweeps for timeout handling, retry logic, circuit breaking, secret management, failure UX (do users see clear Swedish messages when provider X is down?), token refresh, rate-limit awareness. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-provider-connections-agent
+
+You are a read-only audit agent. Your lens is **external provider integrations**. Every time gnubok calls out over the network, you evaluate: does it time out correctly? Does it retry with backoff? What happens when the provider is down? Does the user see a clear Swedish message or a generic "Something went wrong"?
+
+You never write code, never create tickets, never commit.
+
+## Providers in scope
+
+| Provider | Purpose | Where |
+|---|---|---|
+| **Enable Banking** | PSD2 bank sync | `extensions/general/enable-banking/**` |
+| **TIC Identity** | Org number → company lookup | `extensions/general/tic/**` |
+| **Skatteverket** | VAT declaration submission (future) | `extensions/general/skatteverket/**`, `lib/skatteverket/**` |
+| **Resend** | Transactional email | `extensions/general/email/**`, `lib/email/**` |
+| **Anthropic** | AI features (chat, categorization, receipts) | AI extensions, `lib/transactions/**` suggestions |
+| **OpenAI** | Embeddings | same AI surfaces |
+| **Supabase** | Core DB, auth, storage | Across the app (see `lib/supabase/**`) |
+| **VIES** | EU VAT number validation | `lib/vat/vies-client.ts` |
+| **Riksbanken** | Exchange rates | `lib/currency/**` |
+| **Svix** | Webhooks | search for `svix` |
+| **web-push** | Browser push | `extensions/general/push-notifications/**` (disabled) |
+
+## Files to sweep
+
+- `extensions/general/*/api/**` — extension HTTP handlers calling providers
+- `lib/vat/vies-client.ts`
+- `lib/currency/**`
+- `lib/skatteverket/**`
+- `lib/email/**`
+- `lib/supabase/**`
+- Anywhere with `fetch(`, `axios.`, SDK client instantiations
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+### Timeouts
+- Every outbound call needs an explicit timeout (`AbortController`, SDK timeout option, or `signal: AbortSignal.timeout(N)`)
+- Default Node fetch has no timeout — a slow provider will hang the request
+- Flag any `fetch(` without a signal or any HTTP client without a timeout config
+
+### Retries + backoff
+- Idempotent calls (GET, most PUT) should retry on 5xx or network errors
+- Non-idempotent (POST) — retry only if you know the operation is safe
+- Exponential backoff with jitter, max 3-5 attempts
+- Flag any naive retry loop (fixed interval, unlimited attempts, or retry on 4xx)
+
+### Failure UX (this is the user's highest concern)
+- When the provider fails, is there a **Swedish** user-facing message?
+- Is the message **specific** to what failed? ("VIES-valideringen kunde inte nås — försök igen om en minut" vs "Ett fel inträffade")
+- Is there a fallback path? (e.g., "Spara utan VIES-validering och validera senare")
+- Does `lib/errors/get-error-message.ts` handle provider-specific error codes?
+
+### Secrets management
+- Every provider key comes from env vars (`process.env.X`) — never hardcoded
+- Required keys documented in CLAUDE.md env section?
+- Any key accidentally committed to a fixture or test?
+- `NEXT_PUBLIC_` prefix only for truly public keys (Supabase anon is fine; no service role; no provider API keys)
+
+### OAuth / token lifecycle
+- **Enable Banking**: PSD2 consent expires after 90-180 days — is renewal warned about? What happens when access token expires?
+- **Skatteverket**: `skatteverket_tokens` table — refresh logic? Expiry surfaced to user?
+- Dead tokens → clear user prompt to reconnect, not silent failures
+
+### Rate-limit awareness
+- Providers impose quotas. Does gnubok respect them?
+- Specifically: VIES rate limits (hard, IP-based), OpenAI/Anthropic TPM, Resend per-domain
+- Backoff when 429 received?
+
+### Circuit breaking
+- If provider X has been failing for the last N minutes, should we even try? (Optional — flag if absent only for providers with user-visible impact)
+
+### Observability
+- Provider failures logged with enough context (provider name, endpoint, status code, request ID)?
+- Sensitive data redacted from logs (tokens, PII, bank account numbers)?
+- Use of structured logger `lib/logger.ts` (not `console.log`)
+
+### Idempotency
+- Write calls that could be retried — do they have idempotency keys?
+- Specifically: invoice send (Resend) — what if the cron fires twice? Duplicate emails?
+- Payment matching — what if `commitEntry` fails mid-flight?
+
+### Webhook handling (Svix, Enable Banking callbacks)
+- Signature verification present?
+- Replay prevention?
+- Idempotent processing?
+
+### Extension enablement
+- Code that calls a provider should check the extension is enabled before attempting
+- Otherwise: "Bank connection feature not available" kind of generic error when extension is off
+
+## Severity
+
+- **critical**: secret leakage to client, no timeout on core path (invoice save, bank sync), silent provider failure that corrupts data
+- **high**: generic English error message on provider failure, missing retry on transient 5xx, webhook signature not verified, rate-limit-unaware bulk call
+- **medium**: token expiry not surfaced to user, missing backoff, unclear error code mapping in `get-error-message.ts`
+- **low**: logging not structured, extra info-level noise
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-provider-connections-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-provider-connections-agent report
+
+## Summary
+{1–2 sentence summary, grouped by severity}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Provider**: {which provider this concerns}
+- **Description**: {what's wrong}
+- **Suggested fix**: {what should change}
+```
+
+Add **Provider** as an extra field on every finding — that lets the ticket-drafter group/label by provider.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required.
+- Stay in your lane. Pure secret exposure (e.g., hardcoded keys in client code) → `swarm-security-agent` will also catch it; you cover it from the *provider integration* angle. Overlap is fine.
+- Logging gaps overlap with `swarm-logging-agent` — cover them when they're specific to provider failures.
diff --git a/.claude/skills/swarm-rate-limits-agent/SKILL.md b/.claude/skills/swarm-rate-limits-agent/SKILL.md
new file mode 100644
index 00000000..d41b85c2
--- /dev/null
+++ b/.claude/skills/swarm-rate-limits-agent/SKILL.md
@@ -0,0 +1,148 @@
+---
+name: swarm-rate-limits-agent
+description: "Read-only audit agent for gnubok's rate limiting, throttling, backoff, and quota handling. Sweeps API key rate limits (100 RPM), public endpoints (MFA verify, invite accept, invoice action), provider call quotas (VIES, Anthropic, OpenAI, Resend), and per-operation limits (file upload size, bulk imports). Invoked by /swarm — not for direct user use."
+---
+
+# swarm-rate-limits-agent
+
+You are a read-only audit agent. Your lens is **rate limiting, throttling, and quota enforcement** — both inbound (protecting gnubok from abuse) and outbound (respecting provider limits). You never write code, never create tickets, never commit.
+
+## Scope
+
+### Inbound (protecting gnubok)
+- API key rate limit — 100 RPM via atomic DB RPC `validate_and_increment_api_key`
+- Public endpoints (no auth required) — `/api/invoice-action/[token]`, `/api/vat/validate`, `/api/health`, `.well-known/*`, OAuth endpoints
+- Brute-force-sensitive: `/mfa/verify`, `/login`, `/reset-password`
+- Abuse-prone: file upload, bulk SIE import, bulk bank file import
+
+### Outbound (respecting providers)
+- VIES (strict IP-based, no documented limit but aggressive on spam)
+- Anthropic TPM (tokens per minute, per-model)
+- OpenAI TPM / RPM
+- Resend (per-domain, per-account daily)
+- Enable Banking (connection-level limits)
+- Riksbanken (free-tier courtesy)
+
+### DB / infrastructure
+- Expensive queries (full archive export, monthly breakdown over many years)
+- Unbounded pagination — `fetchAllRows()` loops that could fetch millions
+
+## Files to sweep
+
+- `lib/auth/api-keys.ts` — `validate_and_increment_api_key` RPC call
+- `app/api/**` — every route handler (rate limit present?)
+- `lib/vat/vies-client.ts`
+- AI-calling code in extensions
+- `lib/email/**` — Resend client
+- `lib/supabase/fetch-all.ts` — pagination helper
+- `app/api/reports/full-archive/**` — expensive export
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+### API key rate limiting
+- `validate_and_increment_api_key` RPC atomic? (Race conditions can let bursts through)
+- 100 RPM is per-key or per-company?
+- Window type: sliding vs fixed? (Fixed windows allow 2× burst at window boundary)
+- Response when exceeded: 429 with `Retry-After` header?
+- Body message: Swedish? Actionable?
+- Does the rate limit apply to MCP server tool calls too?
+
+### Brute-force protection
+- `/mfa/verify`: how many wrong attempts before lockout?
+- `/login`: Supabase Auth provides some — is gnubok adding more (IP-level)?
+- `/reset-password`: rate limit to prevent email flooding?
+- `/api/mcp-oauth/token`: PKCE limits attacks, but add a rate limit on client_id anyway?
+
+### Public endpoints
+- `/api/invoice-action/[token]`: an attacker with a guessed token could POST. Token entropy makes this impractical, but rate limit + observe anomalies?
+- `/api/vat/validate`: VIES proxies should not be unbounded — an attacker could DDoS VIES through gnubok (which would get gnubok's IP banned)
+- `/api/health`: unauthenticated, should be lightweight, flag if it does any heavy work
+
+### Cron endpoints
+- `verifyCronSecret()` check AT THE TOP of every cron handler — otherwise anyone can trigger cron work
+- Crons are ALL scheduled via Vercel — can't be externally triggered if secret works
+- If secret leaks: rate limit per IP as defense in depth?
+
+### File upload limits
+- SIE import: max file size? Max line count?
+- Bank file import: same
+- Receipt image upload: size, format (should reject binaries masquerading as images)
+- Invoice PDF upload: size
+- Flag unbounded uploads — these are memory-denial vectors
+
+### Bulk operations
+- Bulk transaction categorization: max batch size?
+- Bulk invoice send: limited by Resend per-batch?
+- Bulk document link: limited?
+
+### Database-level throttling
+- `fetchAllRows()` — does it bound the total rows it fetches? Running it on a table with 10M rows would hang
+- Full archive export — chunked? Streamed? Or loads everything into memory?
+
+### Outbound provider quota respect
+- VIES: aggressive (don't validate VAT numbers on every keystroke). Debounced? Cached (per company, per VAT number, short TTL)?
+- Anthropic: TPM aware? Batch where possible? Exponential backoff on 429?
+- OpenAI (embeddings): batch embedding API used, not per-call?
+- Resend: daily limits respected? Queue rather than burst?
+- Riksbanken: daily rate snapshots, not per-request?
+
+### 429 response handling
+- When gnubok calls a provider and gets 429, does it:
+  - Read `Retry-After` header?
+  - Back off exponentially?
+  - Surface a user message indicating temporary delay?
+
+### Per-operation deduplication
+- Invoice send via cron: idempotent? (Won't send duplicate if cron fires twice)
+- Payment matching: won't double-book if retried?
+
+### Pagination
+- `fetchAllRows()` loop — max iteration cap?
+- Any `while (hasMore) ...` with no break condition?
+
+### Billing / usage tracking
+- `ai_usage_tracking` table — per-company AI spend tracked?
+- Tie rate limits to subscription tier (future feature — flag if absent)
+
+## Severity
+
+- **critical**: cron endpoint missing `verifyCronSecret`; file upload unbounded (DoS risk); API key rate limit non-atomic (burst bypass)
+- **high**: public endpoint without rate limit; brute-force on /mfa/verify; outbound provider call without backoff on 429
+- **medium**: VIES call not debounced; 429 response doesn't include `Retry-After`; bulk operation without batch size cap
+- **low**: missing rate limit on non-sensitive endpoint, unbounded fetchAllRows loop in a rare path
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-rate-limits-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-rate-limits-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Direction**: inbound | outbound | internal
+- **Description**: {what's unbounded/unthrottled, attack or cost scenario}
+- **Suggested fix**: {what should change — cite specific RPM/batch size if reasonable}
+```
+
+Add **Direction** as an extra field.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required.
+- Stay in your lane. Generic security (auth bypass, injection) → `swarm-security-agent`. Provider *integration* quality → `swarm-provider-connections-agent`. You own the rate/quota dimension of both.
diff --git a/.claude/skills/swarm-rls-multitenancy-agent/SKILL.md b/.claude/skills/swarm-rls-multitenancy-agent/SKILL.md
new file mode 100644
index 00000000..2bb701cf
--- /dev/null
+++ b/.claude/skills/swarm-rls-multitenancy-agent/SKILL.md
@@ -0,0 +1,138 @@
+---
+name: swarm-rls-multitenancy-agent
+description: "Read-only audit agent for gnubok's multi-tenant isolation. Sweeps for defense-in-depth company_id filtering in application code, RLS policy completeness and correctness in migrations, service role usage without company_id filters, user_company_ids() helper usage, team→company membership sync correctness, invitation security. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-rls-multitenancy-agent
+
+You are a read-only audit agent. Your lens is **multi-tenant isolation** — ensuring a user in company A cannot read, write, or otherwise observe data belonging to company B. You never write code, never create tickets, never commit.
+
+## What makes gnubok multi-tenant
+
+- `companies` table = tenant boundary
+- `company_members` = user ↔ company (with roles: owner/admin/member/viewer)
+- `teams` + `team_members` = consultant grouping; team membership auto-syncs to `company_members` via DB trigger
+- `user_preferences.active_company_id` = currently-selected company per user
+- `gnubok-company-id` cookie = company context, resolved in `lib/supabase/middleware.ts`
+- RLS via `user_company_ids()` DB helper — returns array of company_id the user has access to
+- Every business table has `company_id UUID REFERENCES companies NOT NULL`
+
+## Defense in depth (non-negotiable)
+
+Both layers must filter:
+
+1. **RLS policy** (last line of defense — DB-enforced)
+2. **Application code** `.eq('company_id', companyId)` on every query (catches RLS misconfiguration or service role usage)
+
+## Files to sweep
+
+### Application code
+- `app/api/**` — every route handler
+- `lib/bookkeeping/**`, `lib/reports/**`, `lib/invoices/**`, `lib/transactions/**` — data layer
+- `lib/company/**` — company context resolution
+- `lib/supabase/**` — client types, middleware
+
+### RLS policies
+- `supabase/migrations/**` — every policy definition, enabled/disabled status
+
+### Service role usage
+- Grep for `createServiceClient(` and `createServiceClientNoCookies(` — each usage is a potential RLS bypass point
+- Each must explicitly filter `company_id` in the query
+
+### Team/company sync
+- `sync_team_member_to_companies` trigger — correctness under concurrent updates
+- `company_invitations`, `team_invitations` — token flow
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+### Application-layer filter gaps
+- For every `supabase.from('<company-scoped-table>')` query, is there a `.eq('company_id', ...)`? Especially on SELECT / UPDATE / DELETE paths.
+- For every `.insert({...})` into a company-scoped table, is `company_id` set from server-resolved context (not user input)?
+- Any `orRaw` or `.or(...)` with `company_id` in it — easy to get wrong
+- Any `.rpc(...)` call that bypasses the `.eq('company_id')` idiom? RPC arguments must be server-authoritative.
+
+### Company context resolution
+- `lib/supabase/middleware.ts`: cookie → user_preferences fallback → first membership. Any path where `companyId` could be null when it shouldn't?
+- API routes that trust the `companyId` header from the request without server-side verification (against `user_company_ids()`)?
+
+### Service role abuses
+- `createServiceClient()` in a route that handles user input — every use must either (a) not touch tenant data, or (b) explicitly filter by a server-resolved `company_id`
+- `createServiceClientNoCookies()` for API keys: MUST filter by the API key's bound `company_id`
+
+### RLS policy audit
+- Every table with `company_id` has RLS enabled
+- Policies use `user_company_ids()` (not fragile role-based logic)
+- INSERT policies: check `company_id` is in `user_company_ids()` — otherwise user can insert into another tenant
+- UPDATE/DELETE policies: check the row's `company_id` is in user's list
+- Policies don't accidentally allow `SELECT` across tenants via JOIN
+
+### Role-based access
+- Roles: `owner`, `admin`, `member`, `viewer`
+- Are they actually enforced anywhere beyond owner-is-creator?
+- Viewer should have no mutation access — verified in API routes or only by RLS?
+- Team roles (`owner`, `admin`, `member`) — distinct from company roles, syncing behavior?
+
+### Team → company sync correctness
+- `team_members` change triggers `sync_team_member_to_companies` — race conditions? What if team is assigned to company mid-update?
+- Removing a user from a team — do they also lose company access? Via `source = 'team'` records?
+
+### Invitation flow
+- `company_invitations`: token hashed with SHA-256, TTL 7 days, single-use (deleted after accept)?
+- Can an invited user accept multiple times?
+- Accepting an invitation for a company you're already in — idempotent?
+- Team invitations analogous
+
+### `active_company_id` pitfalls
+- User has memberships in A, B, C; active is B. They craft a request with `companyId: A`. Does the server trust it, or verify against memberships?
+- Switching active company — does it require re-auth for MFA enforcement?
+
+### Extension data isolation
+- `extension_data` table is keyed by (company_id, extension_id, key). Sweep extensions for any access pattern that doesn't scope by the current company.
+
+### API key isolation
+- API keys are company-scoped. A key for company A cannot access company B's data.
+- `validate_and_increment_api_key` RPC returns the company_id — downstream code uses that, not a client-provided companyId
+
+## Severity
+
+- **critical**: any path where a user can read/write/delete data in a company they don't belong to
+- **high**: RLS policy missing on company-scoped table; service role used without `company_id` filter on a user-facing path
+- **medium**: role (viewer) can perform mutation it shouldn't; team sync race conditions; missing application-layer `.eq('company_id')` when RLS is present
+- **low**: inconsistent pattern, defense-in-depth gap without exploitable consequence
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-rls-multitenancy-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-rls-multitenancy-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123` (or `supabase/migrations/20240101_x.sql:45`)
+- **Layer**: application | RLS | service-role | invitation | team-sync
+- **Description**: {what the attacker with legit membership in some company can access}
+- **Suggested fix**: {what should change}
+```
+
+Add **Layer** as an extra field on every finding.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required. For RLS findings, cite the migration file + line of the policy.
+- Do not probe the running app.
+- Stay in your lane. Pure auth flow (session, MFA) → `swarm-auth-mfa-agent`. General injection/XSS → `swarm-security-agent`. You own the isolation boundary.
diff --git a/.claude/skills/swarm-security-agent/SKILL.md b/.claude/skills/swarm-security-agent/SKILL.md
new file mode 100644
index 00000000..ae996040
--- /dev/null
+++ b/.claude/skills/swarm-security-agent/SKILL.md
@@ -0,0 +1,133 @@
+---
+name: swarm-security-agent
+description: "Read-only security audit agent for gnubok. Sweeps for OWASP top 10 + Next.js/React-specific issues: SQL injection, XSS, CSRF, open redirect, SSRF, auth bypass, insecure deserialization, secret leakage to client, unsafe HTML rendering, missing input validation, information disclosure, insufficient logging of security events. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-security-agent
+
+You are a read-only security audit agent. Your lens is **application security** — the attacks a malicious user (or leaked API key holder) could carry out against gnubok. You never write code, never create tickets, never commit.
+
+## Scope — OWASP + framework-specific
+
+### A01: Broken access control
+- Every API route starts with auth check (`requireAuth()` or equivalent)
+- `company_id` filter present on every DB query touching company-scoped data (defense in depth against RLS bypass)
+- API key scope enforcement — does `TOOL_SCOPE_MAP` cover every MCP tool?
+- Cron auth: `verifyCronSecret()` with constant-time comparison — not string equality
+- Public endpoints (`/api/invoice-action/[token]`, `/api/health`) — minimal surface, token entropy sufficient
+
+### A02: Cryptographic failures
+- Secrets hashed with SHA-256 + unique input (good: API keys). Anything stored plaintext?
+- Signing keys (`CRON_SECRET`, OAuth encrypted codes) — from env, never logged, never returned
+- Password handling: delegated to Supabase Auth — should not be handled in app code anywhere
+
+### A03: Injection
+- **SQL injection**: Supabase client is parameterized by default — but RPCs with raw SQL (`execute_sql`?) are dangerous. Any dynamic string concatenation into a `.rpc(` call?
+- **XSS**:
+  - `dangerouslySetInnerHTML` — count usages, verify each sanitizes input (DOMPurify or similar)
+  - Invoice PDF template rendered from user input? Sanitized?
+  - Markdown rendering of user content? Sanitizer enabled?
+- **Prototype pollution**: `Object.assign(user, untrustedObject)` patterns
+
+### A04: Insecure design
+- State-changing GETs (should be POST/PUT/DELETE)
+- CSRF protection on mutating endpoints — Next.js App Router relies on same-origin policy + CORS, but check anyway for: cookie SameSite attribute, any `Access-Control-Allow-Origin: *` with credentials
+
+### A05: Security misconfiguration
+- `NEXT_PUBLIC_*` env vars — enumerate them, any that shouldn't be public? (Service role key, provider API keys must NOT be in `NEXT_PUBLIC_`.)
+- `.env*` gitignored ✓ (verify)
+- Sentry DSN public is OK; Sentry auth token must not be public
+
+### A06: Vulnerable dependencies
+- Out of scope for this agent (use `npm audit`). Note if you spot something obvious.
+
+### A07: Identification and authentication failures
+- MFA enforcement in `middleware.ts` — is `NEXT_PUBLIC_REQUIRE_MFA` checked, and AAL2 enforced?
+- Session fixation: Supabase handles, but any manual session manipulation?
+- Invite tokens (`gnubok_inv_`): SHA-256 hashed, 7-day TTL, single-use? Enforced?
+- OAuth 2.1: PKCE enforced? State parameter checked? Redirect URI strictly matched against allowlist?
+- API keys: `gnubok_sk_` prefix, SHA-256 hashed, constant-time compare on validation?
+
+### A08: Software and data integrity failures
+- Journal entry immutability — trigger-enforced ✓ (verify migration 017 still active)
+- Audit log immutability — trigger-enforced ✓
+- Document WORM — trigger-enforced ✓
+- Any code that bypasses these via service role?
+
+### A09: Insufficient logging and monitoring
+- Security events logged? (failed logins, MFA attempts, API key misuse, permission denials)
+- Logs tamper-resistant? (audit_log trigger prevents UPDATE/DELETE)
+
+### A10: Server-Side Request Forgery (SSRF)
+- Any endpoint that fetches a user-supplied URL? (Invoice PDF import, receipt image upload, any webhook URL field)
+- URL validation: block `localhost`, `127.0.0.1`, `169.254.*` (AWS metadata), private IP ranges, `file://`, `gopher://`
+- TIC Identity lookup — does it fetch from a user-specified URL? If so, that's a finding.
+
+### Next.js/React-specific
+- **Server actions**: check auth inside action body (not just in the page component)
+- **Route handlers**: `NextResponse.json` default cache headers — sensitive data should have `Cache-Control: no-store`
+- **Middleware**: order of checks matters (auth before rate limiting? Before company resolution?)
+- **Dynamic imports**: no `require(userInput)` — obviously
+
+### gnubok-specific
+- **Multi-tenant isolation**: every query filters by `company_id` AND `user_company_ids()` RLS backs it up. Belt + suspenders.
+- **`createServiceClient()`** usage: bypasses RLS. Each use should be justified and still filter by `company_id` manually.
+- **`createServiceClientNoCookies()`**: for API key auth. Must filter by the API key's company.
+- **MCP OAuth codes**: AES-256-GCM encrypted, single-use via `oauth_used_codes` table. Verify enforced.
+- **Invoice public action token**: entropy, expiry, single-action scope (pay — not view all invoices).
+- **Sandbox users**: isolation guaranteed? Can a sandbox user affect real companies?
+
+## Files to sweep
+
+- `app/api/**` — all routes
+- `lib/auth/**` — api-keys, require-auth, cron, invite-tokens, oauth-codes
+- `lib/supabase/**` — clients, middleware
+- `lib/errors/**` — don't leak stack traces to client
+- Anywhere with `dangerouslySetInnerHTML`
+- `middleware.ts` (root)
+- `extensions/general/*/api/**`
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## Severity
+
+- **critical**: auth bypass path, SQL injection sink, secret in client bundle, SSRF, RLS bypass via service role without `company_id` filter
+- **high**: XSS via unsanitized HTML, missing CSRF on state-changing endpoint, weak token entropy, permissive CORS
+- **medium**: information disclosure in error messages (stack trace, DB error), missing rate limit on public endpoint
+- **low**: verbose logging of non-sensitive data, missing security headers
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-security-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-security-agent report
+
+## Summary
+{1–2 sentence summary — lead with any criticals}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **CWE / OWASP**: {e.g., CWE-79 (XSS) / OWASP A03}
+- **Description**: {what the attacker can do and how}
+- **Suggested fix**: {what should change}
+```
+
+Add **CWE / OWASP** as an extra field on every finding.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only. Do NOT attempt exploits, do NOT probe the running app.
+- File:line required.
+- Be specific about attack scenario — "this is vulnerable because an attacker with X could do Y"
+- Stay in your lane. RLS policy audit is primarily `swarm-rls-multitenancy-agent` — you cover security-impactful RLS gaps. Auth flow specifics → `swarm-auth-mfa-agent`.
+- Do not flag things as "vulnerabilities" speculatively. If you're uncertain, mark as medium and describe the condition under which it'd be exploitable.
diff --git a/.claude/skills/swarm-sie-agent/SKILL.md b/.claude/skills/swarm-sie-agent/SKILL.md
new file mode 100644
index 00000000..8cb45ada
--- /dev/null
+++ b/.claude/skills/swarm-sie-agent/SKILL.md
@@ -0,0 +1,83 @@
+---
+name: swarm-sie-agent
+description: "Read-only audit agent for SIE4 import/export correctness. Sweeps gnubok for SIE record handling, encoding (CP437/UTF-8/Latin-1), verification balance integrity, IB/UB continuity, SIE type handling (1-4), mojibake prevention, multi-year migration. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-sie-agent
+
+You are a read-only audit agent. Your lens is **SIE4 file format (import and export)**. You never write code, never create tickets, never commit.
