Add/pdf and templates (#705)

* fix(invoices): apply configured voucher series to payments + preview next voucher

The booking engine resolves the series from
default_voucher_series_per_source_type, but the global "Standardserie"
dropdown wrote a separate field the engine ignored, and cash-method invoice
payments (invoice_cash_payment) weren't exposed in settings — so configured
series were silently dropped to "A".

- Expose cash/private payment source types in the per-source-type form
- Write the global default through to the map on save, keeping overrides
- Resolve voucher-sequences/next by source_type (+date) to match the engine
- Show the upcoming voucher (V2) in the payment dialog title
- Share resolveInvoicePaymentSourceType so preview and booking can't drift

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* fix(salary): keep AGI panel in sync with Skatteverket signing state

The AGI panel mixed run-scoped generation state (agi_generated_at,
agi_declarations) with period-scoped submission state (extension_data
agi_submission_{period}), so the two could drift and present
contradictory UI. Reconcile them:

- Auto-detect a Mina Sidor BankID signature: while awaiting_signing,
  poll /agi/kvittenser on mount and on tab refocus so the panel flips
  to "signed" (hiding the signing actions) without a manual
  "Hamta kvittens" click.
- Warn instead of offering to sign when the locked granskningsunderlag
  predates the run's latest AGI generation (draftIsStale) — avoids
  filing superseded figures.
- Self-heal a stale "AGI-XML saknas" error once the run's AGI is
  (re)generated out-of-band (MCP/API/other tab).
- Refetch the salary run on tab focus so agi_generated_at reflects
  out-of-band generation without a hard reload.
- /agi/lasUpp now clears the cached agi_submission_{period} record, so
  unlocking drops the panel back to the pre-submission state instead of
  stranding it on a released "redo att signeras" draft.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* feat: Implement VAT registration handling and invoice item line types

- Added VAT registration check in commitCreateInvoice to set VAT rate to 0% for non-VAT registered companies.
- Updated invoice creation logic to reflect 'exempt' VAT treatment and adjusted related fields accordingly.
- Introduced support for free-text and blank spacer rows in invoice items by adding a new line_type field.
- Enhanced invoice and credit note handling to accommodate new line types.
- Added new localized messages for text rows in English and Swedish.
- Created tests for salary run approval logic, ensuring bank details are validated correctly.
- Implemented effective net payout calculation for salary runs, considering tax overrides.
- Added SQL migrations to support new invoice item line types and accounting method awareness for linking invoices to vouchers.

* feat(articles): artikelregister with revenue account + VAT rate per article

Article register (non-inventory) with per-article VAT rate and optional
BAS class-3 revenue-account override. Includes API routes, UI pages,
MCP tools, pending-operation staging, and the activate-or-create
account flow (ACCOUNTS_NOT_IN_CHART -> ActivateAccountsDialog,
unknown numbers -> AddAccountDialog) reusing the journal entry UX.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* feat(bookkeeping): no-doc-required batch + bulk-missing endpoints

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* feat(payments): supplier payment lines + cash-method invoice matching

Shared payment-line proposal for supplier invoices, improved
match-invoice/match-supplier-invoice flows (kontantmetoden-aware),
and voucher-link support without requiring a 151x clearing entry.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* feat(bookkeeping): new journal entry dialog, SIE import tweaks, misc

New journal entry dialog component, journal list/page updates,
invoice editor updates, SIE import adjustments, transaction ingest
and api-key tweaks, pr-agent workflow update.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* feat(invoices): implement tax reduction features and localization updates

* feat(tests): add VAT registration gate to pending operations commit tests

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

types/index.ts

@@ -860,6 +860,12 @@ export interface InvoiceItem {
   // Order
   sort_order: number
 
+  // Line kind. 'product' is a normal billable line; 'text' is a free-text or
+  // blank spacer row that carries only a description — no amounts, excluded from
+  // totals and bookkeeping. Optional in TS for legacy rows (defaults to
+  // 'product' in Postgres).
+  line_type?: 'product' | 'text'
+
   // Description
   description: string
 
@@ -1073,6 +1079,9 @@ export interface CreateInvoiceInput {
 }
 
 export interface CreateInvoiceItemInput {
+  /** 'text' rows carry only a description (may be empty for a spacer) and are
+   *  excluded from totals and bookkeeping. Defaults to 'product'. */
+  line_type?: 'product' | 'text'
   description: string
   quantity: number
   unit: string