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0c85293830 Public REST API v1: personal access tokens, instance switch + per-pond opt-in (#104)
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Token-authenticated machine access at /api/public/v1 — the foundation for
the built-in MCP endpoint (#105).

Personal access tokens:
- api_tokens table (SHA-256 hash, scope read|write, optional pond
  restriction, expiry, revocation, throttled last-used) + migration;
  secrets are dt_pat_<random>, shown exactly once
- lifecycle endpoints under /users/me/api-tokens (session-only — a leaked
  token can never mint more tokens) with audit entries
  api.token_created/api.token_revoked
- settings UI section (create with scope/expiry/pond restriction,
  one-time reveal with copy, list with status + revoke), de+en

Activation (404 semantics per #60 on both levels):
- instance setting api.enabled (default off, admin settings switch)
- pond setting apiEnabled (default off, pond settings toggle; the
  PondsService settings-merge learned the key — the #92 lesson)

Surface (/api/public/v1, excluded from the SPA's global prefix):
- me, ponds, pages (list/read as Markdown+HTML, create from Markdown via
  the shared pipeline, PATCH title/content, DELETE to trash), search
  (permission-filtered + narrowed to exposed ponds, highlights as **…**),
  markdown ZIP export, labels (tree, create/rename/recolour/move/delete,
  assign/unassign), comments (threads, create, resolve/reopen)
- content replacement travels the collab-owned document path: the new
  state lands as a MANUAL version "API update", then the established
  restore NOTIFY applies it — open editors converge, history stays
  append-only, no second lineage (VersionsService.replaceContent)
- hand-maintained OpenAPI 3.1 document at /openapi.json, pinned to the
  controller by a route-coverage test in both directions

Enforcement:
- PublicApiGuard: instance switch → bearer PAT auth (request.user is the
  token's user) → per-token rate limit (429 + Retry-After) → scope
  (403 scope_required) → pond opt-in + token restriction
- the shared PermissionGuard then applies the unchanged permission model;
  PageParamSource gained pondSlugParam for the slug+slug routes
- no cookies anywhere → no CSRF surface (pinned by a hostile-Origin test)
- every write audit-logged as api.write with the token attributed

Tests/verification:
- 12-test e2e pack: lifecycle, switches, permission matrix
  (reader/editor/outsider × scopes), restriction, page roundtrip incl.
  restore-NOTIFY assertion, labels, comments incl. policy, search
  narrowing, ZIP export, rate limit; full api suite 60/60 green
  (quota fixture via per-user override — never the instance default)
- new collab-pack test proves an open editor converges onto an API
  content replacement (green against a local seeded stack)
- UI smoke against the built SPA: token create/reveal/revoke, pond
  opt-in persists, admin switch persists (10/10)
- docs/self-hosting/public-api.md + README link

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EwZ4jR4KFAPvpjWevfUGX1
2026-07-12 11:17:03 +02:00