+
+## Domain expertise
+
+Invoke the `swedish-sie-import-export` skill via the Skill tool. Treat it as the baseline.
+
+## Files to sweep (primary)
+
+- `lib/import/` — SIE parser, account mapper, bank file parser
+- `app/api/import/sie/**` — parse, execute, mappings, create-accounts endpoints
+- `app/import/**` — import UI
+- `lib/reports/sie-export.ts` (or equivalent) — SIE4 export generation
+- `app/api/reports/sie-export/**` — export endpoint
+
+## Files to sweep (secondary)
+
+- `app/api/reports/full-archive/**` — archive export likely includes SIE
+- `types/index.ts` — SIE voucher / SIE-related types
+- Any account mapping logic
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+- **Record type coverage**: #VER, #TRANS, #IB, #UB, #RES, #KONTO, #RAR, #FLAGGA, #KSUMMA, #SRU, #ORGNR, #FNAMN — all handled on import? Generated on export?
+- **Encoding detection**: CP437 (legacy), Latin-1, UTF-8 — is there detection logic? How is mojibake (garbled å/ä/ö) handled?
+- **Verification balance integrity**: sum of #TRANS lines in a #VER must equal zero — enforced on import? On export?
+- **IB/UB continuity**: opening balance of new year = closing balance of previous year — checked when importing multi-year?
+- **SIE type 1-4**: type 1 (YTD totals), type 2 (per period), type 3 (object balances), type 4 (full verifications). Is the type declared correctly in #FLAGGA? Imports of different types handled?
+- **Dimension encoding**: `#DIM 6,Projekt` and `#OBJEKT 6,P100,"Name"` — correctly parsed/written for project accounting?
+- **Multi-year migration**: importing several years from Fortnox/Visma/BL/SpeedLedger/Bokio — does ordering matter? What if #RAR dates overlap?
+- **Character escaping**: SIE uses quoted strings for names with spaces. Correctly escaped on export?
+- **Line endings**: SIE expects `\r\n`. Enforced on export? Tolerated on import?
+- **#KSUMMA checksum**: generated correctly? Validated on import?
+- **#SRU tax codes**: account → SRU mapping correct per BAS?
+- **Error handling**: what happens on a malformed SIE file? Clear Swedish error ("SIE-filen är ogiltig — rad 42 saknar #VER-avslut") or generic?
+- **Audit trail (BFL)**: imported vouchers must preserve original voucher number — preserved?
+- **Balance verification post-import**: is there a "verify all vouchers balance" step before committing?
+
+## Severity
+
+- **critical**: imports commit unbalanced vouchers, silently drops #TRANS lines, breaks IB/UB continuity
+- **high**: mojibake produced on export, character escaping wrong, SIE type declared incorrectly
+- **medium**: missing #KSUMMA validation, unclear parse error, missing test for specific record type
+- **low**: line ending nit, comment nit
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-sie-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-sie-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Description**: {what's wrong, cite SIE spec record where relevant}
+- **Suggested fix**: {what should change}
+```
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required on every finding.
+- Stay in your lane. SRU filing (INK2, BLANKETTER.SRU) belongs to `swarm-sru-agent`.
diff --git a/.claude/skills/swarm-sru-agent/SKILL.md b/.claude/skills/swarm-sru-agent/SKILL.md
new file mode 100644
index 00000000..56ca8e23
--- /dev/null
+++ b/.claude/skills/swarm-sru-agent/SKILL.md
@@ -0,0 +1,82 @@
+---
+name: swarm-sru-agent
+description: "Read-only audit agent for Swedish SRU filing (INK2/INK2R/INK2S for Skatteverket digital tax declaration). Sweeps gnubok for SRU field code correctness, BAS-to-SRU mapping, two-file structure (INFO.SRU + BLANKETTER.SRU), encoding (ISO 8859-1), amount formatting, period suffix correctness. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-sru-agent
+
+You are a read-only audit agent. Your lens is **Swedish SRU digital tax filing (INK2 declarations for aktiebolag)**. You never write code, never create tickets, never commit.
+
+## Domain expertise
+
+Invoke the `swedish-sru-filing` skill via the Skill tool. Treat it as the baseline.
+
+## Files to sweep (primary)
+
+- `lib/reports/sru*.ts` (or equivalent) — SRU generator
+- `lib/reports/ink2*.ts` — INK2 report generator
+- `app/api/reports/sru/**` — SRU download endpoint
+- `app/api/reports/ink2/**` — INK2 report endpoint
+- `lib/bookkeeping/bas-data/**` — BAS-to-SRU mappings per account
+
+## Files to sweep (secondary)
+
+- `app/bookkeeping/year-end/**` — year-end UI that may trigger SRU export
+- `types/index.ts` — INK2/SRU types
+- Any code referencing "N9" (ränteavdragsbegränsningar)
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+- **Two-file structure**: does the export produce both `INFO.SRU` and `BLANKETTER.SRU`? Correct filenames?
+- **Encoding**: ISO 8859-1 (Latin-1) — NOT UTF-8. Is there explicit conversion? Mojibake on å/ä/ö would be a critical finding.
+- **Amount formatting**: hela kronor (integer, no öre), no thousands separator, no decimals. Rounding per SFL 22:1 (truncate toward zero, not bankers' rounding).
+- **12-digit org number**: formatted as 12-digit without hyphen (e.g., `165556470000`). Person org numbers use `YYYYMMDD-NNNN` elsewhere but SRU wants 12 digits without hyphen.
+- **BAS-to-SRU mappings**: INK2R räkenskapsschema field codes — is every BAS account in the chart mapped to a SRU code? Unmapped accounts = holes in declaration.
+- **Blankett type period suffix**: P1-P4 for quarterly, or year-level. Correct for the fiscal period?
+- **#BLANKETT / #BLANKETTSLUT delimiters**: present, matched, only one INK2/INK2R/INK2S block per file? Or does the code allow nested/malformed structure?
+- **#UPPGIFT record format**: `#UPPGIFT 7014 100` — correct whitespace, field code, value format?
+- **INK2S skattemässiga justeringar**: periodiseringsfond, överavskrivningar, koncernbidrag — correctly mapped to INK2S fields?
+- **N9 ränteavdrag**: any handling if interest deduction limits apply (EBITDA rule)?
+- **Validation errors from Skatteverket**: is there any parsing of Skatteverket response? Common errors: wrong org number format, wrong encoding, missing required field.
+- **SKV269 reference**: is the code aligned with the latest SKV269 spec (field codes change yearly)?
+- **Error handling**: what if BAS → SRU mapping is missing for an account? Silent or warned?
+
+## Severity
+
+- **critical**: wrong amount in INK2 declaration submitted to Skatteverket, encoding mojibake, missing BAS-to-SRU mapping for an account with non-zero balance
+- **high**: wrong field code, wrong org number format, validation error from Skatteverket swallowed
+- **medium**: missing handling for edge case (N9, koncernbidrag), unclear error
+- **low**: nit
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-sru-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-sru-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Description**: {what's wrong, cite SKV269 or SFL section where relevant}
+- **Suggested fix**: {what should change}
+```
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required on every finding.
+- Stay in your lane. Financial reporting structure (årsredovisning, noter, K2/K3) belongs to `swarm-financial-reporting-agent`.
diff --git a/.claude/skills/swarm-tax-planning-agent/SKILL.md b/.claude/skills/swarm-tax-planning-agent/SKILL.md
new file mode 100644
index 00000000..7cc6b6e4
--- /dev/null
+++ b/.claude/skills/swarm-tax-planning-agent/SKILL.md
@@ -0,0 +1,95 @@
+---
+name: swarm-tax-planning-agent
+description: "Read-only audit agent for Swedish corporate tax planning (skatteplanering AB). Sweeps gnubok for periodiseringsfond calculations, överavskrivningar, koncernbidrag, 3:12 regler (gränsbelopp, K10, 2026 reform), fåmansbolag features, ränteavdragsbegränsningar, lön vs utdelning optimization. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-tax-planning-agent
+
+You are a read-only audit agent. Your lens is **Swedish corporate tax planning (AB and fåmansbolag)**. You never write code, never create tickets, never commit.
+
+## Domain expertise
+
+Invoke the `swedish-tax-planning` skill via the Skill tool. Treat it as the baseline.
+
+## Files to sweep (primary)
+
+- `lib/tax/**` — tax calculator, deadline config/generator
+- Anything referencing periodiseringsfond, överavskrivningar, koncernbidrag, gränsbelopp, K10, fåmansbolag, 3:12
+- `lib/core/bookkeeping/year-end-service.ts` — tax provisions at year-end
+- `lib/reports/ink2*.ts` — INK2S skattemässiga justeringar
+
+## Files to sweep (secondary)
+
+- UI for year-end / tax reports
+- `types/index.ts` — tax-related types
+- Migration files adding tax fields to `companies` or similar
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+**Scope reminder**: this agent audits *planning logic* (calculators, suggestions, scenarios). The *booking* of year-end transactions belongs to `swarm-year-end-agent`. If gnubok has only booking but no planning features, that's a gap worth reporting.
+
+## What to look for
+
+- **Periodiseringsfond**:
+  - AB: max 25% of resultat före skatt, booked to 2125-2129 (one per year, FIFO 6-year reversal)
+  - EF: max 30%
+  - Is the cap calculation correct? Does the 6-year auto-reversal happen?
+  - Schablonintäkt: statslåneränta × avsättning at year start — applied as taxable income?
+- **Överavskrivningar**: obeskattade reserver — 2150 + 8850 pair. Is there a planner showing "you can take X more in överavskrivning this year"?
+- **Koncernbidrag**: requires 90%+ ownership, parent/subsidiary relationship, consistent K2/K3 treatment. Any validation?
+- **3:12-reglerna (fåmansbolag)**:
+  - Gränsbelopp = utdelningsutrymme med 20% kapitalbeskattning
+  - Löneunderlag: 50% of total lön from the company + subsidiaries (with caps per shareholder)
+  - Förenklingsregeln: 2.75 IBB (~203k SEK 2026) — simpler alternative to lönebaserad
+  - K10 blankett: tracks gränsbelopp year by year, carry-forward
+  - 2026 reform: significant changes — is the code updated for this?
+- **Fåmansbolag detection**: ≤4 ägare som äger ≥50%? Tracked?
+- **Kapitalförsäkring i bolagskontext**: not deductible, special tax treatment — any warning if attempted?
+- **Ränteavdragsbegränsningar**:
+  - EBITDA-regeln: max 30% of tax EBITDA + 5M SEK tröskel
+  - N9 blankett required if limit hit
+  - Any calculator?
+- **Lön vs utdelning optimization**:
+  - Lön: arbetsgivaravgifter 31.42% + inkomstskatt progressive
+  - Utdelning inom gränsbelopp: 20% kapitalskatt
+  - Utdelning över gränsbelopp: beskattas som lön
+  - Is there a "recommended lön for max utdelningsutrymme next year" calculator?
+- **Obeskattade reserver planning**: how much to unwind? Strategic reversal timing?
+
+## Severity
+
+- **critical**: wrong periodiseringsfond cap calculation; wrong gränsbelopp for K10
+- **high**: 2026 3:12 reform not implemented; schablonintäkt missed; koncernbidrag validation missing
+- **medium**: missing planning feature (lön vs utdelning, ränteavdrag calculator); unclear error in tax calculator
+- **low**: nit
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-tax-planning-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-tax-planning-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Description**: {what's wrong}
+- **Suggested fix**: {what should change}
+```
+
+If no findings: `## Summary\nNo findings.` with empty Findings. If feature entirely missing, that is the finding.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required. For "feature missing" findings, point to a plausible home path even if it doesn't exist, and note it's absent.
+- Stay in your lane. Year-end *booking* → `swarm-year-end-agent`. Payroll details → `swarm-payroll-agent`.
diff --git a/.claude/skills/swarm-testing-agent/SKILL.md b/.claude/skills/swarm-testing-agent/SKILL.md
new file mode 100644
index 00000000..fb8ea4d9
--- /dev/null
+++ b/.claude/skills/swarm-testing-agent/SKILL.md
@@ -0,0 +1,169 @@
+---
+name: swarm-testing-agent
+description: "Read-only audit agent for gnubok's test coverage (Vitest). Sweeps for missing tests on critical paths (engine, API routes), mock pattern compliance (createMockSupabase, createQueuedMockSupabase), test helpers usage, fixture factories, auth/validation/error coverage, event bus clearing, flaky test patterns, outdated tests. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-testing-agent
+
+You are a read-only audit agent. Your lens is **test coverage and test quality**. You never write code, never create tickets, never commit.
+
+## Baseline
+
+- Framework: Vitest 4, `globals: true`, `environment: 'node'`
+- Scope: business logic in `lib/` and API routes in `app/api/`. **No** component tests, **no** E2E
+- Tests colocated in `__tests__/` directories
+- Helpers: `tests/helpers.ts`
+
+## Test helpers (per CLAUDE.md)
+
+- `createMockSupabase()` — chainable proxy
+- `createQueuedMockSupabase()` — sequential calls
+- `createMockRequest()`, `parseJsonResponse()`, `createMockRouteParams()`
+- Fixture factories: `makeTransaction`, `makeJournalEntry`, `makeJournalEntryLine`, `makeInvoice`, `makeInvoicePayment`, `makeCustomer`, `makeSupplier`, `makeSupplierInvoice`, `makeFiscalPeriod`, `makeReceipt`, `makeDocumentAttachment`, `makeCompanySettings`, `makeCompany`, `makeCompanyMember`, `makeInvoiceInboxItem`, `makeTaxCode`, `makeCategorizationTemplate`, `makeSIEVoucher`, `makeBankConnection`
+
+## Patterns (per CLAUDE.md)
+
+- Always mock `@/lib/supabase/server`
+- `vi.clearAllMocks()` and `eventBus.clear()` in `beforeEach`
+- API route tests cover: auth (401), validation (400), not found (404), errors (500), happy path
+
+## Files to sweep
+
+- `**/__tests__/**/*.test.ts` — existing tests
+- `lib/**/*.ts`, `app/api/**/*.ts` — sources needing test coverage
+- `tests/helpers.ts` — the fixture/mock surface
+- `vitest.config.*` — test configuration
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+### Coverage gaps in critical paths
+- Every file in `lib/bookkeeping/` should have tests — engine, invoice-entries, supplier-invoice-entries, vat-entries, currency-revaluation, mapping-engine
+- Every API route in `app/api/bookkeeping/`, `/api/invoices/`, `/api/supplier-invoices/`, `/api/transactions/` should have tests
+- `lib/reports/` — reports generate financial data; untested report = legal risk
+- `lib/auth/` — API keys, MFA, cron auth — security-critical, needs tests
+- `lib/core/bookkeeping/` — period-service, year-end-service, storno-service — critical
+- `lib/invoices/vat-rules.ts` — known edge cases (mixed rate, reverse charge, VIES) — tests exist?
+
+### API route test completeness
+- Each route should have tests for:
+  - 401 when unauthenticated
+  - 400 when validation fails (invalid body)
+  - 404 when resource not found (company or entry)
+  - 500 when downstream fails
+  - Happy path with correct response shape
+  - MFA check on hosted if route is MFA-gated
+- Missing any of these = high severity
+
+### Mock pattern compliance
+- Tests should use `createMockSupabase()` or `createQueuedMockSupabase()` — not ad-hoc `vi.fn()` chains
+- `@/lib/supabase/server` mocked in tests that touch DB
+- `@/lib/init` mocked in API route tests (avoids loading extensions)
+- Custom mocks that reinvent helpers — flag (should use shared helpers)
+
+### Fixture factory usage
+- Tests create test data via `makeJournalEntry()` etc. — not manual object literals
+- Flag tests that build big fixtures inline — should use factories
+
+### Test isolation
+- `vi.clearAllMocks()` in `beforeEach` — present?
+- `eventBus.clear()` in `beforeEach` for tests emitting events — present? Otherwise tests bleed into each other
+- Test-local state (spies, DB) reset between tests
+
+### Event bus tests
+- When engine emits an event, is the test checking the emission?
+- Handler registration: test that the right handler runs on the right event?
+
+### Swedish-specific edge cases
+- VAT: mixed rate (25/12/6 on one invoice), reverse charge, export, exempt — each tested?
+- SIE: encoding edge cases (CP437 file with å/ä/ö), unbalanced voucher, IB/UB mismatch — tested?
+- Kreditfaktura: reverses correctly?
+- Year-end: periodiseringsfond cap, övers avskrivning, bolagsskatt — tested?
+
+### Flaky patterns
+- `setTimeout` in tests — likely flaky; use `vi.useFakeTimers()`
+- Real network calls (should all be mocked) — flag
+- Date-dependent tests without `vi.setSystemTime()` — flaky
+- Non-deterministic fixture data (e.g., `Math.random`) — flag
+
+### Outdated tests
+- Tests asserting against old schema/type shapes
+- Commented-out tests — flag, decide: fix or delete
+- `.skip` tests — flag, should not be skipped long-term
+
+### Assertion quality
+- `expect(x).toBeDefined()` — weak
+- `expect(x).toBe(true)` without context — weak
+- Deep equality checks against full fixtures — brittle
+- Prefer property-level assertions: `expect(result.voucher_number).toBe(1)`
+
+### Error path tests
+- Zod schema validation: tested against invalid inputs?
+- Postgres errors: tested by mocking `data: null, error: {...}`?
+- HTTP errors from providers: tested with mock fetch returning 500?
+
+### Integration vs unit
+- Pure functions: fast unit tests, plenty of cases
+- Engine paths: integration tests that exercise multiple modules together
+- API routes: route-level tests with request/response
+- DB triggers: can't easily unit-test; note if there's any integration test hitting staging DB
+
+### Test naming
+- Descriptive test names: `it("creates a balanced journal entry from an invoice with mixed VAT rates")` — good
+- `it("works")` or `it("test 1")` — flag
+
+### Coverage metric
+- Is `npm run test -- --coverage` enabled? What's the threshold?
+- Areas with < 80% line coverage on critical paths — flag
+
+### Testing the right thing
+- Testing implementation details vs behavior: prefer behavior
+- Mocking too much that tests become meaningless — flag
+- Testing stubs that never fail
+
+### CI-specific
+- Tests run in CI (`core-build.yml`)? Which subset?
+- Flaky test policy (retry once vs fail fast)?
+
+## Severity
+
+- **critical**: engine/reports/auth-critical file has zero tests
+- **high**: API route missing 401/400/500 coverage; Swedish edge case (reverse charge, mixed VAT) untested
+- **medium**: test uses `console.log` instead of assertion; flaky pattern; fixtures inline instead of via factory
+- **low**: weak assertion (`toBeDefined`), missing `eventBus.clear()`
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-testing-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-testing-agent report
+
+## Summary
+{1–2 sentence summary — include coverage gap summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123` (source file with gap) or `path/to/file.test.ts:45` (flawed test)
+- **Aspect**: coverage | mock | fixture | isolation | assertion | flaky | naming
+- **Description**: {what's missing or wrong}
+- **Suggested fix**: {what should be added — sketch an `it("...")` if helpful}
+```
+
+Add **Aspect** as an extra field.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required.
+- Don't propose massive test plans in one finding — one gap per finding.
+- Stay in your lane. Don't audit code quality of production code outside the testing lens; other agents cover that.
diff --git a/.claude/skills/swarm-ticket-drafter/SKILL.md b/.claude/skills/swarm-ticket-drafter/SKILL.md
new file mode 100644
index 00000000..56ffa8a0
--- /dev/null
+++ b/.claude/skills/swarm-ticket-drafter/SKILL.md
@@ -0,0 +1,111 @@
+---
+name: swarm-ticket-drafter
+description: "Turn approved audit findings into GitHub issues on erp-mafia/gnubok. Used by /swarm after user approval, but also standalone when you have findings from another source (manual review, old report files). Handles dedup against open issues, issue formatting, label assignment, and batch creation with partial-failure tolerance."
+---
+
+# swarm-ticket-drafter
+
+Converts a list of approved audit findings into GitHub issues on `erp-mafia/gnubok`. One finding → one issue.
+
+## When to use
+
+- Invoked by the `/swarm` orchestrator in step 8 (post-approval ticket creation).
+- Standalone: you have a findings report file (e.g., an old `.swarm/{timestamp}/findings.md`) and want to turn approved items into tickets.
+
+## Input shape
+
+For each finding:
+
+| Field | Example |
+|---|---|
+| `agent` | `vat` (short name) |
+| `title` | `Missing VIES timeout handling` |
+| `severity` | `critical` \| `high` \| `medium` \| `low` |
+| `file` | `lib/vat/vies-client.ts:47` |
+| `description` | `When VIES responds slowly, the request hangs with no timeout, blocking the invoice save flow.` |
+| `suggestedFix` | `Wrap the fetch in AbortController with 10s timeout; show Swedish "VIES-valideringen tog för lång tid" on timeout.` |
+
+## Workflow
+
+### 1. Dedup check (skip if orchestrator already did it)
+
+```
+mcp__github__list_issues(owner="erp-mafia", repo="gnubok", state="open", perPage=100)
+```
+
+Paginate if needed. For each finding, check open issues for:
+- Title keyword overlap (3+ significant words)
+- Same file path mentioned in body
+- Same domain + similar symptom
+
+Flag matches as duplicates. **Duplicates are not created.**
+
+### 2. Confirm approval
+
+If the caller hasn't explicitly provided an approval list, show the proposed issues and ask:
+
+> Create these N issues? (`yes` / `no` / specific numbers)
+
+Never create issues without confirmation.
+
+### 3. Create issues
+
+For each approved, non-duplicate finding, call:
+
+```
+mcp__github__issue_write(
+  method="create",
+  owner="erp-mafia",
+  repo="gnubok",
+  title="[{agent}] {title}",
+  body=<see template below>,
+  labels=["audit", "severity-{severity}"]
+)
+```
+
+**Body template** (exact format — don't paraphrase):
+
+```markdown
+**Severity**: {severity}
+**File**: `{file}`
+
+### Description
+{description}
+
+### Suggested fix
+{suggestedFix}
+
+---
+_Generated by `/swarm` audit._
+```
+
+### 4. Handle label failures gracefully
+
+If the issue creation fails with a "label not found" error, retry the exact same call with `labels=[]`. Don't abort the batch.
+
+Record which issues got labels and which didn't, for the final report.
+
+### 5. Report results
+
+Return a compact summary:
+
+```
+Created N issues on erp-mafia/gnubok:
+- #123 [vat] Missing VIES timeout handling → https://github.com/erp-mafia/gnubok/issues/123
+- #124 [security] Unparameterized SQL in RPC → https://github.com/erp-mafia/gnubok/issues/124
+
+Skipped M duplicates:
+- {title} (already tracked: #142)
+
+Failed K:
+- {title}: {error reason}
+```
+
+## Rules
+
+- **One issue per finding**. Never batch multiple findings into a single issue.
+- **Never create without approval**. Approval comes from the caller (usually the user via `/swarm`).
+- **Never create for duplicates**. If a dupe was flagged, skip and note it.
+- **Partial failure tolerance**. A single ticket failure must not stop the batch.
+- **Issue title convention**: `[{agent-short-name}] {title}`. Keep titles under 80 chars — truncate with `…` if needed.
+- **No automation of comments, assignments, or project-board moves**. Just create the issue with title, body, and labels.
diff --git a/.claude/skills/swarm-ui-ux-agent/SKILL.md b/.claude/skills/swarm-ui-ux-agent/SKILL.md
new file mode 100644
index 00000000..cd794255
--- /dev/null
+++ b/.claude/skills/swarm-ui-ux-agent/SKILL.md
@@ -0,0 +1,183 @@
+---
+name: swarm-ui-ux-agent
+description: "Read-only audit agent for gnubok's UI/UX consistency against its design system (minimal, sharp, efficient — Mercury-esque). Sweeps for shadcn/ui usage, Tailwind class consistency, typography (Fraunces serif / Geist sans / tabular-nums), color palette restraint (grayscale + sage/terracotta/ochre), spacing rhythm, component reuse, Swedish microcopy quality. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-ui-ux-agent
+
+You are a read-only audit agent. Your lens is **UI/UX consistency with gnubok's design system**. gnubok's brand is minimal, sharp, efficient — think Mercury banking, anti-SAP. Every UI deviation from that baseline is a finding. You never write code, never create tickets, never commit.
+
+## Design baseline (from `CLAUDE.md` § Design Context)
+
+- **Brand**: minimal, sharp, efficient — Mercury-esque
+- **Palette**: grayscale foundation, restrained semantics (sage success, terracotta error, ochre warning). No loud brand color.
+- **Typography**: Fraunces (serif) for display headings, Geist (sans) for body. **Tabular numbers everywhere financial data appears.**
+- **Surfaces**: white/near-white cards on light gray, subtle borders (60% opacity), soft shadows
+- **Spacing**: generous whitespace; dense data (tables, ledgers) tighter but never cramped
+- **Motion**: subtle, purposeful. Stagger animations for lists, spring easing for feedback. Never decorative.
+- **Icons**: Lucide — 15px in nav, slightly larger in empty states
+
+## Design principles
+
+1. Clarity over cleverness
+2. Earned minimalism — don't strip context that prevents compliance errors
+3. Numbers are first-class (tabular-nums, right-aligned where appropriate, positive/negative clear)
+4. Trust through consistency
+5. Speed is a feature (optimize for the 90-second session)
+
+## Files to sweep
+
+- `app/**/*.tsx` and `app/**/*.jsx` — pages and layouts
+- `components/**/*.tsx` — reusable components
+- `components/ui/**` (shadcn/ui base components)
+- `tailwind.config.*` — custom tokens, colors, fonts
+- `app/globals.css` or equivalent — global styles
+- `types/index.ts` — for UI-facing types
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`, `app/api/**` (not UI).
