Files
Louis King c8cc049651 feat(web): React SPA shell, markdown migration, vitest coverage, v0.17 docs
- Migrate footer, error page, and announcements to React; slim Jinja2
  shell to SEO/head/config/fonts/theme-init only
- Replace server-side markdown rendering with react-markdown (removes
  Python `markdown` dependency); custom pages + announcements ship
  raw markdown to the client
- Add heading-anchor deep-links with CSS override for inherited colors
- Extract pure helpers from pages (messageHelpers, mapMath, routesHelpers,
  profileHelpers, packetHelpers, packetGroupHelpers) for unit testability
- Add comprehensive vitest suite: 59 test files, 315 tests covering all
  components, pages, and extracted helpers; global i18next mock + matchMedia
  stub + AbortController-aware apiMock in test infrastructure
- Fix SortableTable test DOM nesting (<th> inside proper <table> context)
- Update docs for v0.17.0: upgrading.md release notes, README.md project
  structure + build description, i18n.md path fix
- Delete REACT_MIGRATION.md (migration complete, unreferenced)
- Add announcements dismiss-persistence + custom-page 404 E2E specs
2026-07-22 22:55:20 +01:00
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