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Author SHA1 Message Date
8a68ef68e7 Add PDF export via Gotenberg (#67)
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Server-side PDF export for reading/sharing (ADR 0009), rendered by a new
internal Gotenberg (headless Chromium) sidecar.

- Sidecar: `gotenberg/gotenberg:8` in the compose stack (internal, pinned,
  healthcheck); api `GOTENBERG_URL` env; a `renderer` readyz check at
  warning-level (mirrors the converter) so PDF export degrades gracefully when
  Gotenberg is down without failing readyz.
- Export HTML: `buildPdfHtml` renders a self-contained document (no app chrome)
  — the page's content with images inlined as data URIs, the pond's fonts
  inlined as base64 `@font-face` + applied via CSS variables (ADR 0016), print
  CSS (A4, page-break rules, a title header), and page numbers from Gotenberg's
  footer. Plugin-block fallbacks are a marked TODO(#79) for M7.
- Fonts in the api image: the api Dockerfile now bakes the font catalog in
  (`build-fonts.mjs` with FONTS_OUT) so the exporter can read a pond's chosen
  WOFF2 and inline them; a missing file falls back to the system stack.
- Job flow: `POST /pages/:id/export {format: pdf}` builds the HTML (read
  permission checked by the guard) and enqueues an `export_pdf` job on the #62
  queue with the HTML as input; the worker branches `to === 'pdf'` to the
  `GotenbergRenderer` (html → pdf) instead of pandoc, retrying an unreachable
  sidecar and failing a refused render (`renderer_unavailable`/`render_failed`,
  de+en). The client polls and downloads `GET /jobs/:id/result`.
- Frontend: the page-menu PDF button is now a real export (PDF added to
  EXPORT_FORMATS; the disabled placeholder removed).
- Tests: export.service.db PDF cases (HTML has title/font-variable/inlined
  image; renderer-down fails with `render_failed`); e2e PDF export self-skips
  without a Gotenberg sidecar (like the .docx case). Verified locally against
  real Gotenberg — a valid PDF with the pond font embedded.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EwZ4jR4KFAPvpjWevfUGX1
2026-07-10 12:11:12 +02:00
f500198c5d Add per-pond fonts: catalog, build, application, and admin UI (#66)
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Self-hosted Google Fonts with per-pond selection (ADR 0016), the GDPR
"zero external requests" posture (security.md, CSP `font-src 'self'`).

- Catalog: a curated 15-family OFL/Apache list in shared (family, weights,
  category, license, google-webfonts-helper id). `deploy/fonts/build-fonts.mjs`
  validates every entry has license info (fails the build otherwise),
  downloads the WOFF2 weights into apps/web/public/fonts/ (gitignored), and
  generates the @font-face stylesheet — run at image build time from the web
  Dockerfile (with retries), never from a visitor's browser.
- Application: PondFontScope sets --font-heading/body/mono (+ weights) from
  pond.settings.fonts on the editor + read view; the existing global CSS
  already reads those custom properties, so headings/body/code re-resolve to
  the pond's fonts. A pond with no settings arrives with the defaulted values
  (Roboto 400 / Roboto 200 / Fira Code), so the vision defaults always render.
- Admin UI: pond-settings 'Appearance' section — three slots (family + weight)
  with a live preview, Pond-Admin-gated (fonts added to updatePondInputSchema
  and merged in PondsService.update); a font catalog attribution page (/fonts)
  listing families and licenses. New `font` i18n namespace (de+en).
- CSP: strict Content-Security-Policy in nginx.conf (default-src 'self';
  font-src 'self'; style-src 'self' 'unsafe-inline'; script-src 'self'; …) —
  the app's scripts are all external files, inline styles cover CSS variables.
- Tests: shared catalog-integrity unit test (the invariant the build enforces);
  e2e fonts pack — no request leaves the origin when rendering a pond (the GDPR
  network assertion), a font choice applies to a page and persists, and a pond
  without settings renders the defaults.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01EwZ4jR4KFAPvpjWevfUGX1
2026-07-10 11:16:29 +02:00