+
+## What to look for
+
+### Typography
+- Headings use Fraunces (serif) via Tailwind token or CSS variable — flag places using default sans for headings
+- Body uses Geist sans — flag Inter/system-ui overrides
+- **All financial numbers** (amounts, percentages, account balances, totals) use `tabular-nums` or Tailwind `tabular-nums` class — flag every amount rendered without tabular alignment
+- Font weights restrained — `font-medium` default, `font-semibold` for emphasis, rarely `font-bold`
+
+### Color palette
+- Grayscale base: zinc/neutral/stone — choose ONE and stick with it. Flag mixing.
+- Semantic colors used only for their meaning:
+  - Sage green (success, balance OK, paid invoice)
+  - Terracotta (error, overdue, unpaid)
+  - Ochre (warning, attention needed)
+- No loud brand color (no indigo/blue/purple accent)
+- Avoid saturated primaries (no `bg-blue-500`, `text-red-600`)
+- Flag components using Tailwind color palette beyond the above
+
+### Spacing & layout
+- Padding/margin on a consistent rhythm (4/6/8/12/16/24/32) — flag outliers like `p-5`, `mt-7`
+- Card-like surfaces use the same default padding (`p-6` or `p-8`)
+- Vertical rhythm: section breaks, whitespace between groups
+- Dense data tables: tighter spacing but use `divide-y` rather than gaps
+
+### Components — shadcn/ui usage
+- Reuse `components/ui/button`, `card`, `input`, `select`, `dialog`, etc.
+- Custom buttons that should be `<Button>` — flag
+- Ad-hoc modals that should be `<Dialog>` — flag
+- Custom selects that should be `<Select>` — flag
+
+### Form patterns
+- Label + input alignment consistent (stacked with label on top is typical for Swedish accounting forms)
+- Error state: red ring + message below, not floating tooltip
+- Placeholder text used for hints, not as label replacement
+- Required indicator (asterisk or text) — consistent?
+
+### Button patterns
+- Primary action: one per surface. Flag multi-primary layouts.
+- Destructive actions: secondary/outlined with red tint, confirm dialog, NOT primary-danger
+- Icon-only buttons have `aria-label` (a11y agent will double-check)
+- Loading state: spinner replaces label or icon, button still wide enough to not jump
+
+### Empty states
+- Every list page should have an empty state (icon + title + description + primary action)
+- Empty states consistent style?
+- Skeleton loaders vs spinners: prefer skeleton for content, spinner for buttons
+
+### Error states
+- Error pages match style (Fraunces headline, Geist body, minimal imagery)
+- Inline errors: terracotta, icon paired (not color alone)
+- Swedish copy ("Kunde inte ladda fakturor. Försök igen." not "Failed to load invoices.")
+
+### Tables & data-dense views
+- Sticky headers on long tables
+- Column alignment: left for text, right for numbers
+- Zebra striping: allowed but restrained (10-15% opacity)
+- Row hover state
+- Sort indicators visible but not dominant
+- Empty table state
+
+### Swedish copy
+- All user-facing strings in Swedish — flag any English leaking in
+- Formal but not stiff — "du" form, not "ni"
+- Currency: "kr" suffix or "SEK" — consistent?
+- Dates: ISO (2026-04-22) or Swedish (22 apr 2026) — consistent?
+- Decimal separator: comma (24 500,00 kr) — Swedish convention. Period (24,500.00) = wrong.
+- Thousands separator: space (24 500) or non-breaking space
+
+### Motion
+- Animations ≤ 300ms for feedback, ≤ 500ms for transitions
+- Spring easing on user-triggered feedback (button press, toggle)
+- Stagger animations on lists (10-30ms between items)
+- `motion-safe:` / `prefers-reduced-motion` respected — a11y agent will double-check; you flag if decoration is not gated
+- No spinning/bouncing purely for decoration
+- No auto-playing hero animations
+
+### Icons
+- Lucide (`lucide-react`) — 15px in nav, 18-20px in buttons, 24+ in empty states
+- Consistent stroke width (default 2)
+- Don't mix icon libraries (no Heroicons alongside Lucide)
+
+### Dark mode
+- If dark mode is supported: does every surface work?
+- Inverted grays still legible?
+- Semantic colors adjusted for dark background?
+- Subtle borders still visible?
+
+### Micro-copy
+- Button labels: verbs, short (Spara, Ångra, Skicka faktura)
+- Confirmations: Swedish, specific to action (Är du säker på att du vill ta bort kund "X"?)
+- Success toasts: short, past-tense (Fakturan sparad, Kund tillagd)
+- Error toasts: helpful, often with next step
+- Form hints: when not obvious
+
+### Accessibility touches (not your lane but flag glaringly obvious)
+- Icon-only buttons without `aria-label` → mention briefly, the a11y agent will cover in depth
+- Color-only state indicators — pair with icon/shape
+- Low-contrast text on gray-on-gray — flag
+
+### Consistency check
+- Two screens showing the same data type (invoices table, customers table) — same columns, same actions, same empty state?
+- Settings pages — consistent layout pattern?
+- Dashboard widgets — consistent card treatment?
+
+## Severity
+
+- **critical**: complete design-system violation (SAP-style dense table, neon brand color, mixing fonts visibly)
+- **high**: non-tabular numbers in financial display; Swedish copy in English; shadcn/ui not used where it should be
+- **medium**: spacing inconsistency; off-brand color; empty state missing
+- **low**: microcopy polish, icon size nit, padding rhythm off
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-ui-ux-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-ui-ux-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.tsx:123`
+- **Area**: typography | color | spacing | component | form | button | empty | error | table | copy | motion | icon | dark-mode | consistency
+- **Description**: {what's wrong; reference the design baseline}
+- **Suggested fix**: {what should change}
+```
+
+Add **Area** as an extra field.
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required.
+- You are Sonnet — move fast through many files. Don't agonize over subtle design debate; flag clear deviations from the baseline.
+- Stay in your lane. Accessibility → `swarm-a11y-agent`. Mobile → `swarm-mobile-ux-agent`. Performance → `swarm-performance-agent`. You own visual/interaction *consistency*.
diff --git a/.claude/skills/swarm-vat-agent/SKILL.md b/.claude/skills/swarm-vat-agent/SKILL.md
new file mode 100644
index 00000000..550b6bd1
--- /dev/null
+++ b/.claude/skills/swarm-vat-agent/SKILL.md
@@ -0,0 +1,83 @@
+---
+name: swarm-vat-agent
+description: "Read-only audit agent for Swedish VAT (moms) correctness. Sweeps gnubok for VAT calculation bugs, VAT declaration Rutor mapping errors, missing VIES validation, edge cases in mixed-rate invoices, reverse charge handling, and error handling when VAT providers fail. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-vat-agent
+
+You are a read-only audit agent. Your lens is **Swedish VAT (moms)**. You never write code, never create tickets, never commit.
+
+## Domain expertise
+
+Invoke the `swedish-vat` skill via the Skill tool. Treat its knowledge as the compliance baseline — every VAT-handling line of code should align with what that skill says.
+
+## Files to sweep (primary)
+
+- `lib/bookkeeping/vat-entries.ts` — VAT journal entry generation
+- `lib/invoices/vat-rules.ts` — `getAvailableVatRates`, per-rate line generation
+- `lib/vat/` — VIES client, EU countries, MOMS box mapping
+- `lib/reports/vat-declaration.ts` — SKV 4700 Rutor 05–62 mapping
+- `types/index.ts` — `VatTreatment`, `VatDeclarationRutor` types
+
+## Files to sweep (secondary — VAT concerns appear here)
+
+- `lib/bookkeeping/invoice-entries.ts`, `lib/bookkeeping/supplier-invoice-entries.ts` — per-rate VAT on lines
+- `app/api/invoices/**`, `app/api/supplier-invoices/**` — VAT validation on write
+- `app/api/reports/vat-declaration/**` — declaration endpoint
+- `lib/bookkeeping/bas-data/**` — 2611/2621/2631/2641/2645 definitions
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+- **Ruta mapping correctness**: Does 05 sum all domestic taxable sales (3001+3002+3003)? Does 49 = (10+11+12+30+31+32+60+61+62) − 48? Are 30/31/32 (EU acquisition output VAT) wired correctly?
+- **Per-rate purity**: Is `generatePerRateLines` actually splitting 25/12/6 correctly? Does it round per rate, not on the total?
+- **Reverse charge (omvänd skattskyldighet)**: byggtjänster, EU B2B services, electronics — right BAS accounts, right Rutor (24/30/31/32/48), right invoice notation?
+- **VIES validation**: timeout handling, what happens on HTTP 500/503, cache behaviour, rate limit handling, how does the UI represent "validated" vs "unvalidated" VAT number?
+- **Representation 300 SEK cap**: is input VAT correctly limited on representation entries?
+- **Mixed verksamhet (proportionell avdragsrätt)**: does the code assume full deductibility where it shouldn't?
+- **Jämkning (capital goods VAT adjustment)**: is there any handling at all? If capital goods are sold within 10 years, is jämkning computed?
+- **Currency + VAT**: is VAT computed in SEK on invoice date FX rate? What about partial payments in a different period?
+- **Frivillig skattskyldighet (property rental VAT)**: any handling? Flag missing if not present.
+- **Error messages**: are VAT errors in Swedish, specific, and actionable? Or generic "Something went wrong"?
+- **Monetary rounding**: `Math.round(x * 100) / 100` everywhere, never `toFixed()`?
+
+## Severity
+
+- **critical**: wrong VAT booked to a real account, wrong Ruta sum, reverse charge missed where legally required
+- **high**: VIES validation missing/broken, user-facing Swedish message wrong or generic, missing rate validation on invoice item
+- **medium**: missing test for known VAT edge case, unclear error, minor Ruta arithmetic nit
+- **low**: comment/naming nit
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-vat-agent.md` where `{TIMESTAMP}` is provided in the launch prompt.
+
+Schema (exact):
+
+```markdown
+# swarm-vat-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Description**: {what's wrong in 1–3 sentences, with the Swedish rule cited where relevant}
+- **Suggested fix**: {what should change in 1–3 sentences}
+
+### Finding 2: ...
+```
+
+If no findings: `## Summary\nNo findings.` plus an empty Findings section. Always write the report.
+
+Return just: report path + one-line summary. Do not restate findings.
+
+## Rules
+
+- Read-only. No edits, no git, no GitHub.
+- File:line required on every finding. Re-open the file to confirm the line if the number drifts during your review.
+- Stay in your lane. Invoice-compliance concerns (ML 17 kap 24§ invoice fields, fakturamodellen) belong to `swarm-invoice-compliance-agent`, not you. Overlap on VAT calculation is yours; invoice field correctness is theirs.
diff --git a/.claude/skills/swarm-year-end-agent/SKILL.md b/.claude/skills/swarm-year-end-agent/SKILL.md
new file mode 100644
index 00000000..4df4ef17
--- /dev/null
+++ b/.claude/skills/swarm-year-end-agent/SKILL.md
@@ -0,0 +1,85 @@
+---
+name: swarm-year-end-agent
+description: "Read-only audit agent for Swedish year-end closing (bokslut) correctness. Sweeps gnubok for bokslutstransaktioner, resultatdisposition, tax provisions (bolagsskatt, periodiseringsfond), överavskrivningar, year-end accruals, K2 vs K3 differences, period lock enforcement, NE-bilaga generation. Invoked by /swarm — not for direct user use."
+---
+
+# swarm-year-end-agent
+
+You are a read-only audit agent. Your lens is **Swedish year-end closing (bokslut)**. You never write code, never create tickets, never commit.
+
+## Domain expertise
+
+Invoke the `swedish-year-end-closing` skill via the Skill tool. Treat it as the baseline.
+
+## Files to sweep (primary)
+
+- `lib/core/bookkeeping/year-end-service.ts` — year-end closing procedures
+- `app/api/bookkeeping/fiscal-periods/**/year-end/**` — year-end endpoints
+- `app/bookkeeping/year-end/**` — year-end UI
+- `lib/core/bookkeeping/period-service.ts` — period open/close/lock
+- `lib/reports/ne-bilaga.ts` or equivalent — NE-bilaga for enskild firma
+- `lib/reports/ink2*.ts` — INK2 declaration for AB
+
+## Files to sweep (secondary)
+
+- Anything referencing accounts 2099 (Årets resultat), 2091 (Balanserat resultat), 8910 (Skatt), 8811 (Skatt föreg), 2512 (Beräknad skatt), 21xx (obeskattade reserver), 29xx (accruals)
+- Migration files touching `fiscal_periods` lock logic
+- `enforce_period_lock` / `enforce_company_lock_date` triggers
+
+Skip: `node_modules/`, `.next/`, `.swarm/`, `packages/gnubok-mcp/dist/`, `lib/extensions/_generated/`.
+
+## What to look for
+
+- **Step sequence**: pre-closing → accruals → tax → resultatdisposition → lock. Is the sequence enforced, or can it be done out of order and produce bad closing?
+- **Periodiseringsfond**: AB max 25% of resultat före skatt → 2125 (avsättning). EF max 30% → 2119 or similar. Correct limits? Correct account?
+- **Överavskrivningar**: 2150 (obeskattad reserv) + 8850 (bokslutsdisposition). Räkenskapsenlig 30% vs restvärde 25% — is the choice exposed?
+- **Bolagsskatt**: 2026 rate (20.6%), applied to justerat resultat. Booked 8910 (debit) / 2512 (credit)?
+- **Egenavgifter** (EF): 28.97% (fully active), lower for part-time. Räntefördelning (positive allocates to capital tax, negative is limited) — handled?
+- **Expansionsfond** (EF): 20.6% tax prepay, booked appropriately?
+- **Accruals (periodiseringar)**: upplupna intäkter (1790), förutbetalda kostnader (1790), upplupna kostnader (2990), förutbetalda intäkter (2990). Reversal in new year period-1?
+- **Resultatdisposition**: 8999 → 2099 → 2091 chain correctly booked?
+- **K2 vs K3 differences**: component depreciation (K3 only), revenue recognition (K3 allows % of completion), värdering av tillgångar. Is the K2/K3 choice persisted per company? Does the logic differ?
+- **NE-bilaga (EF)**: all required fields? Linked to SRU generation?
+- **INK2 (AB)**: filing deadline based on fiscal year end + revisionsplikt rules. Deadlines enforced?
+- **Period lock**: once year is closed, can anything still write? Should be blocked by `enforce_period_lock` DB trigger — is there a way to bypass?
+- **Lock date**: company-wide `lock_date` vs per-period lock — conflict possible?
+- **Re-open**: is there a "reopen fiscal year" path? If yes, audit trail preserved?
+- **Missing transactions at close**: does the code warn if there are draft entries, unmatched bank transactions, or unreconciled accounts before closing?
+
+## Severity
+
+- **critical**: year-end closing produces wrong bolagsskatt or wrong årets resultat; period lock bypassable; wrong periodiseringsfond cap
+- **high**: K2/K3 logic missing or always K2, resultatdisposition booked to wrong accounts, NE-bilaga fields missing
+- **medium**: missing warning for draft entries at close, unclear error
+- **low**: nit
+
+## Output
+
+Write your report to `.swarm/{TIMESTAMP}/swarm-year-end-agent.md`.
+
+Schema:
+
+```markdown
+# swarm-year-end-agent report
+
+## Summary
+{1–2 sentence summary}
+
+## Findings
+
+### Finding 1: {short title}
+- **Severity**: critical | high | medium | low
+- **File**: `path/to/file.ts:123`
+- **Description**: {what's wrong, cite BFL/ÅRL section where relevant}
+- **Suggested fix**: {what should change}
+```
+
+If no findings: `## Summary\nNo findings.` with empty Findings.
+
+Return just: report path + one-line summary.
+
+## Rules
+
+- Read-only.
+- File:line required on every finding.
+- Stay in your lane. Årsredovisning structure (noter, förvaltningsberättelse, Bolagsverket filing) belongs to `swarm-financial-reporting-agent`. SRU file generation belongs to `swarm-sru-agent`. You focus on the closing *mechanics*.
diff --git a/.claude/skills/swarm/SKILL.md b/.claude/skills/swarm/SKILL.md
new file mode 100644
index 00000000..b8e75252
--- /dev/null
+++ b/.claude/skills/swarm/SKILL.md
@@ -0,0 +1,252 @@
+---
+name: swarm
+description: "Run the gnubok read-only audit swarm. Launches 25 specialized audit agents in parallel, each sweeping the codebase through their own lens (Swedish VAT, security, error handling, UI/UX, etc.). Produces a flat numbered findings list, dedups against open GitHub issues on erp-mafia/gnubok, and creates approved tickets. Usage: /swarm (all agents), /swarm vat,security,ui-ux (subset), /swarm domain (all domain agents), /swarm cross-cutting (all cross-cutting agents), /swarm opus or /swarm sonnet (by model)."
+---
+
+# /swarm — gnubok audit swarm
+
+You are the orchestrator. Launch read-only audit agents in parallel, collect their reports, build a flat numbered findings list, dedup against open issues on `erp-mafia/gnubok`, and create approved tickets after explicit user approval.
+
+**You never write code changes during /swarm. You never create tickets without user approval.**
+
+## Agent roster
+
+### Domain agents — **Opus** (reuse existing Swedish-compliance skills)
+
+| Short name | Full name | Underlying skill |
+|---|---|---|
+| `vat` | `swarm-vat-agent` | `swedish-vat` |
+| `invoice-compliance` | `swarm-invoice-compliance-agent` | `swedish-invoice-compliance` |
+| `payroll` | `swarm-payroll-agent` | `swedish-payroll` |
+| `sie` | `swarm-sie-agent` | `swedish-sie-import-export` |
+| `sru` | `swarm-sru-agent` | `swedish-sru-filing` |
+| `year-end` | `swarm-year-end-agent` | `swedish-year-end-closing` |
+| `asset-accounting` | `swarm-asset-accounting-agent` | `swedish-asset-accounting` |
+| `financial-reporting` | `swarm-financial-reporting-agent` | `swedish-financial-reporting` |
+| `tax-planning` | `swarm-tax-planning-agent` | `swedish-tax-planning` |
+| `project-accounting` | `swarm-project-accounting-agent` | `swedish-project-accounting` |
+| `bookkeeping-engine` | `swarm-bookkeeping-engine-agent` | *(no existing skill — substantive)* |
+
+### Cross-cutting agents — **Opus**
+
+| Short name | Full name |
+|---|---|
+| `provider-connections` | `swarm-provider-connections-agent` |
+| `security` | `swarm-security-agent` |
+| `rls-multitenancy` | `swarm-rls-multitenancy-agent` |
+| `auth-mfa` | `swarm-auth-mfa-agent` |
+| `error-handling` | `swarm-error-handling-agent` |
+| `event-bus` | `swarm-event-bus-agent` |
+| `document-retention` | `swarm-document-retention-agent` |
+| `rate-limits` | `swarm-rate-limits-agent` |
+
+### Cross-cutting agents — **Sonnet**
+
+| Short name | Full name |
+|---|---|
+| `ui-ux` | `swarm-ui-ux-agent` |
+| `a11y` | `swarm-a11y-agent` |
+| `mobile-ux` | `swarm-mobile-ux-agent` |
+| `logging` | `swarm-logging-agent` |
+| `testing` | `swarm-testing-agent` |
+| `performance` | `swarm-performance-agent` |
+
+Total: 25 agents (11 domain + 8 cross-cutting Opus + 6 cross-cutting Sonnet).
+
+## Workflow
+
+### 1. Parse args
+
+Args arrive via the Skill tool's `args` parameter.
+
+| Input | Resolves to |
+|---|---|
+| *(empty)* | all 25 agents |
+| `domain` | all 11 domain agents |
+| `cross-cutting` | all 14 cross-cutting agents |
+| `opus` | all 19 Opus agents |
+| `sonnet` | all 6 Sonnet agents |
+| `vat,security,ui-ux` | just those short names |
+| `vat` | single agent |
+
+Short-name matching is case-insensitive. Strip `swarm-` prefix and `-agent` suffix when matching. Reject unknown names and ask the user to pick from the roster.
+
+### 2. Set up run directory
+
+Run this exactly once:
+
+```bash
+timestamp=$(date +%Y%m%d-%H%M%S) && mkdir -p ".swarm/$timestamp" && echo "$timestamp"
+```
+
+Capture the timestamp from stdout. Use it in every subsequent step. Keep quoting the path — `.swarm/$timestamp/`.
+
+### 3. Launch agents in parallel
+
+In **one message**, invoke the `Agent` tool once per requested agent. Never serialize them.
+
+For each agent:
+
+- **`subagent_type`**: `general-purpose`
+- **`description`**: `"Audit: {short-name}"` (3–5 words)
+- **`model`**: `opus` or `sonnet` per the roster above
+- **`prompt`**:
+
+  ```
+  You are the {FULL_AGENT_NAME} audit agent. You are read-only — never edit files, never create tickets, never commit.
+
+  Invoke the `{FULL_AGENT_NAME}` skill via the Skill tool and follow its instructions precisely.
+
+  The timestamp for this run is `{TIMESTAMP}`. Write your report to `.swarm/{TIMESTAMP}/{FULL_AGENT_NAME}.md`.
+
+  Work autonomously until the report is written. Always write a report, even if no findings — in that case the summary is "No findings." and the findings section is empty.
+
+  When done, return just the report path and a one-line summary of what you found (e.g. "Found 3 issues: 1 high, 2 medium"). Do not restate findings — the orchestrator will parse the report file.
+  ```
+
+  Substitute `{FULL_AGENT_NAME}` and `{TIMESTAMP}` with real values. Don't paraphrase the prompt — keep its shape so agent behavior is consistent.
+
+### 4. Collect reports
+
+When all `Agent` calls return, read each `.swarm/{TIMESTAMP}/{agent}.md` with the `Read` tool. If a report is missing (an agent crashed or timed out), note it and continue — don't abort the whole run.
+
+### 5. Build the flat numbered findings list
+
+Parse each report's `## Findings` section. Each finding has: title, severity, file:line, description, suggested fix.
+
+Build a single flat numbered list. Group by agent in roster order (domain first, then cross-cutting Opus, then Sonnet). Within each agent, sort by severity: critical → high → medium → low.
+
+**Format (this is how the user wants to see it):**
+
+```markdown
+# Swarm findings — {TIMESTAMP}
+
+**Agents run**: {count} • **Total findings**: {count} ({critical} critical, {high} high, {medium} medium, {low} low)
+
+---
+
+1. **VAT agent**: {short title} [{severity}]
+   - File: `lib/invoices/vat-rules.ts:47`
+   - {1–2 sentence description}
+   - Suggested fix: {1–2 sentences}
+
+2. **VAT agent**: {short title} [{severity}]
+   - File: `lib/vat/vies-client.ts:123`
+   - {description}
+   - Suggested fix: {suggestion}
+
+3. **Security agent**: {short title} [{severity}]
+   ...
+
+...
+```
+
+Agent prefix = capitalized short name + " agent" (e.g., `vat` → "VAT agent", `ui-ux` → "UI-UX agent", `rls-multitenancy` → "RLS-multitenancy agent"). Keep acronyms uppercase (VAT, SIE, SRU, UI, RLS, MFA).
+
+Save this list to `.swarm/{TIMESTAMP}/findings.md`.
+
+### 6. Dedup against open issues
+
+Call `mcp__github__list_issues(owner="erp-mafia", repo="gnubok", state="open", perPage=100)`. Paginate if needed.
+
+For each finding, check if an open issue plausibly duplicates it. Match heuristics:
+- Title keyword overlap (3+ significant words match)
+- Same file path mentioned in issue body
+- Same domain + similar symptom
+
+When a match is found, annotate the finding inline in `findings.md`:
+
+```
+3. **Security agent**: {title} [{severity}]  — 🔁 Already tracked: [#142](https://github.com/erp-mafia/gnubok/issues/142)
+```
+
+Err on the side of flagging possible dupes rather than missing them. The user can override during approval.
+
+### 7. Present to user
+
+Show the flat numbered list (inline in your response — don't just point at the file). End with:
+
+> **Which findings should become tickets?**
+> Options: `all` / `none` / `skip dupes` (all non-duplicates) / specific numbers like `1,3,5-7`
+
+Wait for the user's reply.
+
+### 8. Create approved tickets
+
+For each approved finding that is NOT flagged as a duplicate, create an issue on `erp-mafia/gnubok` via `mcp__github__issue_write`:
+
+- **method**: `create`
+- **owner**: `erp-mafia`
+- **repo**: `gnubok`
+- **title**: `[{agent-short-name}] {finding title}`
+- **body**:
+
+  ```markdown
+  **Severity**: {severity}
+  **File**: `{file:line}`
+
+  ### Description
+  {description}
+
+  ### Suggested fix
+  {suggested fix}
+
+  ---
+  _Generated by `/swarm` audit on {TIMESTAMP}._
+  ```
+
+- **labels**: `["audit", "severity-{severity}"]`
+
+If label application fails because the labels don't exist in the repo, retry without labels. Don't abort the batch on a single failure — continue and report failures at the end.
+
+You may delegate this step to the `swarm-ticket-drafter` skill if the batch is large; the logic is identical.
+
+### 9. Report results
+
+Summarize for the user:
+
+```
+Created N issues on erp-mafia/gnubok:
+- #123 [vat] Missing VIES timeout handling → https://github.com/erp-mafia/gnubok/issues/123
+- #124 [security] Unparameterized SQL in RPC → https://github.com/erp-mafia/gnubok/issues/124
+...
+
+Skipped M duplicates (already tracked).
+Skipped K findings per your approval list.
+```
+
+If any ticket creation failed, list the failures with the reason.
+
+## Directory layout
+
+```
+.swarm/
+└── {TIMESTAMP}/
+    ├── swarm-vat-agent.md
+    ├── swarm-security-agent.md
+    ├── ... (one file per agent that ran)
+    └── findings.md                 ← flat numbered list
+```
+
+`.swarm/` is gitignored.
+
+## Severity definitions (for consistency across agents)
+
+- **critical**: Data loss, legal/compliance exposure, or something that breaks Swedish accounting law (Bokföringslagen, ML 2023:200, BFNAR). Fix immediately.
+- **high**: User-facing bug or security issue. Fix in the next iteration.
+- **medium**: Meaningful code quality issue — unclear error, missing test, minor compliance gap.
+- **low**: Nit — naming, comment, style.
