docs(api,mcp): tool counts, changelog backfill, version-header honesty, lazy auth, endpoint map (#1929)

Brings the developer-facing API and MCP docs back in line with origin/main
(audit 2026-08-26). Docs only; no runtime behaviour changes.

- Tool counts: the server registers 153 tools; docs said 90+/100+/120.
  All now say "150+" (connect-claude, gnubok-mcp README, plugin README,
  mcp-server rules, CLAUDE.md, registry entry with refreshed updatedAt).
  Not derived from the tools array: lib/ must not import @/extensions/.
- REST changelog: backfilled the additive 2026-08 changes (#1909 report
  date ranges + PDFs, #1864 POST /companies, #1773 vat-declarations,
  #1405 PATCH settings, #1724/#1788 customer personal_number, #1809
  cash_account_id filter). API version date unchanged.
- Version headers: Gnubok-Deprecation is planned, not emitted; the
  Gnubok-Version request header is not read today (version.ts comment,
  versioning page, conventions overlay, regenerated skills/accounted-api).
- connect-claude Path A documents lazy auth (connector works before an
  account exists; sign-in on the first company-scoped call).
- MCP server README: real Anthropic SDK call sites, real resource URIs,
  pending-operations widget, public-tools/tasks/origin-guard/pii-guard.
  Rules file gains Lazy auth + feedback/tasks paragraphs.
- api-routes endpoint map regenerated from the filesystem (560 routes,
  55 families incl. v1, agent, reconciliation account-keyed, dimensions,
  peppol, rot-rut, webshop-orders, mileage, billing, skatteverket,
  receipt-hunt).
- gnubok-mcp/accounted-mcp: /settings?tab=api is the pre-redesign URL;
  now /settings/api (README + help hints, no version bump).

Co-authored-by: Jakob Wennberg <311770904+jakobwennberg-oss@users.noreply.github.com>
Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

claude-plugin/README.md

@@ -2,7 +2,7 @@
 
 The official plugin for [Accounted](https://app.accounted.se), the open-source Swedish bookkeeping platform. Installing it gives Claude two things at once:
 
-1. **The connection**: the Accounted MCP server (90+ bookkeeping tools, resources, and loadable skills) via OAuth. No API key needed.
+1. **The connection**: the Accounted MCP server (150+ bookkeeping tools, resources, and loadable skills) via OAuth. No API key needed.
 2. **The flows**: seven short workflow skills that follow the Swedish bookkeeping rhythm. Each one grounds itself in your company's live data, loads the product's Swedish accounting knowledge when it needs it, and stages every write for your approval. Nothing is ever booked without you saying yes.
 
 ## Install