+
+## Rules (non-negotiable)
+
+1. **Read-only**. No file edits, no git operations, no auto-ticket creation.
+2. **Parallel launch**. Always invoke all agents in a single message.
+3. **Always write reports**. Even when nothing found — so we know the agent ran.
+4. **User approval required**. Never create tickets without an explicit approval message.
+5. **Dedup before proposing**. Running this weekly should not flood the repo with duplicates.
+6. **File:line required** on every finding. No vague references.
+7. **Keep the flat list flat**. One numbered list. Do not nest by agent, do not reorder outside the defined sort.
+
+## Single-agent mode
+
+`/swarm vat` still runs the full pipeline: one agent, one report, findings presented, dupes checked, tickets offered. The pipeline does not short-circuit for single-agent runs.
diff --git a/.gitignore b/.gitignore
index 0c5e9e86..825ac5a8 100644
--- a/.gitignore
+++ b/.gitignore
@@ -48,6 +48,9 @@ supabase/.temp/
 .claude/settings.local.json
 .claude/scheduled_tasks.lock
 
+# swarm audit reports (generated by /swarm)
+.swarm/
+
 # dev docs (internal reference, not published)
 /dev_docs
 
diff --git a/findings.md b/findings.md
new file mode 100644
index 00000000..340877df
--- /dev/null
+++ b/findings.md
@@ -0,0 +1,1719 @@
+# Audit findings (non-critical)
+
+Generated by `/swarm` audit on 2026-04-22 (run `20260422-125911`).
+
+**Total non-critical findings**: 324 (~113 high, ~141 medium, ~73 low)
+
+The 35 critical findings from this audit were filed as GitHub issues on [`erp-mafia/gnubok`](https://github.com/erp-mafia/gnubok/issues). The full report including criticals is at `.swarm/20260422-125911/findings.md` (gitignored).
+
+Per-agent non-critical breakdown:
+
+| Agent | High | Medium | Low | Total |
+|---|---:|---:|---:|---:|
+| VAT | 6 | 4 | 1 | 11 |
+| Invoice-compliance | 7 | 5 | 2 | 14 |
+| Payroll | 3 | 7 | 0 | 10 |
+| SIE | 3 | 3 | 8 | 14 |
+| SRU | 9 | 8 | 2 | 19 |
+| Year-end | 7 | 6 | 7 | 20 |
+| Asset-accounting | 4 | 1 | 1 | 6 |
+| Financial-reporting | 4 | 5 | 2 | 11 |
+| Tax-planning | 5 | 5 | 1 | 11 |
+| Project-accounting | 3 | 4 | 2 | 9 |
+| Bookkeeping-engine | 4 | 4 | 1 | 9 |
+| Provider-connections | 8 | 5 | 1 | 14 |
+| Security | 0 | 4 | 8 | 12 |
+| RLS-multitenancy | 3 | 4 | 1 | 8 |
+| Auth-MFA | 3 | 8 | 4 | 15 |
+| Error-handling | 5 | 6 | 5 | 16 |
+| Event-bus | 3 | 5 | 1 | 9 |
+| Document-retention | 4 | 6 | 2 | 12 |
+| Rate-limits | 3 | 6 | 3 | 12 |
+| UI-UX | 7 | 5 | 6 | 18 |
+| A11y | 4 | 9 | 5 | 18 |
+| Mobile-UX | 3 | 5 | 1 | 9 |
+| Logging | 4 | 10 | 6 | 20 |
+| Testing | 6 | 6 | 3 | 15 |
+| Performance | 4 | 6 | 2 | 12 |
+
+---
+
+## Domain agents
+
+### VAT agent
+
+**V1. getMomsRutaDescription returns wrong ruta 05/06/07 labels** [high]
+- File: `lib/invoices/vat-rules.ts:191`
+- Claims 05/06/07 are "Utgående moms 25%/12%/6%"; per SKV 4700 those are actually rutor 10/11/12. Actual labels are `05 = Momspliktig försäljning ej i annan ruta`, `06 = Momspliktiga uttag`, `07 = Vinstmarginalbeskattning`. Canonical version exists in `moms-box-mapping.ts`.
+- Fix: Delete function or correct labels; migrate call sites to `getBoxLabel()` from `moms-box-mapping.ts`.
+
+**V2. 300 SEK representation VAT cap mentioned in comments but never enforced** [high]
+- File: `lib/bookkeeping/category-mapping.ts:139`
+- Comment says `// Representation defaults to reduced_12 (max 300 SEK/person)` but no code computes cap. Users over-deduct VAT and face 20% skattetillägg on reassessment.
+- Fix: Add `participant_count` field; compute `min(actualVat, headcount × 36 SEK)` for food, or block the input-VAT booking until headcount confirmed.
+
+**V3. VIES error messages are English** [high]
+- File: `lib/vat/vies-client.ts:126`
+- `'VAT validation service unavailable. Please try again later.'` propagates to Swedish customer-creation flow.
+- Fix: Return Swedish, e.g. `'Momsnummerskontrollen (VIES) är tillfälligt otillgänglig. Försök igen om en stund.'`
+
+**V4. Reverse-charge revenue hardcoded to services account 3308/3305** [high]
+- File: `lib/bookkeeping/invoice-entries.ts:529`
+- Intra-EU goods sale classifies as service → Ruta 39 instead of 35. Per ML 5 kap 22-25§ distinction is material; mismatches produce SFL 52 kap 10§ penalties.
+- Fix: Add `sale_type: 'goods' | 'services'`; branch 3108/3308 for RC, 3105/3305 for export.
+
+**V5. Foreign-currency invoices use today's FX rate, not invoice-date rate** [high]
+- File: `app/api/invoices/route.ts:159`
+- Per ML 7 kap 7§ and EU VAT Directive Art. 91, conversion must use rate on invoice date. Backdated invoices book wrong SEK VAT. Same bug in `app/api/pending-operations/[id]/commit/route.ts:328`.
+- Fix: Pass invoice date: `fetchExchangeRate(invoiceInput.currency, new Date(invoiceInput.invoice_date))`.
+
+**V6. No jämkning / mixed verksamhet / frivillig skattskyldighet workflow** [high]
+- File: `lib/vat/` (missing module)
+- (a) No capital-goods jämkning tracking per ML 15 kap, (b) no avdragsandel for blandad verksamhet per ML 13 kap 29§, (c) no frivillig skattskyldighet för lokalhyra per ML 12 kap. Accounts exist but no logic populates them.
+- Fix: Three tracking tickets. Minimum viable: capital_goods table + avdragsandel on company_settings + frivillig flag per fastighet.
+
+**V7. Ruta 50 (import VAT base) always 0** [medium]
+- File: `lib/reports/vat-declaration.ts:201`
+- Skatteverket e-deklaration cross-validates Ruta 60 ≈ Ruta 50 × 25%; empty Ruta 50 with non-zero Ruta 60 generates validation error on upload.
+- Fix: Add `import_tax_base` field; populate from 4545/4546/4547 when 2615/2625/2635 booked.
+
+**V8. generateReverseChargeLines defaults to 25% when rate omitted** [medium]
+- File: `lib/bookkeeping/vat-entries.ts:88`
+- Callers in `booking-templates.ts:1567`, `mapping-engine.ts:225`, `counterparty-templates.ts:251` omit rate. Books 25% fiktiv moms to 2614 for 6%/12% EU-RC purchases.
+- Fix: Make `vatRate` required; throw on unsupported rate instead of falling through to 2614.
+
+**V9. Per-item vat_rate schema accepts any number 0-100** [medium]
+- File: `lib/api/schemas.ts:153`
+- Schema allows 18 which is rejected later with misleading message.
+- Fix: `z.union([z.literal(0), z.literal(6), z.literal(12), z.literal(25)])` with Swedish error.
+
+**V10. Reverse-charge path doesn't distinguish goods vs services (ruta 21/22 vs 20/23)** [medium]
+- File: `lib/reports/vat-declaration.ts:373`
+- Code comment admits `ruta20/23 (goods) → 0 for now`; EU goods acquisitions entirely missing.
+- Fix: Add `reverse_charge_type`; branch ruta assignment per goods/services.
+
+**V11. calculateVat has no unit guard and non-canonical rounding** [low]
+- File: `lib/invoices/vat-rules.ts:121`
+- No JSDoc; `Math.round(x) / 100` unusual vs canonical `Math.round(x * 100) / 100`.
+- Fix: Add JSDoc + range assertion; rewrite using canonical pattern.
+
+### Invoice-compliance agent
+
+**IC1. Credit note numbering risks collisions; not a separate series** [high]
+- File: `app/api/invoices/route.ts:309`
+- `KR-` prefix concatenation; per ML 17 kap 24§ p.2 numbers must be unique and from dedicated sequential series. Also `KR-KR-...` possible on correction-of-correction.
+- Fix: Add `next_credit_note_number` + prefix to `company_settings`; new RPC `generate_credit_note_number` with atomic UPDATE...RETURNING.
+
+**IC2. Foreign-currency invoice persisted without SEK VAT when Riksbanken returns null** [high]
+- File: `app/api/invoices/route.ts:158-167`
+- ML 17 kap 29§ requires SEK VAT amount on invoice charging Swedish VAT; currently persisted as null silently.
+- Fix: 503 Swedish error or force-populate with fallback rate + manual review flag.
+
+**IC3. Exchange rate fetched for creation date, not invoice date** [high]
+- File: `app/api/invoices/route.ts:159`
+- Per ML 8 kap 21-23§ tax point date must be used. Same fix needed in `app/api/invoices/[id]/convert/route.ts`.
+- Fix: Pass `new Date(invoiceInput.invoice_date)` to `fetchExchangeRate()`; persist `exchange_rate_date`.
+
+**IC4. Mandatory seller/buyer address (ML 17:24 p.5) not enforced** [high]
+- File: `lib/invoices/pdf-template.tsx:324-332`
+- No validation; new users with incomplete settings can send invoices with only company name. Zod schema doesn't check addresses.
+- Fix: Validate address presence on seller + buyer at POST and /send.
+
+**IC5. Buyer VAT number not verified on reverse-charge invoices** [high]
+- File: `app/api/invoices/route.ts:120-122`
+- Only `validated` flag checked; not `vat_number` non-empty. PDF silently omits when empty.
+- Fix: Assert `customer.vat_number && /^[A-Z]{2}\d{2,}/.test(...)` when treatment is reverse_charge.
+
+**IC6. No domestic reverse-charge support (byggtjänster/electronics)** [high]
+- File: `lib/invoices/vat-rules.ts:72-116`
+- No path for ML 16 kap 13§ byggtjänster or 17§ electronics; can't issue compliant construction invoices.
+- Fix: Add `domestic_reverse_charge` treatment with sub-types; wire to account 3231 + specific text + ruta 41.
+
+**IC7. No ROT/RUT fakturamodellen support** [high]
+- File: `types/index.ts` + engine (feature gap)
+- Per HUSFL 2009:194 6-9§§: no flag, no fastighetsbeteckning, no personnummer, no 1513/3740 split, no consumption cap tracking.
+- Fix: Add fields for personnummer/fastighet/labor-cost/deduction; split AR to SKV portion on 1513 + revenue reduction on 3740; print mandatory split on PDF.
+
+**IC8. No Peppol BIS 3.0 / e-invoicing support** [medium]
+- File: (feature gap)
+- B2G mandatory since 2019 (Lag 2018:1277); no UBL 2.1 generation, no Peppol endpoint, no sending.
+- Fix: Plan Peppol extension producing UBL 2.1 BIS 3.0 XML; send via access point (Pagero/Qvalia/etc.).
+
+**IC9. No självfakturering (self-billing) support** [medium]
+- File: `lib/invoices/pdf-template.tsx:264-270`
+- `InvoiceDocumentType` lacks `self_billing`; no notation rendering.
+- Fix: Add to type; render mandatory notation on PDF; store agreement reference.
+
+**IC10. OCR reference collides between credit note and original** [medium]
+- File: `lib/bankgiro/luhn.ts:65-70`
+- Invoice `2026001` and its credit note `KR-2026001` produce identical OCR → bank reconciliation confusion.
+- Fix: Inject prefix digit (e.g. 9) before numeric payload on credit notes.
+
+**IC11. Credit note items default vat_rate to 0 instead of original rate** [medium]
+- File: `app/api/invoices/route.ts:352-362`
+- `vat_rate: item.vat_rate ?? 0` drops legacy items to 0% VAT; PDF mis-renders.
+- Fix: Fall back to `originalInvoice.vat_rate ?? 25`; back-fill data migration.
+
+**IC12. invoice_items.vat_rate/vat_amount columns missing from migrations** [medium]
+- File: `supabase/migrations/20240101000001_core_schema.sql:246-256`
+- Columns added out-of-band to prod; fresh staging breaks mixed-rate invoicing.
+- Fix: Author migration `ALTER TABLE invoice_items ADD COLUMN IF NOT EXISTS vat_rate numeric, vat_amount numeric DEFAULT 0; NOTIFY pgrst, 'reload schema';` + data back-fill.
+
+**IC13. Public invoice-action reminder token has no expiry, leaks via GET URL** [low]
+- File: `supabase/migrations/20240101000005_invoice_reminders.sql:16-17`
+- 256-bit entropy but no `expires_at`; GET query logged in Vercel / browser history / Referer headers.
+- Fix: Add `expires_at timestamptz DEFAULT sent_at + interval '30 days'`; move to POST with token in body.
+
+**IC14. Invoice reminder cron uses console.log** [low]
+- File: `app/api/invoices/reminders/cron/route.ts:12`
+- Inconsistent with `reminder-processor.ts` using `createLogger`.
+- Fix: Use `createLogger('invoice-reminders-cron')`.
+
+### Payroll agent
+
+**P1. Karensavdrag per-year cap (10) not enforced** [high]
+- File: `lib/salary/absence-calculator.ts:63-79`
+- `config.maxKarensavdragPerYear = 10` defined but never referenced. Per Sjuklönelagen §7a the 11th karens must be refunded.
+- Fix: Look up prior karensavdrag count in last 12 months; pass `skipKarens` when ≥10.
+
+**P2. Jämkning silently dropped when validTo is missing** [high]
+- File: `lib/salary/calculation-engine.ts:271`
+- `isJamkningValid` returns false if validTo null; Skatteverket jämkning commonly has open-ended end dates.
+- Fix: Treat missing validTo as indefinite (default 9999-12-31); require dates when `jamkning_percentage` set.
+
+**P3. No Skatteverket F-skatt verification flow** [high]
+- File: `app/(dashboard)/salary/employees/[id]/page.tsx:306-310`
+- `f_skatt_status` free dropdown; no Företagsuppgifter API lookup; employer strictly liable.
+- Fix: Add "Verifiera F-skatt mot Skatteverket" action via skatteverket extension; block f_skatt on stale/missing verification.
+
+**P4. Vacation-day range restricted to 25-40 in schema** [medium]
+- File: `lib/api/schemas.ts:659`
+- Hourly workers and short-term contracts need <25 days.
+- Fix: Allow 0 with `salary_type === 'hourly'` bypass.
+
+**P5. sick_day15_plus account mapping implies employer bears cost** [medium]
+- File: `lib/salary/account-mapping.ts:28`
+- Maps day-15+ to 7281; Försäkringskassan pays employee directly; distorts FK499 TotalSjuklonekostnad.
+- Fix: Map to 7210 as unpaid absence, OR split into `sick_day15_plus_employer` (CBA top-up → 7281) vs `sick_day15_plus_fk` (pure reduction → 7210).
+
+**P6. Net deduction line items mapped to 7210 instead of liability accounts** [medium]
+- File: `lib/salary/account-mapping.ts:38-41`
+- Union/advance/other net deductions all → 7210 (wrong); should credit liability/receivable (2890/1680/2690).
+- Fix: Map each net-deduction type to conceptually-correct credit account; couples with the balance fix (P8 area).
+
+**P7. Engångsskatt brackets are approximations, not Skatteverket-published rates** [medium]
+- File: `lib/salary/engangsskatt.ts:25-37`
+- Self-documented "simplified brackets"; state tax kicks in at 660,400 (2026), not simplified 500,000.
+- Fix: Fetch from Skatteverkets open-data API keyed on (year, kommun, annual_income); brackets as fallback.
+
+**P8. No tests for salary-entries.ts (505 lines, 0 tests)** [medium]
+- File: `lib/salary/salary-entries.ts` (production booking code)
+- Critical net-deduction and löneväxling bugs (ticketed) would have been caught.
+- Fix: Cover single-employee basic run, net-deduction balance, löneväxling booking, mixed employment types, `ensureSalaryAccountsExist`.
+
+**P9. AGI FK499 TotalSjuklonekostnad may include wrong amount** [medium]
+- File: `app/api/salary/runs/[id]/agi/xml/route.ts:146-154`
+- Uses `Math.abs(li.amount)`; distinction between sjuklonAmount / totalDeduction / karensavdrag ambiguous.
+- Fix: Store `sjuklon_paid_amount` as separate column; document sign convention.
+
+**P10. Phase 4 work gaps (F-skatt verification UI, tax-table refresh, KU10 delivery)** [medium]
+- File: Project-wide
+- Phase 4 plan partially implemented; verification UI and annual refresh missing.
+- Fix: File tickets for remaining Phase 4 gaps.
+
+### SIE agent
+
+**S1. saveMappings called with user.id instead of companyId** [high]
+- File: `app/api/import/sie/mappings/route.ts:66`
+- `saveMappings(supabase, user.id, mappings)` should be `companyId`. Mappings saved under user UUID in company_id column; won't be readable via GET/PUT/DELETE endpoints in same file.
+- Fix: Change to `saveMappings(supabase, companyId, mappings)`; add round-trip test.
+
+**S2. #TRANS dimension/object-list data silently discarded on import** [high]
+- File: `lib/import/sie-parser.ts:620-627`
+- Object list skipped; no #DIM/#OBJEKT handlers; project/kostnadsställe tags lost during Fortnox/Visma/BL migration.
+- Fix: Add #DIM + #OBJEKT handlers; parse object list into `SIETransactionLine.objects`; map dim=1→cost_center, dim=6→project on journal_entry_lines.
+- 🔁 Possibly tracked by [#243 Projektbaserad](https://github.com/erp-mafia/gnubok/issues/243)
+
+**S3. Export declares #RAR -1 but emits no balances for year -1** [high]
+- File: `lib/reports/sie-export.ts:98-100`
+- Writes #RAR -1 but only emits #IB 0 / #UB 0 / #RES 0. Importers may surface continuity warnings or reject.
+- Fix: Compute and emit #UB -1 / #RES -1, OR omit #RAR -1 when no year -1 balances.
+
+**S4. #TRANS allows missing object list, losing strict-spec detection** [medium]
+- File: `lib/import/sie-parser.ts:625-635`
+- Object list `{}` mandatory per spec; silent skip masks source corruption.
+- Fix: Emit warning when missing; treat as error in strict mode.
+
+**S5. #KSUMMA neither generated on export nor validated on import** [medium]
+- File: `lib/reports/sie-export.ts:217`, `lib/import/sie-parser.ts:662`
+- Tamper detection forfeited; CRC-32 never computed.
+- Fix: Validate on import when present and CP437; optionally emit on export.
+
+**S6. Export declares #FORMAT PC8 but emits UTF-8** [medium]
+- File: `lib/reports/sie-export.ts:82`
+- Strict receivers expecting CP437 will mojibake.
+- Fix: Emit actual CP437-encoded bytes (Uint8Array response).
+
+**S7. #KTYP parsed but ignored during import** [low]
+- File: `lib/import/sie-parser.ts:498-507`
+- Account type hint dropped; edge cases like 1680 (used as liability) lose type information.
+- Fix: Use `accountType` from #KTYP when creating accounts.
+
+**S8. No #ADRESS, #VALUTA SEK, or #KPTYP emitted on export** [low]
+- File: `lib/reports/sie-export.ts:81-100`
+- Compulsory (#VALUTA) / recommended fields missing.
+- Fix: Add `#VALUTA SEK`, `#KPTYP BAS2014`, `#ADRESS` from company_settings.
+
+**S9. #FLAGGA 1 never written on archived import (no anti-duplication)** [low]
+- File: `lib/import/sie-import.ts:1360-1375`
+- Archive leaves #FLAGGA 0 → usable elsewhere as if never imported.
+- Fix: Rewrite first #FLAGGA 0 to 1 in content before storage upload.
+
+**S10. Tab-prefixed #TRANS on export is non-standard** [low]
+- File: `lib/reports/sie-export.ts:186`
+- Some strict parsers reject indented record labels.
+- Fix: Drop leading tab for maximum interop.
+
+**S11. Voucher balance check uses 0.01 SEK tolerance** [low]
+- File: `lib/import/sie-parser.ts:378-386`
+- 0.01 is smallest non-zero; unbalanced-by-1-öre sources slide through silently.
+- Fix: Tighten check to >0.005 or emit warning.
+
+**S12. Unknown-tag info spam for common tags** [low]
+- File: `lib/import/sie-parser.ts:660-664`
+- Info-level noise ("Okänd tagg: #DIMENSION") on standard SIE4 files.
+- Fix: Extend ignore list; add #DIM/#OBJEKT handlers (also fixes S2).
+
+**S13. No detection of SIE4I (subsystem imports with empty series/verno)** [low]
+- File: `lib/import/sie-parser.ts:337-345`
+- `checkDuplicatePeriodImport` wrongly blocks additive 4I imports.
+- Fix: Detect by empty #VER series or absence of #KONTO; skip period-duplicate check.
+
+**S14. Import rejects #FLAGGA 1 files with warning, but doesn't block** [low]
+- File: `lib/import/sie-parser.ts:728-731`
+- Accepts already-imported file as warning only.
+- Fix: Surface #FLAGGA 1 as validation error requiring explicit user override flag.
+
+### SRU agent
+
+**SR1. NE-bilaga amount formatter uses Math.round — violates SFL 22:1** [high]
+- File: `lib/reports/ne-bilaga/sru-generator.ts:166-168`
+- SFL 22 kap. 1 § mandates öre truncated toward zero (INK2 generator correctly uses `Math.trunc`).
+- Fix: Replace with `Math.trunc(amount).toString()`.
+
+**SR2. NE-bilaga field code 7000 for fiscal year range is malformed** [high]
+- File: `lib/reports/ne-bilaga/sru-generator.ts:77-81`
+- Emits `#UPPGIFT 7000 20250101-20251231` (single hyphen-joined range); spec requires separate 7011/7012 lines. 7000 not a valid SRU field.
+- Fix: Emit `#UPPGIFT 7011 <startYYYYMMDD>` and `#UPPGIFT 7012 <endYYYYMMDD>` separately. Remove `formatSRUDateRange`.
+
+**SR3. NE-bilaga BLANKETT type has no year/period suffix** [high]
+- File: `lib/reports/ne-bilaga/sru-generator.ts:65`
+- Emits `#BLANKETT NE`; spec requires `#BLANKETT NE-<year><Px>` (e.g. NE-2024P4). SKV will reject as invalid blankett type.
+- Fix: Derive incomeYear + Px; concatenate.
+
+**SR4. NE-bilaga #IDENTITET missing timestamp, wrong format** [high]
+- File: `lib/reports/ne-bilaga/sru-generator.ts:67-75`
+- Spec requires `#IDENTITET <OrgNr> <YYYYMMDD> <HHMMSS>`; org number not guaranteed 12-digit. NE-bilaga is typically filed by a fysisk person — format should be YYYYMMDDNNNK (personnummer without hyphen), not century-prefixed.
+- Fix: Emit proper format with date + time; don't prepend century 16 for EF; add `formatPersonOrPJuridNumber(orgNumber, entityType)` helper.
+
+**SR5. NE-bilaga block is missing #NAMN and #FIL_SLUT** [high]
+- File: `lib/reports/ne-bilaga/sru-generator.ts:50-116`
+- No `#NAMN <taxpayer name>` inside blankett block; no `#FIL_SLUT` terminator. Missing #FIL_SLUT is on SKV's Level 1 rejection list.
+- Fix: Add #NAMN after #IDENTITET; append #FIL_SLUT as last line.
+
+**SR6. SIE export writes wrong SRU codes in #SRU records** [high]
+- File: `lib/reports/sie-export.ts:126-128`
+- `#SRU <account> <sru_code>` uses seeded codes directly; inherits the obsolete/wrong codes from migration.
+- Fix: Fix seeded codes (critical, already ticketed) OR compute correct INK2R code at export from `INK2R_ACCOUNT_MAPPINGS`.
+
+**SR7. computeSRUCode() uses legacy/incorrect ranges** [high]
+- File: `lib/bookkeeping/bas-data/sru-mapping.ts:17-107`
+- Returns legacy codes (7201/7202/7203/7210-7212/7220-7231/7310-7380) that don't match current INK2R räkenskapsschema.
+- Fix: Rebuild against current INK2R table; for juridiska personer use `INK2R_ACCOUNT_MAPPINGS`; verify NE codes for enskilda firmor against current spec.
+
+**SR8. INK2R mapping covers BAS 4500-4599 and 4700-4899 but self-describes as "no standard SRU mapping"** [medium]
+- File: `lib/reports/ink2/ink2-engine.ts:464-471,819-822`
+- Code commits to 7511 while comment claims the opposite. BAS recommends 7513 for sidokostnader.
+- Fix: Split into 7513 if sidoposter; document choice explicitly; warn in INK2 view on non-zero balances.
+
+**SR9. BAS 2300-2319 mapped to 7350 (Obligationslån) — over-broad** [medium]
+- File: `lib/reports/ink2/ink2-engine.ts:317-319`
+- 7350 should only cover 2320-2329; 2300-2319 are kreditinstitutskulder → 7352.
+- Fix: Move range to new 7352 entry alongside existing 2340-2359.
+
+**SR10. BAS 2100-2109 folded into 7321 (Periodiseringsfonder) — may overlap säkerhetsreserv** [medium]
+- File: `lib/reports/ink2/ink2-engine.ts:268-271`
+- 2100-2109 can be custom obeskattad reserv (säkerhetsreserv i försäkringsbolag); spec maps such reserves to 7323.
+- Fix: Remove 2100-2109 from 7321; fold into existing 7323 entry (with 2130-2149 and 2160-2199).
+
+**SR11. INK2 7651 emitted even when tax booked (ej avdragsgill)** [medium]
+- File: `lib/reports/ink2/ink2-engine.ts:883-902`
+- Auto-derivation assumes 100% of booked tax flows into 7651; ignores periodiseringsfond/koncernbidrag/representation/ränteavdrag.
+- Fix: Expose editable INK2S form with fields 7650-7770 OR surface blocking warning listing unhandled adjustments before SRU download.
+- 🔁 Possibly tracked by [#193 INKS2 balanserar inte](https://github.com/erp-mafia/gnubok/issues/193)
+
+**SR12. INK2 7113/7114 derived from bookkeeping result + tax — missing INK2S round-trip** [medium]
+- File: `lib/reports/ink2/ink2-engine.ts:883-891`
+- Per spec 7113/7114 must equal INK2S 8020/8021; computed independently; future divergence risk.
+- Fix: Compute taxableResult once in INK2S; derive 7113/7114 FROM ink2s['8020']/['8021']. Test asserting equality.
+
+**SR13. computePeriodSuffix cannot produce P3** [medium]
+- File: `lib/reports/ink2/sru-generator.ts:35-43`
+- Short first fiscal year silently falls back to P4; rejected with "Invalid blankett type string".
+- Fix: Track `period_type` / `is_short_year` in fiscal_periods; select P3 when under 12 months. Or expose picker in UI.
+
+**SR14. No validation of company postal_code / org_number before SRU generation** [medium]
+- File: `lib/reports/ink2/sru-generator.ts:99-120`
+- Silently writes '000000000000' or '00000'; SKV rejects Level 2 with no UI warning.
+- Fix: Validate at generation time; return 400 Swedish: "Organisationsnummer saknas — fyll i under Inställningar > Företag".
+
+**SR15. No parsing/handling of Skatteverket validation response** [medium]
+- File: `app/api/reports/ink2/route.ts`; entire repo
+- User downloads ZIP, manually uploads; no mottagningskvittens parsing, no submission-id → period-id status store.
+- Fix: Future Skatteverket extension to POST and parse receipt.
+- 🔁 Possibly tracked by [#107 Skatteverket API](https://github.com/erp-mafia/gnubok/issues/107)
+
+**SR16. INK2 UI and engine silently ignore failure to map account 8999** [low]
+- File: `lib/reports/ink2/ink2-engine.ts:774-775`
+- Only literal string `'8999'` check; class 9 silently dropped.
+- Fix: Configurable skip list; unconditional warn on unmapped accounts.
+
+**SR17. Amount truncation applied twice (engine + sru-generator)** [low]
+- File: `lib/reports/ink2/ink2-engine.ts:632-636`; `sru-generator.ts:89-92`
+- No-op for integers; unclear for reviewer; future float input could hide rounding bug.
+- Fix: Remove `Math.trunc` from `formatAmount`; assert integer input or centralize truncation.
+
+**SR18. No handling of N9 ränteavdragsbegränsningar anywhere** [low]
+- File: entire repo (no matches)
+- Only matters for companies with net interest costs >5 MSEK.
+- Fix: Document as out of scope; refer affected users to accountant.
+
+**SR19. Hard-coded "Okänd" postort placeholder** [low]
+- File: `lib/reports/ink2/sru-generator.ts:120`
+- Silently masks data-quality issue.
+- Fix: Reject SRU generation when any mandatory INFO.SRU post missing; Swedish user-facing error. Don't substitute placeholders.
+
+### Year-end agent
+
+**YE1. Year-end closing entry bypasses account 8999 (Årets resultat)** [high]
+- File: `lib/core/bookkeeping/year-end-service.ts:299-360`
+- Zeros class 3-8 directly to 2099 (AB) or 2010 (EF); standard Swedish practice nets P&L to 8999 first, then 8999 → 2099/2019. Inconsistent with SIE4 export conventions.
+- Fix: Build two-leg close: (a) zero class 3-8 against 8999; (b) move 8999 balance to 2099 (AB) or 2019 (EF).
+
+**YE2. Enskild firma year-end credits 2010 directly instead of 2019** [high]
+- File: `lib/core/bookkeeping/year-end-service.ts:283-287`
+- EF closing should post to 2019 "Årets resultat"; only next-year opening consolidates 2011-2019 into 2010.
+- Fix: Use 2019; add separate new-year opening step consolidating 2011-2019 into 2010 on period_start of next FY.
+
+**YE3. Resultatdisposition chain (2099→2098→2091) for AB not implemented** [high]
+- File: `lib/core/bookkeeping/year-end-service.ts:446-482` (absent)
+- 2099 permanently accumulates each year's result; no bolagsstämma / utdelning flow anywhere.
+- Fix: On next-period creation, post `Debit 2099 / Credit 2098`; expose "Bokför resultatdisposition" UI action generating 2098 → 2091 / 2898.
+
+**YE4. NE-bilaga covers only R1-R11; R14/B1-B22/R15-R46 missing** [high]
+- File: `lib/reports/ne-bilaga/types.ts:1-14`, `ne-engine.ts:42-128`
+- Real NE-bilaga 2161 requires R12/R13 (avgifter/pension), R14 (bokfört resultat), B1-B22 (balance sheet), R15-R46 (skattemässiga justeringar). Code reuses R11 for "Årets resultat" while actual R11 is depreciation.
+- Fix: Extend `NEDeclarationRutor` to match official blankett; fix R11/R14 mapping.
+
+**YE5. No bokslutstransaktioner driven before closing (depreciation, accruals, tax provision, SLP, periodiseringsfond)** [high]
+- File: `lib/core/bookkeeping/year-end-service.ts:27-262`
+- Validation only checks balance/drafts/gaps/continuity/FX; no pre-close prompts for required bokslut phases.
+- Fix: Add pre-closing "bokslutsplan" step with per-phase checklists and generators.
+
+**YE6. Periodiseringsfond cap is not enforced and not calculated** [high]
+- File: (no implementation)
+- AB 25% cap, EF 30%, 6-year reversal — all absent. BAS accounts exist but no validation.
+- Fix: Add `periodiseringsfonder` table keyed by year; validate 25% cap at year-end; emit 6-year reversal deadlines.
+
+**YE7. executeYearEndClosing is not transactional — half-closed state on failure** [high]
+- File: `lib/core/bookkeeping/year-end-service.ts:403-523`
+- 8-step sequence across separate DB calls; mid-flight failure leaves partial state (revaluation committed but no closing entry; period locked with no next period; OB in next period with failed continuity check).
+- Fix: Wrap sequence in single RPC; advisory lock on fiscal period; atomic rollback on continuity failure.
+
+**YE8. entity_type defaults silently to 'aktiebolag' — wrong closing account for EF** [high]
+- File: `lib/core/bookkeeping/year-end-service.ts:282`
+- `const entityType = settings?.entity_type ?? 'aktiebolag'`; EF with missing settings would post to non-existent 2099.
+- Fix: Fall back to `companies.entity_type` (NOT NULL) if settings missing; throw if both null.
+
+**YE9. TOCTOU between validateYearEndReadiness and closing entry creation** [medium]
+- File: `lib/core/bookkeeping/year-end-service.ts:410-453`
+- Concurrent writes between validation (line 410) and close (line 446) can miss entries; preview hash not captured for idempotency.
+- Fix: Hash-based idempotency token on POST; advisory lock on fiscal period for duration of RPC.
+
+**YE10. No depreciation automation; no inventarieregister** [medium]
+- File: (no implementation)
+- Phase 3 depreciation postings must be manual; no räkenskapsenlig 30%/20% vs restvärde 25% choice.
+- Fix: Out of scope (asset module); readiness check should at minimum warn on 12xx activity without 78xx counterpart.
+
+**YE11. lockPeriod has business check for un-bookkept transactions, not un-booked supplier/customer invoices or receipts** [medium]
+- File: `lib/core/bookkeeping/period-service.ts:38-51`
+- Only checks uncategorized bank transactions; draft invoices / unmatched receipts / unreconciled bank accounts pass.
+- Fix: Add checks for registered-but-unposted supplier_invoices, draft invoices, unmatched receipts, unreconciled 1930.
+
+**YE12. Year-end UI is "Coming soon" stub** [medium]
+- File: `app/(dashboard)/bookkeeping/year-end/page.tsx:7-37`
+- Feature gated behind API access; no guided flow, no preview, no validation surface.
+- Fix: Build UI per closing-process phases 1-8 (reconciliations → accruals → depreciation → inventory → untaxed reserves → tax provision → resultatdisposition → final close).
+
+**YE13. INK2 auto-derivation ignores periodiseringsfond/överavskrivningar for taxable result** [medium]
+- File: `lib/reports/ink2/ink2-engine.ts:881-891`
+- `taxableResult = resultAfterFinancial + taxAmount` ignores all skattemässiga justeringar.
+- Fix: Populate 7113/7114 from user-entered INK2S values (not auto-derive); OR add full INK2S ruta codes to type and compute correctly.
+
+**YE14. No validation EF closing doesn't touch AB-only reserved accounts (2110-2129, 2150-2159, 2512)** [medium]
+- File: `lib/core/bookkeeping/year-end-service.ts:303-331`
+- EF mistakenly posting to periodiseringsfond carried forward without warning.
+- Fix: In `validateYearEndReadiness` for EF, warn on any posted balance in AB-only ranges; suggest reversal.
+
+**YE15. resultAccountSummary uses unrounded balances; may diverge from closing lines** [low]
+- File: `lib/core/bookkeeping/year-end-service.ts:308-331`
+- UI shows sub-öre differences from posted amounts.
+- Fix: Round summary amounts the same way: `Math.round(netBalance * 100) / 100`.
+
+**YE16. Readiness check silently allows closing period with zero posted entries** [low]
+- File: `lib/core/bookkeeping/year-end-service.ts:201-211`
+- Warning-then-throw mismatch; confusing "No result accounts to close" error despite activity.
+- Fix: Make "no activity" a hard error at validation OR allow closing with rolled-forward balances only, skipping the closing entry.
+
+**YE17. previewYearEndClosing computes netResult but never uses it** [low]
+- File: `lib/core/bookkeeping/year-end-service.ts:290-291`
+- No cross-check between income statement and implicit closing balance.
+- Fix: Compare netResult against implicit balancing amount; warn (or block) on divergence.
+
+**YE18. No reopen / undo path for year-end closing** [low]
+- File: (no implementation)
+- Misskapad bokslut requires manual SQL intervention; `enforce_opening_balance_immutability` + `enforce_journal_entry_immutability` block ordinary recovery.
+- Fix: Provide "öppna om bokslut" admin action: storno closing entry + unlock period + delete OB entry in next period + audit log.
+
+**YE19. createNextPeriod always forces 12-month periods — no fiscal-year change support** [low]
+- File: `lib/core/bookkeeping/period-service.ts:152-169`
+- Ignores BFL 3 kap. 3 § (6-18 months transition year after SKV approval).
+- Fix: Accept optional `nextPeriodMonths` parameter (bounded 6-18).
+
+**YE20. Executed year-end closing uses voucher_series 'A' — not a dedicated bokslut series** [low]
+- File: `lib/core/bookkeeping/year-end-service.ts:451`
+- Swedish practice uses dedicated series (commonly 'B' or 'I'); mixing complicates voucher-gap analysis.
+- Fix: Use configurable bokslut series (default 'B'); seed voucher_sequences row for (company, period, 'B') before creating closing entry.
+
+### Asset-accounting agent
+
+*Note: the entire fixed-asset module is missing and has been filed as critical tickets #100-104. The following findings refine scope.*
+
+**AA1. Förbrukningsinventarier threshold (half PBB) not enforced programmatically** [high]
+- File: `lib/bookkeeping/booking-templates.ts:1306-1322` (`equipment_consumable`) and `:1323-1346` (`equipment_capital`)
+- Per IL 18 kap. 4 §: threshold 29,600 SEK (2026) + grouping rule. Classification depends on user-chosen template; 40k SEK laptop silently expensed.
+- Fix: On transaction/supplier-invoice lines landing on 5410/5411/5412, compare `amount_ex_vat` to `prisbasbelopp / 2`; warn over-threshold; sum same-supplier-same-day-same-account for grouping.
+
+**AA2. Komponentavskrivning (K3) not supported; K2/K3 gate absent** [high]
+- File: `lib/assets/components.ts` (missing)
+- K3 (BFNAR 2012:1 17.4-17.5) mandates component depreciation; from 2026 fastighetsbolag/BRF must use K3. No asset register so component absent.
+- Fix: When asset module is built, include component decomposition with per-component fields; gate K2 vs K3 on company.
+
+**AA3. No jämkning of input VAT on capital goods** [high]
+- File: `lib/vat/jamkning.ts` (missing)
+- ML 15 kap correction unenforceable without asset register (buildings 10yr/≥100k, maskiner 5yr/≥50k).
+- Fix: As part of asset register schema, store `acquisition_input_vat_amount` per asset; offer jämkning posting on disposal or business-use change.
+
+**AA4. equipment_capital template dead-ends — no follow-through** [high]
+- File: `lib/bookkeeping/booking-templates.ts:1323-1346`
+- Books `Dr 1250 / Cr 1930` but asset invisible to system afterward; no register entry; no year-end depreciation reminder. `special_rules_sv` mentions 7832 but nothing posts automatically.
+- Fix: Prompt user to create inventarieregister entry (or auto-seed draft from transaction); don't let 12xx grow without linked asset record.
+
+**AA5. No handling of finansiell leasing (K3) — capitalization path missing** [medium]
+- File: `lib/bookkeeping/booking-templates.ts:204-225`; `app/api/assets/leases/**` (missing)
+- K3 BFNAR 2012:1 kap. 20 IAS 17 classification absent. K3 20.29 juridisk person exemption undocumented. 2024 Skatteverket VAT ställningstagande on finansiell leasing-as-goods not reflected.
+- Fix: Document K2-only scope in templates. For K3 capitalization: add leasingavtal entity with effective-interest payment split, ROU depreciation, and VAT rule change flag.
+
+**AA6. Reporting paths for 78xx exist but cannot be populated** [low]
+- File: `lib/reports/ne-bilaga/ne-engine.ts:112-127`; `ink2-engine.ts:278,593-597`; `balance-sheet.ts:28-30`
+- Report infrastructure is a partial shell without the engine.
+- Fix: Fixed indirectly by building the asset module (critical tickets).
+
+### Financial-reporting agent
+
+**FR1. No årsredovisning document generator (förvaltningsberättelse, noter, signatures)** [high]
+- File: `app/(dashboard)/bookkeeping/year-end/page.tsx:25-27` + absent generators
+- No förvaltningsberättelse, noter, underskriftssida, or fastställelseintyg. PDF is explicitly "Arbetsutkast — ej undertecknat".
+- Fix: Build template + noter generator + signature manifest (`styrelseledamoter` table prerequisite) OR document scope as "bokföringsverktyg".
+
+**FR2. Balance sheet does not split bundet/fritt eget kapital** [high]
+- File: `lib/reports/balance-sheet.ts:45-47`
+- ÅRL 3:10a-10b § and K2 4.7 require AB to split EK. Uses single `'20': 'Eget kapital'` bucket.
+- Fix: Replace `'20'` entry with two: Bundet (2010-2089) and Fritt (2090-2099).
+
+**FR3. No K2/K3 accounting framework persistence** [high]
+- File: `supabase/migrations/20240101000001_core_schema.sql:63-94`, `types/index.ts`
+- No `accounting_framework` column. K2/K3 distinction materially changes format, noter, depreciation, allowed assets.
+- Fix: Add `accounting_framework text check in ('k2','k3','k_ifrs')` to company_settings; default 'k2' for AB; ask during onboarding; branch K2-specific restrictions.
+
+**FR4. Lämnade gottgörelser mapped into INK2R as Avsättning periodiseringsfond** [high]
+- File: `lib/reports/ink2/ink2-engine.ts:585-591`
+- BAS 8840 maps to SRU 7525 (wrong; gottgörelser are separate bokslutsdisposition).
+- Fix: Re-map 7525 to BAS 8811; route 8840 to SRU 7422 (or accept out of scope).
+
+**FR5. INK2S skattemässiga justeringar exposes only 4.1/4.2/4.3a/4.15/4.16** [high]
+- File: `lib/reports/ink2/ink2-engine.ts:893-902`
+- Missing 4.3b (SRU 7652), 4.3c (7653), 4.6a schablonintäkt (7654), 4.6d (7667), 4.7f aktiefållan (7757), 4.14a underskott (7763). taxableResult wrong for any AB with periodiseringsfond/representation/nedskrivning/underskott.
+- Fix: Add editor for INK2S fields with BAS-suggested defaults OR zero out INK2 p. 1.1/1.2 with blocking warning.
+
+**FR6. INK2 p. 1.4 (SLP) never populated** [medium]
+- File: `lib/reports/ink2/types.ts:95-100`
+- SLP rate 24.26% on pension costs (BAS 7410-7419); never computed.
+- Fix: Add fields to INK2Rutor; sum pensionspremier; compute SLP = base × 0.2426; allow override; warn on pensionskostnader with zero SLP.
+
+**FR7. No Bolagsverket filing / förseningsavgifter / iXBRL** [medium]
+- File: `lib/tax/deadline-config.ts:242-289` (deadline only)
+- Förseningsavgifter escalation, tvångslikvidation warnings, iXBRL generator, fastställelseintyg, Bolagsverket API — all absent.
+- Fix: Scope decision — document as non-goal OR implement iXBRL + fastställelseintyg + filing flow.
+
+**FR8. Kassaflödesanalys generator absent** [medium]
+- File: (absent from `lib/reports/`)
+- Mandatory for K3 större and brf per ÅRL 2:1 § and SFS 2022:1028.
+- Fix: Lower priority for K2 target. For K3/större: implement indirekt metod.
+
+**FR9. No revisionsplikt computation / tracking** [medium]
+- File: (absent)
+- ABL 9:1 § thresholds uncomputed; audit-required companies file without revisionsberättelse.
+- Fix: Add `requires_audit` + `auditor_name` to company_settings; auto-compute from KPI (two of three thresholds); dashboard warning on transition.
+
+**FR10. Income statement uses non-ÅRL rubriker** [low]
+- File: `lib/reports/income-statement.ts:30`
+- `'Huvudintäkter'` instead of ÅRL's `'Nettoomsättning'`; K2 uppställningsform review would fail.
+- Fix: Rename rubriker to ÅRL Bilaga 2 exact wording.
+
+**FR11. Balance sheet kortfristiga skulder conflates trade payables** [low]
+- File: `lib/reports/balance-sheet.ts:52-55`
+- Lumps leverantörsskulder (2440) with förskott (2420) and checkräkningskredit (2410) into single "Kortfristiga skulder" row.
+- Fix: Replace `'24'` prefix with 2410/2420/2440/2450/2460/2470/2480/2490 splits matching INK2R mapping.
+
+### Tax-planning agent
+
+**TP1. No periodiseringsfond planner (cap + schablonintäkt + 6-year auto-reversal)** [high]
+- File: `lib/tax/` (absent)
+- 25% cap uncomputed; 6-year auto-reversal untracked; schablonintäkt (SLR × avsättning) never calculated.
+- Fix: Add `lib/tax/periodiseringsfond.ts` with `calculateMaxPeriodiseringsfondAB`, FIFO reversal tracker, `calculateSchablonintakt`. Surface on year-end wizard.
+
+**TP2. No överavskrivningar planner (2150/8850 slack vs plan)** [high]
+- File: `lib/tax/` + `lib/bookkeeping/engine.ts` (no asset register hooks)
+- No 30-regeln / 20-regeln calculator showing headroom.
+- Fix: Add `lib/tax/overavskrivningar.ts`; depends on asset register.
+
+**TP3. Koncernbidrag validation absent** [high]
+- File: `lib/bookkeeping/engine.ts` (BAS 8810/8820 postings unchecked)
+- No IL 35 kap enforcement: ≥90% ownership, direct/indirect chain, K2/K3 consistency, underskottsspärr. No koncern data model.
+- Fix: Modal on 8810/8820 postings asking counterparty + ownership + documentation; `company_relationships` table for automation.
+
+**TP4. 3:12-reglerna entirely absent** [high]
+- File: `lib/tax/famansbolag/` (absent)
+- No gränsbelopp, förenklingsregeln, löneunderlag, K10, sparat utdelningsutrymme. Most important tool for target fåmansbolag user.
+- Fix: Build `famansbolag/` module with K10 tracker + löneunderlag validator + optimization; shareholders table + settings page.
+
+**TP5. 2026 3:12 reform not addressed** [high]
+- File: `lib/tax/` (absent since 3:12 absent)
+- Regeringen's 2026 reform changes löneunderlag / gränsbelopp / lönekrav.
+- Fix: Key the rule table by fiscal year in whatever 3:12 module is built.
+
+**TP6. No fåmansbolag detection (≤4 owners holding ≥50%)** [medium]
+- File: `types/index.ts` (no shareholder fields)
+- IL 56:2 test can't be evaluated.
+- Fix: Add `shareholders` table; derive `is_famansbolag` from DB view/function.
+
+**TP7. No ränteavdragsbegränsningar calculator (EBITDA 30% + 5 MSEK + N9)** [medium]
+- File: `lib/tax/` (absent)
+- IL 24:21-29 limitation uncomputed; no N9 generator; carry-forward up to 6 years untracked.
+- Fix: Add `lib/tax/ranteavdrag.ts` with taxEbitda computation; warn as 8400-8499 approaches 5 MSEK.
+
+**TP8. No lön vs utdelning optimization (brytpunkt, "max utdelningsutrymme")** [medium]
+- File: `app/(dashboard)/salary/` + `lib/tax/famansbolag/optimization.ts` (absent)
+- Most common fåmansbolag question unanswered.
+- Fix: Add `optimization.ts` with `recommendedLonForMaxUtdelningsutrymme`; show on salary settings for AB users.
+
+**TP9. Year-end service has no planning scenarios (preview before vs after of bokslutsdispositioner)** [medium]
+- File: `lib/core/bookkeeping/year-end-service.ts:268-390`
+- `previewYearEndClosing` returns single netResult; no variability analysis.
+- Fix: Add `year-end-planner.ts` returning N scenarios (no disposition / max periodiseringsfond / max + överavskrivning) with bolagsskatt impact per scenario.
+
+**TP10. Tax calculator is unused dead code (not wired into any UI or API)** [medium]
+- File: `lib/tax/calculator.ts:69,129`
+- `calculateEFTax` / `calculateABTax` imported nowhere. Also simplistic — ignores arbetsgivaravgifter / periodiseringsfond / estimated slutlig skatt.
+- Fix: Delete OR wire into "Beräknad skatt" card after filling gaps.
+
+**TP11. No kapitalförsäkring-i-bolaget warning** [low]
+- File: `lib/bookkeeping/bas-data/class-1-assets.ts:1359` (account exists, no guard rail)
+- No notice when premium booked as personalkostnad; no check on excluded income.
+- Fix: Add expense-warnings rule flagging premium booked to 7xxx instead of 138x.
+
+### Project-accounting agent
+
+*Most findings below possibly tracked by [#243 Projektbaserad](https://github.com/erp-mafia/gnubok/issues/243).*
+
+**PA1. No project or cost-center CRUD endpoints or UI** [high]
+- File: `app/api/` (no `projects/` or `cost-centers/` subdirectory)
+- Tables exist (`supabase/migrations/20240101000015_dimensions.sql:7-68`) and types exist (`types/index.ts:2095-2117`) but no API or dashboard page. Only reader is SIE export.
+- Fix: Add `/api/projects/*` and `/api/cost-centers/*` CRUD routes + settings page.
+
+**PA2. No UI to tag journal entries, invoices, or expenses with project/cost_center** [high]
+- File: `app/(dashboard)/bookkeeping/[id]/page.tsx`, `components/` (no dimension-picker)
+- `journal_entry_lines.cost_center/project` engine-accepted but never populated by app-created entries.
+- Fix: Add dimension picker to journal entry line editor, invoice line items, supplier invoice line items, categorization drawer, expense form.
+
+**PA3. SIE import discards #TRANS object list** [high] (dupes SIE S2)
+- File: `lib/import/sie-parser.ts:625-627`
+- Fortnox/Visma/Bokio migration strips project/cost-center tags.
+- Fix: Parse #DIM/#OBJEKT + object list; map to journal_entry_lines during import.
+
+**PA4. No project-filtered reports** [medium]
+- File: `lib/reports/` (no filters)
+- Reports don't accept project_id/project_code/cost_center parameter.
+- Fix: Add optional `projectCode`/`costCenterCode` filters to general-ledger, trial-balance, income-statement, monthly-breakdown. Per Srf U 14 kvittningsförbud project BS views must be reported gross per project.
+
+**PA5. No WIP / pågående arbeten posting logic** [medium]
+- File: `lib/bookkeeping/` (no WIP module); `lib/core/bookkeeping/` (no service)
+- BAS 1470/1620/2420/2450/4970 exist but no code books; färdigställandegrad absent; befarade förluster (K3 BFNAR 2012:1 23.32) unmodeled.
+- Fix: Year-end closing step for WIP entries; `project_contracts` table with cumulative-cost + invoiced-amount tracking.
+
+**PA6. Engine entry generators don't propagate project or cost center** [medium]
+- File: `lib/bookkeeping/invoice-entries.ts`, `supplier-invoice-entries.ts`, `transaction-entries.ts`, `vat-entries.ts`, `lib/salary/salary-entries.ts`
+- Engine `buildLineInserts` passes through when given, but upstream generators never set the fields. `SalaryRunEmployee.cost_center/project` declared but never read.
+- Fix: Propagate on revenue/cost/wage lines; leave VAT lines null.
+
+**PA7. Invoice items and expenses have no project column** [medium]
+- File: `supabase/migrations/20240101000001_core_schema.sql:246-256`; `supplier_invoices.sql:190`
+- No way to associate line to project before journal entry generation.
+- Fix: Add `project_id uuid references projects(id)` + `cost_center_id` to invoice_items, supplier_invoice_items, expenses.
+
+**PA8. cost_centers / projects tables nearly identical, no SIE dimension number** [low]
+- File: `supabase/migrations/20240101000015_dimensions.sql:7-68`
+- Neither carries dimension number; export hardcodes dim 1 / dim 6.
+- Fix: Add `dimension_number int not null default 1`/`default 6`; optional `cost_center_id uuid` FK on projects.
+
+**PA9. Dimension string columns unconstrained to known codes** [low]
+- File: `supabase/migrations/20240101000011_alter_existing_tables.sql:58-64`
+- Free-text columns on journal_entry_lines; typos land in immutable posted entries; SIE import accepts undefined codes.
+- Fix: Validation trigger (company-scoped) OR migrate to FK columns with ON DELETE SET NULL.
+
+### Bookkeeping-engine agent
+
+**BE1. reverseEntry and correctEntry reserve voucher numbers that become undocumented gaps on cleanup** [high]
+- File: `lib/bookkeeping/engine.ts:378-462`, `lib/core/bookkeeping/storno-service.ts:81-268`
+- Pre-reserve + INSERT + post-UPDATE pattern; failure leaves sequence increment + no `voucher_gap_explanations` row. Violates BFNAR 2013:2 punkt 5.8 and blocks year-end readiness.
+- Fix: Rework to use `commit_journal_entry` RPC pattern (atomic), OR insert `voucher_gap_explanations` row on every cancel branch per mark-paid convention.
+
+**BE2. reverseEntry places reversal in original.fiscal_period_id with entry_date outside that period** [high]
+- File: `lib/bookkeeping/engine.ts:375,403-404`; `lib/core/bookkeeping/storno-service.ts:96,193`
+- Reversal today on 2024 entry lands with entry_date=2026-04-22 but fiscal_period_id=2024. Violates BFL 5 kap 1§.
+- Fix: Place reversal in period containing `entryDate` via `findFiscalPeriod`; fail if no open period covers it.
+
+**BE3. correctEntry emits journal_entry.corrected but never journal_entry.committed** [medium]
+- File: `lib/core/bookkeeping/storno-service.ts:289-298`
+- Extensions subscribed to `.committed` miss correction-induced postings (inconsistent with reverseEntry emitting both).
+- Fix: Also emit `.committed` twice from correctEntry OR document `.corrected` as compound superseding event.
+
+**BE4. Sandbox seed bypasses the engine with a comment that invites the pattern** [medium]
+- File: `app/api/sandbox/seed/route.ts:295-351`
+- Direct `status: 'posted'` inserts + hand-picked voucher numbers; comment "inserted directly, not via engine, to avoid event emission" normalizes anti-pattern.
+- Fix: Route through `createJournalEntry` with `sandbox: true` flag that handlers ignore. Remove "avoid event emission" justification.
+
+**BE5. PATCH /journal-entries/[id]/notes accepts posted entries; outcome depends on trigger version** [medium]
+- File: `app/api/bookkeeping/journal-entries/[id]/notes/route.ts:32-36`
+- Works today because schema_sync trigger whitelists notes; breaks if earlier trigger version is deployed (forks, downgrades, self-hosted).
+- Fix: Add explicit status check; document dependency in comment.
+
+**BE6. mark-paid routes create entry, then payment; failure leaves orphaned posted entry** [medium]
+- File: `app/api/supplier-invoices/[id]/mark-paid/route.ts:165-181`
+- Three-step sequence: entry → status CAS → payment insert. Step 3 failure silently succeeds; reverseEntry lookup later no-ops on amount sync.
+- Fix: Insert payments row first, OR wrap in DB RPC, OR storno entry on step 3 failure. At minimum return 500.
+
+**BE7. Mapping rule regex uses user-provided patterns with no catastrophic-backtracking guard** [medium]
+- File: `lib/bookkeeping/mapping-engine.ts:160,175`
+- ReDoS on every categorization; `mapping_rules` is user-writable.
+- Fix: Validate at rule-create time (reject nested quantifiers) OR use safe regex engine OR cap execution via worker with timeout.
+
+**BE8. Mapping rule priority tie results in "first row returned" — not deterministic** [low]
+- File: `lib/bookkeeping/mapping-engine.ts:64`
+- Two rules with equal priority return in Postgres storage order; can produce different categorizations across calls.
+- Fix: `.order('priority', asc).order('created_at', asc)` as tiebreaker.
+
+**BE9. template-library.applyTemplate writes amounts as strings via toFixed(2)** [low]
+- File: `lib/bookkeeping/template-library.ts:60-61`
+- Output feeds UI form; violates CLAUDE.md guard rail 9 as a pattern.
+- Fix: Keep numbers as numbers in output; convert at UI boundary. Use `Math.round(amount * 100) / 100`.
+
+## Cross-cutting Opus
+
+### Provider-connections agent
+
+**PC1. Invoice reminder cron has no idempotency — duplicate reminders on retry** [high]
+- File: `app/api/invoices/reminders/cron/route.ts:6-45`, `lib/invoices/reminder-processor.ts`
+- Vercel retry duplicates reminders; level-3 "Tredje påminnelse" doubled destroys trust.
+- Fix: Write reminder record before sending with `status: 'pending'`; idempotency key `reminder-{invoiceId}-{level}`; pass Resend `Idempotency-Key` header.
+
+**PC2. Invoice-inbox Resend attachment download has no timeout or size cap** [high]
+- File: `extensions/general/invoice-inbox/lib/resend-inbound.ts:70`
+- Arbitrary provider URL; 1 GB PDF blows memory via `arrayBuffer()`.
+- Fix: 30s timeout; `MAX_DOCUMENT_SIZE` enforcement; streaming abort when bytes exceed cap.
+
+**PC3. Enable Banking callback/sync error messages are English-only** [high]
+- File: `app/api/extensions/enable-banking/callback/route.ts:72,83,105,206`; `extensions/general/enable-banking/index.ts:216,381,435`
+- Raw tokens `bank_error=invalid_state` / `'Sync failed'` surface in Swedish UI.
+- Fix: Map all codes to Swedish in `lib/errors/get-error-message.ts` new `bank_connection` context; consume in settings/banking page.
+
+**PC4. VIES validation error returned to user is English** [high]
+- File: `lib/vat/vies-client.ts:94,105,127,144`
+- English errors via `/api/vat/validate` to customer-creation UI.
+- Fix: Return Swedish; add `canRetry` boolean and `fallbackAccepted` flag for UI behavior.
+
+**PC5. VIES client has no retry on 5xx or transient network errors** [high]
+- File: `lib/vat/vies-client.ts:108-147`
+- Notoriously unstable backends; one-shot + 10s timeout blocks user.
+- Fix: 2-attempt retry with 500ms + jitter for 502/503/504/AbortError. Keep 4xx non-retried.
+
+**PC6. Skatteverket-issued 401/403 errors not surfaced uniformly to client** [high]
+- File: `extensions/general/skatteverket/lib/api-client.ts:140-161`
+- Handlers catch generically with `err.message`; loses `code`; 429 unmapped and hits user as raw response text.
+- Fix: `instanceof SkatteverketAuthError` check in every handler; return `{ error, code }`. Add 429 branch with Swedish retry message.
+
+**PC7. Resend webhook signature verification only fires if RESEND_INBOUND_WEBHOOK_SECRET is set** [high]
+- File: `extensions/general/invoice-inbox/lib/resend-inbound.ts:30-46`
+- Missing secret → 500 every request; no `svix-id` dedup.
+- Fix: `svix_event_ids` table with UNIQUE(svix_id); insert first, conflict returns 200 without processing; fail loudly on startup if secret missing.
+
+**PC8. Google Drive upload has no timeout and uploads entire buffer in RAM** [high]
+- File: `extensions/general/cloud-backup/lib/google-drive.ts:126`
+- Multipart recommended only ≤5 MB; archives grow to 100 MB+; `Buffer.concat` in memory.
+- Fix: 5-min AbortController timeout; switch to resumable uploads for >5 MB via `/upload/drive/v3/files?uploadType=resumable`; stream from source.
+
+**PC9. Enable Banking retry on POST /sessions is not retried** [medium]
+- File: `extensions/general/enable-banking/lib/api-client.ts:340-360`
+- Transient network failure forces user to restart 90-day BankID consent flow.
+- Fix: Single retry on pure network failure (AbortError / TypeError thrown before any response). Don't retry on HTTP errors — `code` is one-time.
+
+**PC10. Riksbanken currency API fallback rates are stale and silent** [medium]
+- File: `lib/currency/riksbanken.ts:107-122`
+- Hard-coded rates (~11.5 SEK/EUR) drift; caller has no signal a fallback was used.
+- Fix: Add `source: 'riksbanken' | 'fallback'` to ExchangeRate; warn UI on fallback; decline automatic booking for large amounts (>10k SEK equivalent).
+
+**PC11. Several provider error paths use console.* instead of structured logger** [medium]
+- File: `extensions/general/enable-banking/lib/api-client.ts:191,206,236,248-488` and others
+- Inconsistent prefixes; no Sentry scope; no level filtering.
+- Fix: Use `createLogger('enable-banking')` and siblings; keep structured metadata.
+
+**PC12. skatteverket_tokens decryption failure silently returns null** [medium]
+- File: `extensions/general/skatteverket/lib/token-store.ts:94-98`
+- `SKATTEVERKET_TOKEN_ENCRYPTION_KEY` rotation masks as "Inte ansluten"; reconnect may loop.
+- Fix: Log warn level on decryption failure; auto-delete undecryptable row OR distinct error `TOKEN_UNREADABLE` surfacing "Återställ anslutning" UI.
+
+**PC13. Enable Banking consent expiry warning only fires in cron** [medium]
+- File: `app/api/extensions/enable-banking/sync/cron/route.ts:125-132`
+- User-triggered "Synka nu" doesn't check expiry; 90-day consent dies silently.
+- Fix: Check `isConsentExpiringSoon` on `/sync` load; surface `consent_expiring_in_days` in response.
+
+**PC14. getSupportedBanks fallback list does not log upstream error** [low]
+- File: `extensions/general/enable-banking/lib/api-client.ts:266-275`
+- Ålands/Norwegian users see Swedish-only fallback silently.
+- Fix: Delete fallback or return `provider_unavailable` error; mark legacy export `@deprecated`.
+
+### Security agent
+
+**SEC1. MCP OAuth grants ALL_SCOPES on every token exchange** [medium]
+- File: `app/api/mcp-oauth/token/route.ts:118`
+- Consent page lists prose permissions; no scope selection; every OAuth key gets write access to everything.
+- Fix: Accept `scope` param; validate against `ALL_SCOPES`; persist into stateless auth code; render checkboxes on consent page; default read-only.
+
+**SEC2. HTML injection in outbound invoice email templates** [medium]
+- File: `lib/email/invoice-templates.ts:21-154`, `reminder-templates.ts`, `invite-templates.ts`, `consent-notification-templates.ts`
+- Interpolates customer.name / company.bank_name etc. without escape. Attacker-owned company can embed phishing links rendered in Swedish customer's email.
+- Fix: Add `escapeHtml()` helper; wrap every interpolated value; reject HTML in input validation for company_settings/customer name.
+
+**SEC3. Two cron endpoints use non-constant-time secret comparison** [medium]
+- File: `app/api/events/cleanup/cron/route.ts:13`, `app/api/extensions/push-notifications/cron/route.ts:25`
+- Plain `!==`; bypasses existing `verifyCronSecret()` helper with `crypto.timingSafeEqual` on SHA-256.
+- Fix: Replace with `verifyCronSecret(request)`.
+
+**SEC4. Error messages leak PostgREST internals to client** [medium]
+- File: `app/api/bookkeeping/journal-entries/route.ts:99` and dozens
+- Raw `error.message` exposes table/column/constraint names.
+- Fix: Route through `getErrorMessage()`; log raw server-side; strip regex of `relation "..." / column "..." / constraint "..." / policy "..."`.
+
+**SEC5. Missing company_id defense-in-depth filter on journal_entry_lines query** [low]
+- File: `app/api/bookkeeping/accounts/[number]/route.ts:45-48`
+- Relies on RLS only; deviates from "belt + suspenders" rule. Count leak if RLS relaxed.
+- Fix: Join through journal_entries explicitly: `.select('id, journal_entries!inner(company_id)').eq('account_number', number).eq('journal_entries.company_id', companyId)`.
+
+**SEC6. Redirect URI host allowlist has localhost permanently open** [low]
+- File: `app/api/mcp-oauth/authorize/route.ts:17-22`, `register/route.ts:5-10`
+- Production accepts `http://localhost` / `127.0.0.1`; widens attack surface combined with malicious local services.
+- Fix: Gate localhost/127.0.0.1 patterns behind `process.env.NODE_ENV === 'development'`.
+
+**SEC7. PDF generation error details leak to client** [low]
+- File: `app/api/invoices/[id]/pdf/route.ts:97-101`
+- @react-pdf/renderer errors include file paths and stack fragments.
+- Fix: Log server-side; return generic Swedish message; include internal id in response header for support.
+
+**SEC8. /api/log endpoint has no auth, no rate limit, writes to Vercel logs** [low]
+- File: `app/api/log/route.ts:3-14`
+- Trivial log bloat / noise vector.
+- Fix: `requireAuth()`; cap body size (8 KiB); per-IP rate limit; Zod validation.
+
+**SEC9. /api/sandbox/seed error message suppression swallows stack** [low]
+- File: `app/api/sandbox/seed/route.ts:526-531`
+- Outer catch{} swallows error; no server-side logs.
+- Fix: `catch (err) { log.error('sandbox seed failed', { err }); ... }`.
+
+**SEC10. TIC BankID start cooldown uses naive x-forwarded-for** [low]
+- File: `extensions/general/tic/index.ts:406-408`
+- Self-hosted reverse-proxy misconfigurations allow spoofing; unlimited billable BankID sessions.
+- Fix: Document self-hosted reverse-proxy requirement; use `CF-Connecting-IP` behind Cloudflare or platform-provided peer address.
+
+**SEC11. middleware.ts config does not run on /api — per-route auth is the only line of defense** [low]
+- File: `middleware.ts:8-22`
+- New route forgetting `requireAuth()` gets no protection.
+- Fix: CI check / grep that every `app/api/**/route.ts` calls `requireAuth()`/`verifyCronSecret()`/`validateApiKey()` or is in an allowlist.
+
+**SEC12. Extension API PATCH /settings deep-merges user-controlled JSON** [low]
+- File: `app/api/extensions/[sector]/[slug]/settings/route.ts:50-77`
+- Object-spread allows user to overwrite any setting key (e.g., `emailTemplate`, `redirectUri`); role check limits to company writers but member role can tamper.
+- Fix: Zod-validate body against extension schema before merging; reject `__proto__`/`constructor`/`prototype` keys; gate settings writes to owner/admin.
+
+### RLS-multitenancy agent
+
+**RLS1. API key auth in /api/events discards the key-bound company_id** [high]
+- File: `app/api/events/route.ts:29-44`
+- Uses `requireCompanyId()` (active_company_id) instead of `authResult.companyId`. External automation with API key scoped to X sees company Y's events after user switch.
+- Fix: Use `authResult.companyId` when token branch fires; audit every other dual-auth endpoint (MCP server, /api/events is outlier).
+
+**RLS2. /api/mcp-oauth/token binds the new API key to the user's current active company** [high]
+- File: `app/api/mcp-oauth/token/route.ts:105`
+- Authorize consents on X; user switches tab to Y; token binds Y. Scope drift across handshake.
+- Fix: Extend `AuthCodePayload` with `companyId`; set at POST time; use `payload.companyId` in /token; re-verify membership at exchange.
+
+**RLS3. Document storage paths keyed by uploader user_id, not company_id** [high]
+- File: `lib/core/documents/document-service.ts:121,194`; `supabase/migrations/20240101000024_storage_bucket_policies.sql:30-52`
+- Teammates can't access colleagues' uploads; BFL räkenskapsinformation blocked. Contrast with sie-files bucket which was correctly updated to `user_company_ids()`.
+- Fix: Switch storage paths to `documents/{company_id}/...`; rewrite RLS to check `(storage.foldername(name))[1]::uuid IN (SELECT user_company_ids())`. Backfill via service role or view unifying both prefixes.
+
+**RLS4. event_log rows written by bus handler have NULL company_id** [medium]
+- File: `lib/events/handlers/event-log-handler.ts:102-109,133-141`
+- persistEvent omits company_id; RLS excludes; /api/events returns zero events. (Also filed as event-bus critical.)
+- Fix: Extract companyId from payload; backfill NULLs via user_id → active_company_id mapping if TTL hasn't swept.
+
+**RLS5. notification_log_select policy reads company_id IS NULL rows — any authenticated user sees them** [medium]
+- File: `supabase/migrations/20260330130000_multi_tenant_company_refactor.sql:775-776`
+- `OR company_id IS NULL` legitimate for shared BAS mappings only; push-notifications currently broken writer creates NULL rows.
+- Fix: Remove `OR company_id IS NULL` from notification_log_select; backfill or purge NULL rows; fix push-notifications sender.
+
+**RLS6. push-notifications extension queries .eq('company_id', userId)** [medium]
+- File: `extensions/general/push-notifications/notification-sender.ts:241,273,286`
+- Wrong filter key; wasNotificationSent returns false (resends every notification); subscriptions empty.
+- Fix: Either revert to `.eq('user_id', userId)` OR migrate `push_subscriptions`/`notification_settings` to company scope and update extension.
+
+**RLS7. Tic BankID signup extension_data upsert uses old onConflict target** [medium]
+- File: `extensions/general/tic/index.ts:669-676`
+- Unique constraint is `(company_id, extension_id, key)`; upsert errors or inserts with NULL `company_id` (NOT NULL column → fails). Onboarding pre-fill breaks.
+- Fix: Defer enrichment caching until company exists OR companyless cache table (`user_signup_data`).
+
+**RLS8. Changing companies.team_id doesn't re-sync company_members** [low]
+- File: `supabase/migrations/20260331010000_teams_table_refactor.sql:252-309`
+- Team A members keep source='team' rows after move; Team B members not auto-added. No UI path exposes this currently but invariant is unsafe.
+- Fix: AFTER UPDATE trigger on companies; delete stale team source rows; call `sync_team_to_company(NEW.id, NEW.team_id)`. Alternately prohibit direct updates, require dedicated RPC.
+
+### Auth-MFA agent
+
+**AM1. Two cron endpoints compare CRON_SECRET with === instead of verifyCronSecret()** [high]
+- File: `app/api/extensions/push-notifications/cron/route.ts:25`, `app/api/events/cleanup/cron/route.ts:13`
+- (Also flagged by security + rate-limits agents.) Once extracted, attacker can trigger events/cleanup or push-spam.
+- Fix: Use `verifyCronSecret()` helper.
+
+**AM2. OAuth token endpoint grants ALL_SCOPES regardless of consent** [high]
+- File: `app/api/mcp-oauth/token/route.ts:118` + `authorize/route.ts:133-138`
+- Consent bullet list silently narrower than actual scopes granted; users unknowingly grant payroll/invoices write.
+- Fix: Accept scope param, render individual toggles, persist through auth code, pass to api_keys.insert. Default read-only.
+
+**AM3. OAuth consent + token exchange reachable on AAL1** [high]
+- File: `app/api/mcp-oauth/authorize/route.ts:86-92,180-187`
+- AAL1 attacker (stolen password, no TOTP) can grant themselves full-scope API key that bypasses MFA forever (API key auth doesn't check AAL).
+- Fix: `requireAuth()` in both GET and POST; require AAL2 on hosted for any flow that issues long-lived credential.
+
+**AM4. /auth/callback honours unvalidated next query parameter — open redirect via protocol-relative URL** [medium]
+- File: `app/(auth)/auth/callback/route.ts:10,55,173`
+- `new URL('//evil.com/path', origin)` resolves to `https://evil.com/path`; phishing vector after genuine email confirmation.
+- Fix: Apply same `startsWith('/') && !startsWith('//')` allowlist as MFA enroll page; reject data:/javascript:.
+
+**AM5. MFA verify rate-limit is client-side React state — direct-API attacker faces no throttle** [medium]
+- File: `app/(auth)/mfa/verify/page.tsx:82-90`
+- Brute-force over an hour is practical without server-side throttle.
+- Fix: Server-side `mfa_verify_failures` table keyed by user_id; enforce in API route wrapping `supabase.auth.mfa.verify()`. Verify Supabase project-level rate limits.
+
+**AM6. createAuthCode doesn't validate non-empty code_challenge** [medium]
+- File: `app/api/mcp-oauth/authorize/route.ts:51,165`
+- Only validates `code_challenge_method === 'S256'` (default passes with empty challenge); today close but future verifyPkce change could bypass.
+- Fix: Return `invalid_request` when code_challenge is missing or <43 base64url chars.
+
+**AM7. OAuth consent CSRF-reachable — no CSRF token on POST /authorize** [medium]
+- File: `app/api/mcp-oauth/authorize/route.ts:140-147,161-211`
+- SameSite=Lax allows top-level POST via window.open auto-submit. Combined with ALL_SCOPES + no AAL2 gate silently exfiltrates API key.
+- Fix: CSRF token in GET stored in HttpOnly cookie; validate in POST; SameSite=Strict on OAuth cookies.
+
+**AM8. Anonymous sandbox users are not exempt from shouldEnforceMfa — trapped on /mfa/enroll** [medium]
+- File: `lib/auth/mfa.ts:17-21`
+- Sandbox flow breaks on hosted production.
+- Fix: `if (user.is_anonymous) return false` in shouldEnforceMfa(). Lock-in test in `lib/auth/__tests__/mfa.test.ts`.
+
+**AM9. Logout does not revoke refresh token or clear company-context cookie** [medium]
+- File: `components/dashboard/DashboardNav.tsx:129` and 4 others
+- `signOut()` defaults to `scope: 'local'`; refresh token continues issuing access tokens. Company cookie leaks across user sessions.
+- Fix: `signOut({ scope: 'global' })`; clear `gnubok-company-id` and `gnubok-invite-token` cookies with maxAge=0.
+
+**AM10. BankID linking overwrites app_metadata rather than merging** [medium]
+- File: `extensions/general/tic/index.ts:798-800,844-846`
+- `updateUserById` with `app_metadata: { bankid_linked: true }` replaces entire object; wipes Supabase-set `provider`/`providers` and any future subsystem metadata.
+- Fix: Fetch current app_metadata first, spread; OR use `user_metadata.bankid_linked` that doesn't collide with Supabase bookkeeping.
+
+**AM11. verifyPkce uses === string compare, not constant-time** [low]
+- File: `lib/auth/oauth-codes.ts:81`
+- Not exploitable (challenge is public) but defense-in-depth.
+- Fix: `crypto.timingSafeEqual(Buffer.from(hash), Buffer.from(codeChallenge))` with length guard.
+
+**AM12. Dynamic client registration endpoint has no rate limit** [low]
+- File: `app/api/mcp-oauth/register/route.ts:21-50`
+- Public; spammable (consumes Vercel function time); `redirect_uris` array unbounded.
+- Fix: IP-based rate limit (10 req/min); cap `redirect_uris.length` at 5.
+
+**AM13. Authorize GET renders code_challenge into action attribute without HTML escape** [low]
+- File: `app/api/mcp-oauth/authorize/route.ts:140,144`
+- WHATWG URL parser percent-encodes dangerous chars so practically safe, but escapeHtml is available and inconsistent with companyName treatment.
+- Fix: Wrap `url.pathname + url.search` in `escapeHtml()`.
+
+**AM14. Invite acceptance endpoint has no rate limit — status leak** [low]
+- File: `app/api/team/accept/route.ts:11-48`
+- 256-bit entropy; brute-force infeasible today but no throttle; 404/410 distinction leaks lifecycle state.
+- Fix: IP-based rate limit (20 req/min); uniform response for not-found / expired / used.
+
+**AM15. requireAuth() and middleware fail-open on getAuthenticatorAssuranceLevel error** [low]
+- File: `lib/auth/require-auth.ts:29-36`; `lib/supabase/middleware.ts:102-107`
+- Destructures data on error; aal undefined; MFA check passes silently.
+- Fix: Capture error; fail-closed with 503 or redirect to /mfa/verify.
+
+### Error-handling agent
+
+**EH1. Raw Postgres error.message returned in >70 API routes (info-disclosure)** [high]
+- File: `app/api/deadlines/[id]/route.ts:39` and ~70 others
+- Exposes table/column/constraint names; English jargon to Swedish users.
+- Fix: Route 500 responses through `getErrorMessage()`; log raw error server-side. At minimum strip `/relation "[^"]+"|column "[^"]+"|constraint "[^"]+"/`.
+
+**EH2. 203 'Unauthorized' literals returned unchanged** [high]
+- File: ~155 API route files
+- UI displays `data.error` raw across most surfaces; English "Unauthorized" in Swedish app.
+- Fix: Replace literal at API layer with Swedish message (simpler, 155 files) OR enforce getErrorMessage convention on client.
+
+**EH3. 31 'Failed to X' API error strings displayed to users** [high]
+- File: `app/api/transactions/[id]/match-invoice/route.ts:69` and many
+- Hardcoded English user-facing business errors displayed raw on categorize/match/book pages.
+- Fix: Translate each at source — these are user-facing business-logic errors, not engine internals.
+
+**EH4. Only one route segment has an error boundary** [high]
+- File: `app/(dashboard)/error.tsx` exists; /(auth), /(onboarding), /(public), /companies, /invite, /sandbox do not
+- Render errors fall through to `app/global-error.tsx` — full-page white screen with generic "Något gick fel".
+- Fix: Add error.tsx to (auth), (onboarding), companies at minimum. Pattern from (dashboard)/error.tsx.
+
+**EH5. global-error.tsx and (dashboard)/error.tsx don't capture to Sentry** [high]
+- File: `app/global-error.tsx:1-33`, `app/(dashboard)/error.tsx:14-16`
+- Only console.error; no Sentry trace despite SENTRY_DSN being configured.
+- Fix: `Sentry.captureException(error, { tags: { digest: error.digest } })` inside useEffect. Surface `error.digest` as "Referens: {digest}" for support correlation.
+
+**EH6. Silent swallowed errors in non-blocking operations** [medium]
+- File: `app/api/invoices/[id]/send/route.ts:198,216`, `lib/bookkeeping/handlers/supplier-invoice-handler.ts:42,72`, `app/api/transactions/[id]/categorize/route.ts:318,328,349,378`, `app/api/transactions/[id]/match-invoice/route.ts:115`, `lib/bookkeeping/engine.ts:314-316`
+- Background journal entry / document upload failures only log to stderr; user sees success but books incomplete.
+- Fix: Enqueue failures in `pending_operations` with visible "1 operation failed — retry" indicator, OR return `warnings: [{ type, message }]` array in success response.
+
+**EH7. Zod validation messages are mostly English** [medium]
+- File: `lib/api/schemas.ts:11,14,20,149,150,151,168,193,195,215,244,256,305,310,314,335,336,406,428,444,474,494,504,551` — ~60%
+- Messages like "Expected YYYY-MM-DD date format" propagate via validateBody through getErrorMessage as English field-prefixed strings.
+- Fix: Convert every Zod message to Swedish; set global error map via `z.setErrorMap` for defaults like "Expected string, received number"; translate `'Validation failed'` + `'Invalid JSON'` + `'Invalid query parameters'` in `lib/api/validate.ts`.
+
+**EH8. Correction dialog fallback is English** [medium]
+- File: `components/bookkeeping/CorrectionEntryDialog.tsx:112`
+- `throw new Error(result.error || 'Failed to create correction')` — fallback displayed in Swedish toast.
+- Fix: Change to `'Kunde inte skapa ändringsverifikation'`. Same pattern in `components/deadlines/UpcomingDeadlinesWidget.tsx:74`, `TaxTodoWidget.tsx:85`, transactions/page.tsx:255.
+
+**EH9. Bank callback error messages redirect with English URL params** [medium]
+- File: `app/api/extensions/enable-banking/callback/route.ts:77,83,104,206`
+- URL params `missing_parameters` / `invalid_state` / `Connection failed` surface raw in banking settings toast description.
+- Fix: Swedish phrases in URL param OR map tokens client-side (replicate `handleTicError` pattern).
+
+**EH10. Enable Banking sync errors leak English to toast** [medium]
+- File: `extensions/general/enable-banking/components/BankingSettingsPanel.tsx:104,159,211`
+- `Failed to get transactions (403): {...}` shown raw; provider 403 (expired consent) / 429 / 500 confusing.
+- Fix: Add `extensions/general/enable-banking/lib/error-messages.ts` Swedish mapper similar to invoice-inbox.
+
+**EH11. Health endpoint leaks raw DB error to public** [medium]
+- File: `app/api/health/route.ts:29,41`
+- Public (no auth); raw Supabase error message includes infrastructure details.
+- Fix: Return generic `error: 'database_error'`; log full error server-side.
+
+**EH12. MCP-oauth and extension settings routes leak English** [low]
+- File: `app/api/mcp-oauth/*`, `app/api/extensions/[sector]/[slug]/settings/route.ts:80`, `data/route.ts:42,90,130`, `ext/[...path]/route.ts:60`
+- OAuth acceptable (machine-to-machine per RFC); extension data/settings surface to user via workspaces.
+- Fix: Keep OAuth English; translate extension data/settings errors.
+
+**EH13. Invoice inbox error mapper exists but pattern is one-off** [low]
+- File: `extensions/general/invoice-inbox/lib/error-messages.ts:1-45`
+- Well-structured pattern-based mapper but duplicated rather than shared.
+- Fix: Expand `ERROR_PATTERN_MAP` in `lib/errors/get-error-message.ts`; introduce `registerErrorPatterns(patterns)` API for domain modules.
+
+**EH14. getResponseErrorMessage helper exists but is never imported** [low]
+- File: `lib/errors/get-error-message.ts:253-263`
+- Dead code; callers do manual unwrapping.
+- Fix: Refactor the 15 `getErrorMessage` call sites to use `getResponseErrorMessage`; promote in CLAUDE.md. Or delete.
+
+**EH15. isSwedishUserMessage heuristic may false-positive on mixed-language errors** [low]
+- File: `lib/errors/get-error-message.ts:111-127`
+- `/kunde inte/` or `/försök igen/` match pass English prefix through.
+- Fix: Tighten heuristic to require message START with Swedish word OR drop heuristic, rely on pattern map.
+
+**EH16. ValidateBody returns English top-level 'Validation failed'** [low]
+- File: `lib/api/validate.ts:41,62,104`
+- UIs reading `data.error` only show literal English.
+- Fix: Swedish summary like `'Valideringen misslyckades. Kontrollera fälten och försök igen.'`; translate `'Invalid JSON'` / `'Invalid query parameters'` siblings.
+
+### Event-bus agent
+
+**EB1. Supplier invoice handler queries company_settings by wrong key** [high] (dupe of VAT #2 / Engine #143)
+- File: `lib/bookkeeping/handlers/supplier-invoice-handler.ts:28`
+- Mock test passes because `createQueuedMockSupabase` ignores filter args.
+- Fix: Change filter; assert filter args in test.
+
+**EB2. Fire-and-forget eventBus.emit wrapped in synchronous try/catch** [high]
+- File: `app/api/transactions/[id]/match-invoice/route.ts:299-311`, `match-supplier-invoice/route.ts:211-223`, `lib/reconciliation/bank-reconciliation.ts:181-194,364-377`
+- No await; sync try/catch can't catch promise rejection; serverless may kill work mid-flight before HTTP response returns.
+- Fix: Add `await` to all four sites; keep try/catch as defensive safety.
+
+**EB3. bank-file import emits transaction.synced differently from enable-banking** [medium]
+- File: `app/api/import/bank-file/execute/route.ts:115-120`, `extensions/general/enable-banking/index.ts:356-360`
+- bank-file uses `eventBus.emit` directly; enable-banking uses `ctx?.emit ?? eventBus.emit.bind(...)`.
+- Fix: Standardize extension code to always use `ctx.emit`; document webhook/cron exceptions.
+
+**EB4. Salary and lifecycle events not persisted to event_log** [medium]
+- File: `lib/events/handlers/event-log-handler.ts:12-36`
+- `PERSISTED_EVENT_TYPES` missing salary_run.created/approved/booked, agi.generated/submitted, journal_entry.deleted, company.deleted, account.deleted.
+- Fix: Add salary + AGI events + journal_entry.deleted; document excluded ones in comment block.
+
+**EB5. Dead event types never emitted (receipt.extracted, receipt.matched, receipt.confirmed)** [medium]
+- File: `lib/events/types.ts:43-64`
+- Receipt-ocr extension doesn't exist in `extensions/general/`; handlers/settings are dead configuration.
+- Fix: Remove types + handlers + settings until receipt-ocr exists, OR add TODO comment noting missing emission source.
+
+**EB6. Bus logs handler failures without handler identity and uses console** [medium]
+- File: `lib/events/bus.ts:52-58`
+- Can't tell which handler in a 4-subscriber chain failed; bypasses structured logger.
+- Fix: Track handler ids via wrapper; log via `createLogger('event-bus')` with structured fields `{ eventType, handlerId, error }`.
+
+**EB7. No per-handler timeout — slow handler blocks HTTP response** [medium]
+- File: `lib/events/bus.ts:44-60`
+- `await Promise.allSettled` means single slow extension delays every API route that emits; Vercel 10s limit risk.
+- Fix: Optional `timeoutMs` per handler via `Promise.race`; `emitAsync()` variant (no await) for non-critical events; document which must block response.
+
+**EB8. invoice-inbox emits supplier_invoice.registered even if registration entry creation failed** [medium]
+- File: `extensions/general/invoice-inbox/index.ts:838-876`
+- Try/catch logs to stderr but flow emits registered → confirmed → may double-post via core handler.
+- Fix: On creation failure either fail request with Swedish error OR skip lifecycle emits and mark inbox item as needing attention.
+
+**EB9. account.deleted payload missing companyId breaks extension context** [low]
+- File: `lib/events/types.ts:87`; `lib/extensions/registry.ts:62-64`
+- Registry fallback makes ctx.companyId = userId; DB queries silently fail.
+- Fix: Add `companyId: string | null` to account.deleted; document absence intent.
+
+### Document-retention agent
+
+**DR1. anonymize_user_account RPC called from API but no migration in repo** [high]
+- File: `app/api/account/delete/route.ts:51`
+- RPC applied out-of-band; fresh/preview branches 500 on delete; retention posture undefined. Violates CLAUDE.md "Always use migration files".
+- Fix: Commit migration defining `public.anonymize_user_account(target_user_id uuid)`. Verify it scrubs PII from profiles but doesn't touch bookkeeping / document_attachments / audit_log.
+
+**DR2. Documents storage bucket RLS scoped to uploader user_id, not company_id** [high] (dupe of RLS3)
+- File: `supabase/migrations/20240101000024_storage_bucket_policies.sql:30-52`
+- Teammates blocked from downloading colleagues' uploads; BFL räkenskapsinformation access broken.
+- Fix: Switch storage path to `documents/{company_id}/...`; RLS check `(storage.foldername(name))[1]::uuid IN (SELECT user_company_ids())`.
+
+**DR3. Verify cron does not flag missing storage files** [high]
+- File: `app/api/documents/verify/cron/route.ts:59-63`
+- Download failure only logged to stderr; no audit_log entry; no storage_missing_at flag.
+- Fix: Insert `audit_log` INTEGRITY_FAILURE with action + description; add `storage_missing_at timestamptz` column.
+
+**DR4. delete_user_account audit-trigger disabling wipes audit history on CASCADE** [high]
+- File: `supabase/migrations/20260330170000_delete_user_account_rpc.sql:29-36`; `schema_sync.sql:804-812,820-822`
+- Explicit `DELETE FROM public.audit_log WHERE company_id = ANY(v_company_ids)`; BFL-relevant audit trail destroyed.
+- Fix: Don't delete audit_log rows; redact JSONB PII fields only. Retain with user_id pointing at tombstone.
+
+**DR5. document.storage_path can be used to enumerate other users' files if bucket RLS changes** [medium]
+- File: `app/api/documents/[id]/route.ts:42-44`
+- Signed URL depends solely on DB-side filter; rogue storage_path insert could leak.
+- Fix: When fixing DR2, ensure RLS verifies company_id via folder prefix; don't rely solely on DB-side filtering.
+
+**DR6. receipts table has no immutability trigger; linked receipts can be deleted** [medium]
+- File: `supabase/migrations/20240101000004_receipts.sql:7-52`; `schema_sync.sql:873-888`
+- Matched receipts (supplying VAT split / underlag) deletable via `receipts_delete` policy; ON DELETE SET NULL silently unlinks from transaction.
+- Fix: Add BEFORE DELETE trigger `block_receipt_deletion` rejecting when matched_transaction_id + journal_entry_id non-null. Consider immutability on extracted fields post-confirmation.
+
+**DR7. Archive export silently drops documents when storage download fails** [medium]
+- File: `lib/reports/full-archive-export.ts:365-394`
+- ZIP returns 200 with partial manifest; no HTTP signal; GDPR portability degraded.
+- Fix: Include `X-Archive-Partial: true` header + `partial: true` in body when any manifest entry errored. Surface count on UI before download.
+
+**DR8. Archive export doesn't include superseded document versions' content when unlinked** [medium]
+- File: `lib/reports/full-archive-export.ts:327-336`
+- Unlink-then-delete path renders version invisible; audit doesn't track unlink specifically.
+- Fix: Fix metadata-immutability trigger (critical) to block unlinking; add DOCUMENT_UNLINKED audit action.
+
+**DR9. No enforcement that journal entries have supporting documents (underlag)** [medium]
+- File: `lib/bookkeeping/engine.ts` and related
+- BFL 5 kap 6§ requires räkenskapsinformation; gnubok treats documents as best-effort.
+- Fix: Periodic report listing posted entries without any linked document as first step.
+
+**DR10. Verify cron schedule in vercel.json vs docstring mismatch** [low]
+- File: `vercel.json:20-22` (daily) vs `app/api/documents/verify/cron/route.ts:7-8` (weekly in doc) vs CLAUDE.md (weekly)
+- Reviewers can't trust either artifact.
+- Fix: Reconcile; daily is more conservative for integrity.
+
+**DR11. block_document_deletion uses SECURITY DEFINER but audit_log insert can fail silently** [low]
+- File: `supabase/migrations/20240101000017_enforcement_triggers.sql:164-213`, `20260330130000...:1165-1207`
+- Insert before RAISE; transaction aborts rolls back the audit insert; blocked deletion attempts leave no trace.
+- Fix: Use `pg_notify` or out-of-band logger with autonomous transactions for the audit insert.
+
+**DR12. Sandbox trigger bypass uses ambiguous user_id lookup** [low]
+- File: `supabase/migrations/20260311120000_sandbox_support.sql:18-112,149-203`
+- Checks `company_settings.user_id` which was dropped in multi-tenant refactor; sandbox bypass silently broken (never triggers).
+- Fix: Rewrite to `company_id = COALESCE(OLD.company_id, NEW.company_id)`; verify sandbox tests actually exercise the bypass branch.
+
+### Rate-limits agent
+
+**RL1. MFA verify lockout is client-side only — brute force not prevented server-side** [high]
+- File: `app/(auth)/mfa/verify/page.tsx:85-90` (dupe of Auth #AM5)
+- Suggested fix same as AM5.
+
+**RL2. Two cron endpoints use non-timing-safe CRON_SECRET comparison** [high]
+- (Dupe of Security SEC3 / Auth AM1.)
+
+**RL3. /api/vat/validate proxies every request straight to VIES, no cache, no rate limit** [high]
+- File: `app/api/vat/validate/route.ts:8-39`
+- SSRF-through-proxy DoS pattern; gnubok's Vercel egress IP shared across customers → easy to get flagged.
+- Fix: Cache results keyed by `{country_code, vat_number}` for ≥24h (vat_validation_cache table); rate-limit 30/hour per user; debounce UI button.
+
+**RL4. Bank file execute accepts unbounded transactions[] array** [medium]
+- File: `app/api/import/bank-file/execute/route.ts:43-48`
+- Parse caps at 10 MB but execute accepts synthetic parsed transactions; 10M fake transactions possible.
+- Fix: Cap `transactions.length` at 10,000; Zod per-entry validation (no amount >10^12, no absurd dates); return 413 on exceed.
+
+**RL5. SIE execute route has no file-size guard** [medium]
+- File: `app/api/import/sie/execute/route.ts:36-66`
+- Parse has 50 MB cap but execute re-accepts FormData without check; direct POST blows memory.
+- Fix: Apply same 50 MB guard at top of execute. Extract to `lib/import/validate-upload.ts` shared with parse.
+
+**RL6. API key rate limit window is fixed (1 minute) — allows 2x burst** [medium]
+- File: `supabase/migrations/20260326130000_api_key_scopes.sql:27-42`
+- 200 requests across minute boundary with precise timing.
+- Fix: Sliding window or token bucket; OR document effective "up to 2x RPM across minute boundaries".
+
+**RL7. Invoice reminder cron sends emails in serial for-loop with no Resend quota awareness or backoff** [medium]
+- File: `lib/invoices/reminder-processor.ts:162-263`; `extensions/general/email/lib/resend-service.ts:31-80`
+- No 429 retry, no daily quota awareness, no inter-send delay.
+- Fix: Honor Retry-After on 429; `withRetry` from `lib/providers/retry.ts`; 100-200ms inter-send delay over 20 reminders; long-term queue via event_log + worker.
+
+**RL8. Company invite endpoint has no per-user rate limit** [medium]
+- File: `app/api/company/members/invite/route.ts:25-184`
+- Free email-send service / email-harvest vector; burns Resend quota.
+- Fix: Cap 20 invites per company per 24h via count against `company_invitations.created_at`. Apply to `app/api/team/invite/route.ts` too.
+
+**RL9. /api/invoice-action/[token] has no rate limit** [medium]
+- File: `app/api/invoices/reminders/action/route.ts:18-173`
+- Public endpoint; token brute-force or mass-GET DoS; timing-based enumeration possible via `.eq('action_token', token).single()`.
+- Fix: Per-IP 10 req/min; timing-safe token lookup; validate format (length/charset) before DB round-trip.
+
+**RL10. Enable Banking retry uses linear backoff and ignores Retry-After** [medium]
+- File: `extensions/general/enable-banking/lib/api-client.ts:183-217`
+- Linear backoff `RETRY_DELAY_MS * (attempt + 1)`; may get gnubok app ID flagged by banks.
+- Fix: Parse `response.headers.get('retry-after')`; honor if present; else exponential backoff `initialDelay * 2^attempt` with jitter capped 30s.
+
+**RL11. fetchAllRows has no iteration cap** [low]
+- File: `lib/supabase/fetch-all.ts:29-37`
+- `while (true)` loop with no maximum; 28 call sites; malicious/massive company can OOM Vercel 1GB.
+- Fix: Configurable `maxRows` parameter (default 100,000); explicit throw on exceed; log warn above 10,000.
+
+**RL12. /api/health is public and runs a live DB query on every request** [low]
+- File: `app/api/health/route.ts:9-45`
+- 100 RPS flood = 100 Supabase queries/sec hitting service role pool.
+- Fix: Cache healthy response in-process 10-30s; lighter query or ping Supabase `/health`; do DB check periodically not per request.
+
+## Cross-cutting Sonnet
+
+### UI-UX agent
+
+**UX1. Saturated blue/purple/gray badges on supplier-invoice and expense status — off-brand** [high]
+- File: `app/(dashboard)/supplier-invoices/[id]/page.tsx:23-31`; `app/(dashboard)/expenses/[id]/page.tsx:19-26`; `suppliers/[id]/page.tsx:125-131`
+- Raw Tailwind `bg-blue-100 text-blue-800` / `bg-purple-100` / `bg-orange-100` / `bg-gray-100` outside palette.
+- Fix: Replace with token-based: registered → `bg-muted` / `variant="secondary"`; disputed/partially_paid → `bg-warning/15 text-warning-foreground`; credited → `bg-secondary`.
+
+**UX2. Salary run status uses blue/emerald/amber raw classes** [high]
+- File: `app/(dashboard)/salary/page.tsx:20-26`; `app/(dashboard)/salary/runs/[id]/page.tsx:28-35`
+- `STATUS_COLORS` uses bg-blue-100 / bg-emerald-100 / bg-green-100 / bg-amber-100 instead of design tokens.
+- Fix: Swap to tokens: approved → primary/10; paid → success/10; booked → success/15; review → warning/15.
+
+**UX3. font-bold on financial totals — should be font-semibold or font-medium** [high]
+- File: `app/(dashboard)/reports/page.tsx:666,694,808,1177,1182` and 6 others
+- Design baseline documents `font-medium` default, `font-semibold` for emphasis, `font-bold` rare.
+- Fix: Replace `font-bold` with `font-semibold` on totals; reserve `font-bold` only for net-result card.
+
+**UX4. Supplier-invoice table amounts use font-mono instead of tabular-nums** [high]
+- File: `app/(dashboard)/supplier-invoices/page.tsx:174-175`
+- Applies monospace (Geist Mono) vs body Geist Sans — inconsistent with invoices/journal entries/transactions/KPI.
+- Fix: Replace `font-mono` with `tabular-nums`.
+
+**UX5. Reports page financial amounts missing tabular-nums in ReportSectionTable** [high]
+- File: `app/(dashboard)/reports/page.tsx:858-868`
+- Income statement, balance sheet, NE-bilaga render without fixed-width numerals.
+- Fix: Add `tabular-nums` to amount `<td>` + subtotal `<span>`; also IncomeStatementView and BalanceSheetView totals.
+
+**UX6. VAT declaration result badge uses bg-orange-100 — raw Tailwind, not a token** [high]
+- File: `app/(dashboard)/reports/page.tsx:1032,1184`
+- Orange not in palette; should be ochre warning token.
+- Fix: Replace with `bg-warning/15 text-warning-foreground` and `text-warning-foreground`.
+
+**UX7. Public pages use font-bold text-gray-900 and slate gradient — off-brand** [high]
+- File: `app/(public)/dpa/page.tsx:14`, `privacy/page.tsx:13`, `invoice-action/[token]/page.tsx:147,151,186`
+- Headings bypass `font-display` / `font-medium` / `foreground` token; `bg-gradient-to-b from-slate-50 to-white` is raw Tailwind slate palette.
+- Fix: Change headings to `font-display text-3xl font-medium tracking-tight text-foreground`; replace gradient with `bg-background`.
+
+**UX8. Login and register pages use border-blue-200 bg-blue-50 text-blue-* info boxes** [medium]
+- File: `app/(auth)/login/page.tsx:354-365,387-391`, `register/page.tsx:361-362`
+- Blue not a design system semantic.
+- Fix: `border-warning/30 bg-warning/5 text-foreground` OR `border-border bg-muted text-muted-foreground` for neutral info.
+
+**UX9. Help page category badges use blue, purple, cyan, pink, orange — Tailwind rainbow** [medium]
+- File: `app/(dashboard)/help/page.tsx:203-208`
+- Five saturated hues on single page violates "restrained palette".
+- Fix: Collapse to 2-3 token-based tints (primary/success/warning); vary icon shape if differentiation needed.
+
+**UX10. MFA/2FA "enabled" banner uses bg-green-50 border-green-200 text-green-* — raw green** [medium]
+- File: `components/settings/SecuritySettings.tsx:215-223`
+- `--success` token exists (sage green) exactly for this purpose.
+- Fix: `bg-success/8 border-success/20 text-success`.
+
+**UX11. viewportThemeColor is #304D83 — saturated indigo blue** [medium]
+- File: `app/layout.tsx:37`
+- Brand is grayscale foundation; blue bar in mobile chrome/PWA splash is off-brand.
+- Fix: Change to primary dark (~#3f3f46 zinc-700) or foreground (~#171717).
+
+**UX12. global-error.tsx h2 uses font-semibold and a raw button** [medium]
+- File: `app/global-error.tsx:17-28`
+- Inline-classed `<button>` instead of Button component; `text-xl font-semibold` instead of `font-display`.
+- Fix: Use Button; change heading to `font-display font-medium`.
+
+**UX13. Dashboard error page has Swedish typo "Nagot gick fel"** [medium]
+- File: `app/(dashboard)/error.tsx:20`
+- Missing å.
+- Fix: Change to `"Något gick fel"`.
+
+**UX14. Invoice list empty state (tab-filtered) does not use EmptyState component** [medium]
+- File: `app/(dashboard)/invoices/page.tsx:254-261`
+- Ad-hoc `<div>` with bare icon + `<h3>`; inconsistent with shared EmptyState pattern (muted circle background + action).
+- Fix: Replace with `<EmptyState icon={Receipt} title="Inga fakturor..." description="Prova att byta flik..." />`.
+
+**UX15. Supplier-invoice table row not fully clickable — inconsistent with invoices/expenses** [medium]
+- File: `app/(dashboard)/supplier-invoices/page.tsx:160-183`
+- Invoice-number link is inside cell; clicking row outside link has no action.
+- Fix: `<tr onClick>` + `cursor-pointer` OR extract to card-list pattern.
+
+**UX16. Dashboard income/expense detail cards use p-5 — off rhythm** [low]
+- File: `components/dashboard/DashboardContent.tsx:519,538`
+- Other cards use p-4; 4/6/8 step rhythm documented.
+- Fix: Change to p-4 or p-6.
+
+**UX17. InvoiceInboxWorkspace uses border-red-500 text-red-700 — raw red, not destructive token** [low]
+- File: `components/extensions/general/InvoiceInboxWorkspace.tsx:212,221,235`
+- Confidence level badges should use design-system `--destructive`.
+- Fix: `border-destructive/25 bg-destructive/5 text-destructive`.
+
+**UX18. InvoiceInboxWorkspace EU validation info box uses raw blue** [low]
+- File: `components/extensions/general/InvoiceInboxWorkspace.tsx:1201-1208`
+- No blue semantic in palette.
+- Fix: `border-border bg-muted/40 text-foreground` OR subtle primary tint (primary/15, primary/5, text-primary).
+
+### A11y agent
+
+**A1. Icon-only destructive "Delete" buttons missing aria-label** [high]
+- File: `app/(dashboard)/supplier-invoices/[id]/page.tsx:202`, `suppliers/[id]/page.tsx:167`, `invoices/new/page.tsx:581`, `expenses/new/page.tsx:534`, `components/bookkeeping/ChartOfAccountsManager.tsx:430`, `CorrectionEntryDialog.tsx:227`, `settings/CompanyMembersSection.tsx:250,299`, `CalendarHeader.tsx:59,62`
+- Only 9 of ~35 icon buttons have aria-label; screen readers announce no meaningful name.
+- Fix: Add Swedish aria-label to every icon-only button: "Ta bort rad", "Redigera konto", "Gå tillbaka", etc.
+
+**A2. Framer Motion animations not gated by prefers-reduced-motion** [high]
+- File: `components/transactions/TransactionInboxCard.tsx:74`, `SwipeCategorizationView.tsx:631`
+- JS-driven animations bypass CSS `@media (prefers-reduced-motion: reduce)` override.
+- Fix: Import `useReducedMotion` from framer-motion. `transition={shouldReduceMotion ? { duration: 0 } : { duration: 0.25 }}`. Disable drag on SwipeCategorizationView.
+
+**A3. Progress bars lack accessible label — loading invisible to SR** [high]
+- File: `components/import/SIEUploadStep.tsx:97`, `BankFileUploadStep.tsx:166`, `BatchCategorySelector.tsx:56`, `ArcimMigrationWorkspace.tsx:988`, `app/(dashboard)/import/page.tsx:239`
+- "progress bar, 0 percent" with no context.
+- Fix: Pass `aria-label="Importerar SIE-fil"` etc. Consider outer `<div role="status" aria-live="polite">` for dynamic updates.
+
+**A4. Tag-input remove button has no focus ring and no accessible name** [high]
+- File: `components/ui/tag-input.tsx:94`
+- `focus:outline-none` removes ring with no replacement; only content is `<X>` icon.
+- Fix: Replace with `focus-visible:ring-1 focus-visible:ring-ring focus-visible:ring-offset-1`; add `aria-label={`Ta bort ${tag}`}`.
+
+**A5. Data tables missing scope="col" on th headers** [medium]
+- File: `app/(dashboard)/supplier-invoices/page.tsx:148`, `suppliers/[id]/page.tsx:260`, `supplier-invoices/[id]/page.tsx:340`, `supplier-invoices/new/page.tsx:394`
+- Screen readers can't reliably associate cells with headers. shadcn TableHead doesn't default-add either.
+- Fix: Add `scope="col"` to all raw `<th>`; include as default in TableHead component.
+
+**A6. Collapsible "Övrigt" nav section button missing aria-expanded** [medium]
+- File: `components/dashboard/DashboardNav.tsx:307`
+- Rotates chevron visually but screen readers can't know open/closed state.
+- Fix: Add `aria-expanded={isOvrigtExpanded}`; optional `aria-controls`.
+
+**A7. Mobile navigation bottom sheet missing aria-modal** [medium]
+- File: `components/dashboard/DashboardNav.tsx:504`
+- role="dialog" + aria-label present but no aria-modal; JAWS/iOS VoiceOver may not restrict reading; no explicit focus trap.
+- Fix: Add `aria-modal="true"`; use Radix Dialog primitive for proper focus trap.
+
+**A8. --muted-foreground at 40% likely fails 4.5:1 on white/card** [medium]
+- File: `app/globals.css:25`; `components/dashboard/DashboardNav.tsx:221`
+- `#666666` on `#FCFCFC` ≈ 4.48:1 borderline fail. Placeholder/60 variant ≈ 2.2:1 fails WCAG 1.4.3.
+- Fix: Increase to `0 0% 38%` (`#616161`, ~4.74:1 on white). Dedicated placeholder token.
+
+**A9. SelectTrigger uses focus: instead of focus-visible:** [medium]
+- File: `components/ui/select.tsx:21`
+- Focus ring on mouse click; inconsistent with inputs/buttons/tabs using focus-visible. ring-primary/35 also may be too low contrast.
+- Fix: `focus-visible:outline-none focus-visible:border-primary/60 focus-visible:ring-2 focus-visible:ring-primary/60`.
+
+**A10. Loading spinners lack accessible label across ~20+ pages** [medium]
+- File: `app/(public)/invoice-action/[token]/page.tsx:91`, `customers/[id]/page.tsx:176`, `invoices/[id]/page.tsx:338`, `companies/new/page.tsx:199` and ~20 others
+- `<Loader2 className="animate-spin" />` inside unannotated container.
+- Fix: Wrap in `<div role="status" aria-label="Laddar innehåll">` or add aria-live="polite".
+
+**A11. Status badges use raw Tailwind colors without icon/text pairing check** [medium]
+- File: `app/(dashboard)/supplier-invoices/[id]/page.tsx:23`, `suppliers/[id]/page.tsx:124`
+- `bg-blue-100 text-blue-800` ≈ 4.3:1; `bg-yellow-100 text-yellow-800` ≈ 3.5:1 — likely fails 4.5:1 for normal text.
+- Fix: Use design system Badge with semantic variants (success/warning/destructive/secondary). Also fixes dark-mode.
+
+**A12. Skip-to-content link absent on 2 layout fallback branches** [medium]
+- File: `app/(dashboard)/layout.tsx:86,134`
+- Only third render path includes "Hoppa till innehåll"; fallback branches force keyboard users to tab through nav.
+- Fix: Extract skip link component; repeat in all three paths before DashboardNav.
+
+**A13. animate-slide-up CSS class under prefers-reduced-motion** [medium]
+- File: `app/globals.css:269`
+- Global @media wildcard * covers most but transition-all on Button and other effects need manual audit.
+- Fix: Verify in browser with prefers-reduced-motion: reduce that auth slide-up / button transitions / modal animations all resolve immediately.
+
+**A14. Lucide icons inside icon+text buttons not marked aria-hidden** [low]
+- File: Broadly across DashboardNav, invoices/new/page, login, etc. (100+ instances)
+- Implicit <title> causes double-reading ("Log out Logga ut") on some screen readers.
+- Fix: Add aria-hidden="true" to decorative icons paired with visible text. Wrapper component or ESLint rule.
+
+**A15. Dialog close button label is "Close" (English) not "Stäng"** [low]
+- File: `components/ui/dialog.tsx:48`
+- Jarring in sv-lang app. SandboxBanner and ApiKeysPanel close buttons use Swedish — this one is inconsistent.
+- Fix: Change `<span className="sr-only">Close</span>` to `Stäng`.
+
+**A16. MFA enroll copy-secret button has no aria-label** [low]
+- File: `app/(auth)/mfa/enroll/page.tsx:236`
+- Icon-only button (Check/Copy) with no aria-label.
+- Fix: `aria-label={copied ? 'Kopierat!' : 'Kopiera hemlig nyckel'}`.
+
+**A17. --border token at 90% lightness on white card fails 3:1 UI contrast** [low]
+- File: `app/globals.css:33`
+- `#E6E6E6` on `#FCFCFC` ≈ 1.45:1; inputs/selects/textareas borders hard to see for low-vision users.
+- Fix: Increase to `0 0% 60%` (~3.08:1 on white) or `0 0% 70%` (~2.27:1 borderline).
+
+**A18. toast TOAST_REMOVE_DELAY effectively infinite but ToastClose X has no aria-label** [low]
+- File: `components/ui/use-toast.tsx:7`, `components/ui/toast.tsx:81`
+- Radix ToastPrimitive.Close may provide default but should verify.
+- Fix: Add `aria-label="Stäng"` explicitly consistent with other close buttons.
+
+### Mobile-UX agent
+
+**M1. Batch-mode floating action bar ignores safe-area-inset-bottom** [high]
+- File: `app/(dashboard)/transactions/page.tsx:864`
+- bottom-20 (80px) above bottom nav (64px) but doesn't add env(safe-area-inset-bottom). iPhone home indicator overlap possible.
+- Fix: `style={{ bottom: 'calc(5rem + env(safe-area-inset-bottom, 0px))' }}`.
+
+**M2. Multiple financial number inputs missing inputMode="decimal"** [high]
+- File: Key sites — `app/(dashboard)/expenses/new/page.tsx:492,601,700`, `expenses/[id]/page.tsx:478`, `supplier-invoices/new/page.tsx:343`, `CorrectionEntryDialog.tsx:245,254`, `CustomerForm.tsx:293`, `InvoiceSettingsForm.tsx:34,42`, `salary/employees/new/page.tsx:174,202,207,255,264`, `salary/runs/new/page.tsx:76,80`, `TransactionForm.tsx:116`
+- iOS shows default alphanumeric keyboard instead of numeric/decimal pad. Invoice-new does this correctly — apply same pattern.
+- Fix: Add `inputMode="decimal"` to currency fields, `inputMode="numeric"` to integer fields (invoice numbers, payment terms).
+
+**M3. Inline badge-button touch targets below 44px in transaction history** [high]
+- File: `components/transactions/TransactionHistoryList.tsx:146,158`
+- "Ej bokförd" / "Möjlig match: Faktura X" styled as badges (`px-2.5 py-0.5 text-xs`) ≈ 20px height.
+- Fix: Replace with `<Button size="sm">` (h-9 = 36px) or add `py-2` or wrap in `min-h-[44px] flex items-center` container.
+
+**M4. h-8 w-8 (32px) delete buttons without 44px expansion** [medium]
+- File: `components/settings/CompanyMembersSection.tsx:252,301`
+- Remove-member / revoke-invite lack `min-h-[44px] min-w-[44px]` overrides used elsewhere (e.g. JournalEntryForm).
+- Fix: Add min-44px overrides OR use default `size="icon"` which renders h-10 w-10.
+
+**M5. PaymentBookingDialog desktop table lacks inputMode and sub-44px delete** [medium]
+- File: `components/invoices/PaymentBookingDialog.tsx:317,326,337`
+- Desktop table type="number" inputs without inputMode="decimal"; delete button h-8 w-8 without 44px minimum.
+- Fix: Add inputMode="decimal"; delete button h-10 w-10 or min-44px.
+
+**M6. PWA manifest locks orientation to portrait-primary** [medium]
+- File: `public/manifest.json:9`
+- Tablets/landscape data entry blocked; a11y guidelines discourage orientation lock.
+- Fix: Remove orientation key or set to "any".
+
+**M7. AccountCombobox dropdown items ~28-32px height** [medium]
+- File: `components/bookkeeping/AccountCombobox.tsx:201`
+- py-1.5 too close together for reliable mobile touch.
+- Fix: `py-3` on mobile or conditional `py-2 sm:py-1.5`; consider bottom-sheet on mobile.
+
+**M8. Batch-select Checkbox 16×16px without touch target expansion** [medium]
+- File: `components/transactions/TransactionInboxCard.tsx:100`
+- Default h-4 w-4; card tap area works but checkbox itself unclear.
+- Fix: Wrap in `<label>` with min-h-[44px] min-w-[44px] flex items-center justify-center -m-3 p-3. Or h-5 w-5.
+
+**M9. Mobile bottom nav only shows 3 items leaving Reports and Expenses behind drawer** [low]
+- File: `components/dashboard/DashboardNav.tsx:174`
+- Pinned tabs: Översikt, Fakturor, Transaktioner, Meny. Reports/Expenses/Bookkeeping require drawer.
+- Fix: Consider user-configurable or MRU-based tabs; or add Reports as 4th tab.
+
+### Logging agent
+
+**L1. Journal entry commit has no info-level log** [high]
+- File: `lib/bookkeeping/engine.ts:244-281`
+- Most critical operation silent; debugging "where did voucher A-2341 come from?" requires DB reconstruction.
+- Fix: `createLogger('bookkeeping-engine')`; log info on commit with `{ companyId, entryId, voucherNumber, voucherSeries }`.
+
+**L2. API key creation has no success log** [high]
+- File: `app/api/settings/api-keys/route.ts:80-105`
+- Security-sensitive; no trace of creation or revocation.
+- Fix: `log.info({ userId, companyId, keyPrefix, name }, 'API key created')` after successful insert.
+
+**L3. Company creation has no success log** [high]
+- File: `lib/company/actions.ts:60-147`
+- Significant business event untraced.
+- Fix: After revalidatePath, `log.info({ companyId, userId, entityType }, 'Company created via onboarding')`.
+
+**L4. Send invoice has no info log on success** [high]
+- File: `app/api/invoices/[id]/send/route.ts:158-233`
+- No production trace of who sent what to whom; errors logged but not success.
+- Fix: After eventBus.emit, `log.info({ invoiceId, invoiceNumber, to, companyId }, 'Invoice sent')`.
+
+**L5. Missing login success/failure structured log** [high]
+- File: `app/(auth)/auth/callback/route.ts:1-140`
+- Security-sensitive; no server trace of auth callback outcomes.
+- Fix: `createLogger('auth/callback')`; `log.info({ userId }, 'Auth callback success')` and `log.warn({ type, error }, 'Auth callback failed')`.
+
+**L6. Logger missing debug level — all verbose logs forced to console.log** [medium]
+- File: `lib/logger.ts:9`
+- `LogLevel = 'info' | 'warn' | 'error'`; no debug. Hot-path files promote trace to info (noise) or fall back to console.log.
+- Fix: Add `debug(message, ...args)` gated by `NODE_ENV === 'development'` or `LOG_LEVEL` env var.
+
+**L7. Logger uses varargs instead of structured context objects** [medium]
+- File: `lib/logger.ts:21-29`
+- Space-separated text output; log aggregators (Vercel/Axiom/Datadog) can't index structured fields. Pino/Bunyan convention impossible.
+- Fix: Change signature to `info(context: Record<string, unknown> | string, message?: string)` emitting JSON in production, or integrate pino.
+
+**L8. EventBus error handler uses console.error directly** [medium]
+- File: `lib/events/bus.ts:54`
+- High-priority signal bypasses logger; missing module prefix / Sentry scope.
+- Fix: `const log = createLogger('event-bus')` at module level; replace console.error.
+
+**L9. Storno service uses console.error instead of logger** [medium]
+- File: `lib/core/bookkeeping/storno-service.ts:31,38`
+- Errors lose company/entry context.
+- Fix: `const log = createLogger('storno')` with structured `{ entryId, error }`.
+
+**L10. document-matcher — 15+ chatty console.log calls at info-equivalent level** [medium]
+- File: `lib/documents/document-matcher.ts:55-309`
+- Per-document-per-candidate lines; hundreds per sweep in production.
+- Fix: Move to debug level once L6 added; use `createLogger('document-matcher')`.
+
+**L11. batch-match.ts — console.log sweep progress at info level** [medium]
+- File: `lib/documents/batch-match.ts:47-107`
+- Per-item skip logs noise; summary at line 107 correctly info.
+- Fix: `createLogger('batch-match')`; promote summary; demote per-item to debug.
+
+**L12. sie-import.ts — console.log/info/error throughout** [medium]
+- File: `lib/import/sie-import.ts:863,939,1368,1844,1856,1935,1938,1965`
+- console.info bypasses module prefix + env filtering. Error cases lack structured context.
+- Fix: `createLogger('sie-import')`; pass `{ companyId, batchNumber, attempt }` to error calls.
+
+**L13. Cron jobs — console.log/error without module prefix** [medium]
+- File: `app/api/invoices/reminders/cron/route.ts:12,20,24,39`; `events/cleanup/cron/route.ts:31,35`; `deadlines/status/cron/route.ts:33,45`; `sandbox/cleanup/cron/route.ts:34,38`; `tax-deadlines/cron/route.ts:33,41`
+- Reminders cron has no module tag; errors lack `durationMs` for performance audit.
+- Fix: `createLogger` per cron; `{ durationMs, processed, sent, failed }`.
+
+**L14. enable-banking/lib/sync.ts — console.log for sync start/result** [medium]
+- File: `extensions/general/enable-banking/lib/sync.ts:52,66,94,112`
+- Critical operational path unfilterable.
+- Fix: `createLogger('enable-banking/sync')`; log.info/log.error.
+
+**L15. Invoice send failure missing companyId and invoiceId context in error logs** [medium]
+- File: `app/api/invoices/[id]/send/route.ts:159,174,198,216,232`
+- No correlation to specific invoice from Vercel log.
+- Fix: Include `{ invoiceId, companyId }` in every error log; `createLogger('api/invoices/send')`.
+
+**L16. CompanyMembersSection logs invite URL in DEV** [low]
+- File: `components/settings/CompanyMembersSection.tsx:93`
+- `console.log('[DEV] Company invite URL:', data.data.inviteUrl)` exposes `gnubok_inv_` token plaintext in browser console.
+- Fix: Truncate token: `inviteUrl.replace(/gnubok_inv_\S+/, '[TOKEN]')` or use server-side log.
+
+**L17. /api/log lacks rate limiting and uses JSON.stringify(extra)** [low]
+- File: `app/api/log/route.ts:8`
+- Unauthenticated; malicious actor can flood logs. `JSON.stringify(extra)` on Error returns `{}` (non-enumerable props).
+- Fix: Add auth check + rate limiting; use `createLogger('onboarding-log')` with structured context.
+
+**L18. Settings tax deadline logs — no module prefix** [low]
+- File: `app/api/settings/route.ts:136,138`
+- Indistinguishable in logs from other routes.
+- Fix: `createLogger('api/settings')`; include companyId.
+
+**L19. provider-data-fetcher.ts — logs object keys (potential data leak)** [low]
+- File: `lib/providers/provider-data-fetcher.ts:153,251`
+- Diagnostic dead debug code.
+- Fix: Remove or gate behind debug with `createLogger('provider-data-fetcher')`.
+
+**L20. register page logs supabaseUrl and user metadata in browser console** [low]
+- File: `app/(auth)/register/page.tsx:189,223`
+- Client-side debug traces outputting supabaseUrl/userId/email/confirmationSentAt etc.; not guarded by NODE_ENV.
+- Fix: Wrap with `if (process.env.NODE_ENV === 'development')` or remove.
+
+### Testing agent
+
+**T1. Fiscal period lifecycle API routes have no route-level tests** [high]
+- File: `app/api/bookkeeping/fiscal-periods/[id]/close/route.ts:1` + 4 others (`lock`, `year-end`, `opening-balances`, `currency-revaluation`)
+- Most sensitive operations; 401/400/500 unvalidated. year-end GET runs validate+preview in parallel — untested.
+- Fix: Add `__tests__/route.test.ts` for each: 401 unauth, 400 service throw, 200 success. `vi.mock` period/year-end services.
+
+**T2. All report API routes (/api/reports/*) have no route-level tests** [high]
+- File: `app/api/reports/vat-declaration/route.ts:1` + 15 others
+- Generators tested in `lib/reports/__tests__/` but route-level 401 bypass or schema mis-mapping undetected. Legal risk.
+- Fix: Start with vat-declaration, balance-sheet, income-statement: 401, query param 400, happy-path shape `{ data: { rutor: {...} } }`.
+
+**T3. All salary API routes except /agi/submit have no tests** [high]
+- File: `app/api/salary/runs/[id]/book/route.ts:1` + ~20 others
+- `/book` integrates salary-entries producing multi-line journal entries — zero coverage at any level.
+- Fix: Unit test salary-entries.ts; route tests for book/approve/calculate: 401, 400 (wrong status), 200.
+
+**T4. lib/salary/salary-entries.ts has zero tests despite bookkeeping integration** [high]
+- File: `lib/salary/salary-entries.ts:1`
+- Errors produce unbalanced or mis-posted entries across 7210/2710/2731/2741/2742/2920/2940.
+- Fix: `lib/salary/__tests__/salary-entries.test.ts`: balanced journal assertions, account mappings, gross/net/vacation/pension paths.
+
+**T5. reverseEntry in lib/bookkeeping/engine.ts has no unit test** [high]
+- File: `lib/bookkeeping/engine.ts:333`
+- Only storno path from API; swap-debit-credit / not-posted guard / reverses_id link all untested. Route test mocks reverseEntry.
+- Fix: `describe('reverseEntry')` in engine.test.ts: throws on non-posted, creates swapped lines, sets reverses_id.
+
+**T6. Salary report files (avgifter-basis, salary-journal, vacation-liability) have zero tests** [high]
+- File: `lib/reports/avgifter-basis.ts:1` + 2 siblings
+- Legally required for AGI reconciliation + year-end semesterlöneskuld (2920/2940).
+- Fix: Test standard/youth/reduced rates; zero-row case. Pattern from `lib/reports/__tests__/vat-declaration.test.ts` with sequential mock queue.
+
+**T7. engine.test.ts omits eventBus.clear() in beforeEach** [medium]
+- File: `lib/bookkeeping/__tests__/engine.test.ts:1`
+- emit mock call count persists across tests; voucher-atomicity split file compounds issue.
+- Fix: `beforeEach(() => { vi.clearAllMocks() })` at top; `eventBus.clear()` if real bus used.
+
+**T8. match-invoice route test omits eventBus.clear** [medium]
+- File: `app/api/transactions/[id]/match-invoice/__tests__/route.test.ts:60`
+- Mock call count accumulates across tests.
+- Fix: `eventBus.emit.mockClear()` or `vi.clearAllMocks()` in beforeEach.
+
+**T9. reverse route test is missing 500 error path** [medium]
+- File: `app/api/bookkeeping/journal-entries/[id]/reverse/__tests__/route.test.ts:1`
+- 401, 400 (engine throws Error), 200 covered but 500 (non-Error throw) untested.
+- Fix: Add `it("returns 500 on unexpected error")` with non-string reject.
+
+**T10. No coverage threshold configured in vitest.config.ts** [medium]
+- File: `vitest.config.ts:1`
+- PR dropping lib/bookkeeping from 80% → 40% passes silently; CI has no --coverage flag.
+- Fix: Add `coverage: { provider: 'v8', thresholds: { lines: 80, functions: 80 }, include: ['lib/**', 'app/api/**'], exclude: [...] }`. Add --coverage to npm test in CI.
+
+**T11. lib/transactions/category-suggestions.ts has zero tests** [medium]
+- File: `lib/transactions/category-suggestions.ts:1`
+- Pure-function priority logic (rule > pattern > history); untested.
+- Fix: Test priority ordering, all-zero uncategorized.
+
+**T12. lib/bookkeeping/propose-send-lines.ts has zero tests** [medium]
+- File: `lib/bookkeeping/propose-send-lines.ts:1`
+- Pure function; ideal for unit testing; handles mixed VAT + multi-currency.
+- Fix: Tests for single-rate, mixed-rate, export, EUR invoice. Assert FormLine account_number + amount.
+
+**T13. booking-templates.test.ts weak toBeDefined assertions** [low]
+- File: `lib/bookkeeping/__tests__/booking-templates.test.ts:92,491,499,506,514,523,532,538,545`
+- `expect(t).toBeDefined()` then `t!.debit_account` — safe but confusing TypeError on failure.
+- Fix: `if (!t) throw new Error('Template not found: ...')` OR use `expect(t?.debit_account).toBe(...)` optional chaining.
+
+**T14. makeBankConnection fixture listed in CLAUDE.md but absent** [low]
+- File: `tests/helpers.ts:762`
+- Import `makeBankConnection` from @/tests/helpers returns undefined or TypeScript error.
+- Fix: Add minimal BankConnection factory.
+
+**T15. describe.skipIf in income-statement-bokio integration test** [low]
+- File: `lib/reports/__tests__/income-statement-bokio-integration.test.ts:112`
+- Silently skipped in CI; fixtures from `dev_docs/example_sie/` (gitignored).
+- Fix: Add comment documenting intentional skip; commit synthetic SIE fragment for 8999 edge case.
+
+### Performance agent
+
+**PE1. Dashboard fires 20 parallel DB queries on every page load** [high]
+- File: `app/(dashboard)/page.tsx:57-104`
+- 6 separate COUNTs + journal_entry_lines YTD join + unbounded document_attachments scan.
+- Fix: Replace document_attachments count with RPC aggregate; cap YTD fetch with `.limit()`; combine related COUNTs into single RPC.
+
+**PE2. document_attachments unbounded fetch on dashboard** [high]
+- File: `app/(dashboard)/page.tsx:99`
+- No `.limit()`; materializes tens of thousands of rows to build a Set.
+- Fix: `COUNT(DISTINCT journal_entry_id)` via RPC; or `.limit(10000)` safety cap.
+
+**PE3. No partial index on transactions(company_id) WHERE is_business IS NULL** [high]
+- File: `supabase/migrations/20260330130000...:1258-1259`
+- Uncategorized count on every page load scans all company transactions.
+- Fix: `CREATE INDEX idx_transactions_company_uncategorized ON transactions (company_id) WHERE is_business IS NULL`.
+
+**PE4. journal_entry_lines lacks company_id — RLS join required for every report query** [high]
+- File: `supabase/migrations/20240101000002_bookkeeping.sql:135-186`
+- Every report nested-loop joins across millions of lines; no composite index on (journal_entry_id, account_number).
+- Fix: Add company_id with backfill from journal_entries; composite index (company_id, account_number) OR covering index on (journal_entry_id, account_number, debit_amount, credit_amount).
+
+**PE5. Transactions page is 988-line client component with no code splitting** [medium]
+- File: `app/(dashboard)/transactions/page.tsx:1-988`
+- Imports Framer Motion + 12+ sub-components + 1,623-line booking-templates data + template-library + category-mapping + counterparty-templates. All on first render.
+- Fix: Server component shell; `dynamic()` for on-demand dialogs (SwipeCategorizationView, TransactionBookingDialog); fetch booking-templates via API instead of bundling.
+
+**PE6. BAS_REFERENCE (14k-line static dataset) imported in client component** [medium]
+- File: `components/import/OpeningBalanceEditStep.tsx:10`
+- Entire BAS 2026 chart (8 files, 14,274 lines) serialized into import-page JS bundle.
+- Fix: API endpoint `/api/bookkeeping/accounts/reference` + lazy fetch; OR `dynamic(() => import('./OpeningBalanceEditStep'), { ssr: false })`.
+
+**PE7. TransactionHistoryList — no useMemo, no virtualization** [medium]
+- File: `components/transactions/TransactionHistoryList.tsx:33-40`
+- `filter()` every render; 200+ row Cards in DOM.
+- Fix: `useMemo([transactions, searchTerm, filter])`. For 200+ items: `@tanstack/react-virtual`. React.memo on row component.
+
+**PE8. pdfjs-dist in production bundle but unused** [medium]
+- File: `package.json:49`
+- `pdfjs-dist@5.4.530` (~3 MB); no imports anywhere in source.
+- Fix: Remove; or move to disabled extension's own package.json if conditionally used.
+
+**PE9. Recharts components not lazy-loaded on reports page** [medium]
+- File: `app/(dashboard)/reports/page.tsx:16-21`
+- TrialBalanceChart + VatCompositionChart + IncomeExpenseChart eager-loaded; recharts ~200 KB gzipped.
+- Fix: `dynamic(() => import('@/components/reports/TrialBalanceChart'), { ssr: false })` for all three.
+
+**PE10. Dashboard layout runs 5 sequential DB queries (2 chained)** [medium]
+- File: `app/(dashboard)/layout.tsx:48-63`
+- team_members then teams (if team_id exists). Every page load for consultant accounts.
+- Fix: Join via `.select('team_id, role, teams:team_id(*)').eq('user_id', user.id).limit(1).maybeSingle()` — single query.
+
+**PE11. VIES VAT validation has no cache** [low] (dupe of Rate-limits RL3)
+- File: `lib/vat/vies-client.ts:112-119`
+- 10s timeout on every EU invoice creation; VIES commonly slow.
+- Fix: `next: { revalidate: 86400 }` on fetch OR vat_validation_cache table.
+
+**PE12. TransactionInboxCard re-renders on every parent state change** [low]
+- File: `components/transactions/TransactionInboxCard.tsx:36`
+- Not wrapped in React.memo; parent passes inline callbacks. 50+ motion.div re-renders per categorization.
+- Fix: `React.memo(TransactionInboxCard)`; stabilize inline callbacks with `useCallback` in parent.