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julien 0ae7e0e23d feat(portal-shell): light / dark / auto theme switcher (#86)
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## Summary

- Add a header dropdown letting users pick **light**, **dark**, or **auto** (follow the OS) color schemes. Choice persists in `localStorage`, applies on next reload, and reacts live to OS theme changes when in `auto`.
- Built on `@angular/cdk/menu` for accessible roving focus, escape-to-close, and proper `menuitemradio` semantics on the three options.
- Apply `dark:` variants across the shell (header, sidebar, main bg) and the existing two pages. No semantic-token refactor yet — that belongs in a future ADR (`--color-surface-1`, `--color-text-1`, …).

## Architecture

- [`LayoutStateService`](apps/portal-shell/src/app/state/layout-state.service.ts) grows a `themeMode: signal<'light'|'dark'|'auto'>` alongside the existing `sidebarCollapsed`, plus an `effectiveTheme` computed that resolves `auto` against the system preference. A side-effect toggles the `.dark` class on `<html>`, so every `dark:` Tailwind utility flips at once.
- Tailwind v4 dark mode is rewired to **class-based** via `@custom-variant dark (&:where(.dark, .dark *));` in `styles.css`. This overrides the v4 default (`prefers-color-scheme` only) so the user's explicit override wins over the OS preference.
- The switcher trigger reflects the **selected** mode (sun / moon / monitor), not the effective theme — so users can tell which mode they're in even when `auto` happens to resolve to the same scheme as a manual pick.

## Side-edits in the same PR (already validated in the chat)

- **Logo asset.** Replace `apf-small.svg` (94 kB — a base64-PNG wrapped in SVG markup, not actually vector) with `apf-small.png` (144×144, 7.6 kB after `sharp --kernel lanczos3 --compressionLevel 9`). Header swaps to the PNG. The wide vector `apf-portal.svg` stays around for future surfaces that want the horizontal lockup.
- **Revert FR strings** that crept into the header template — project rule (CLAUDE.md) is English-only for source artefacts; FR localisation will happen properly via `@angular/localize` (separate ADR).

## Decisions worth flagging

- **Dropdown over segmented control.** The CDK Menu pays its weight: accessible by default (proper `aria-haspopup`, focus management, ESC handling, click-outside dismissal), reusable for future header menus (user, language, notifications), and one tidy primitive rather than three competing buttons.
- **`auto` is the default,** not `light`. Most users have an OS-level preference already; respecting it is the least surprising baseline.
- **`<html>.dark` class lives at the root,** not on `<app-root>`. That's the Tailwind convention and it means CDK overlay popups (the menu itself, future dialogs) inherit the right theme without extra wiring.
- **Bundle delta +21 kB gzip** (100 → 121 kB initial). All of it is `@angular/cdk/{menu,overlay,a11y}` and the dark CSS rules. We stay well under the 300 kB budget. The CDK is already on the architecture menu (ADR-0016 — *UI stack: Angular CDK + TailwindCSS*) so this is on-strategy spend.
- **No semantic tokens yet.** The dark variants use raw Tailwind gray ramps (`dark:bg-gray-900`, etc.) instead of a `--color-surface-1` / `--color-text-1` token layer. That keeps the change tractable for now; promotion to semantic tokens deserves its own ADR with the design team in the loop.

## Accessibility (ADR-0016)

- Menu trigger has `aria-haspopup="menu"`, `aria-label` announcing the current mode + "(open menu)".
- Menu uses `role="menu"`, items use `role="menuitemradio"` with `aria-checked` — assistive tech announces the selection state correctly.
- All interactive controls keep the 44×44 px touch target.
- `prefers-reduced-motion: reduce` already covered by the sidebar transitions; theme switcher has no animations of its own.
- Contrast: dark surfaces are gray-900 + gray-800 border / gray-100 text — passes WCAG AA. Brand primary shifted to the `300` step in dark mode so the active states keep contrast against gray-900.

## What this PR explicitly does NOT do

- Tokenise the palette into semantic surface / text / border roles (next iteration, ADR-led).
- Localise UI strings (separate `@angular/localize` ADR + PR).
- Animate the theme transition (FOIT-style flicker on toggle is acceptable in v1; we can soften later with a `color-scheme` CSS transition if it bothers users).

## Test plan

- [x] `pnpm exec nx run-many -t lint test build --projects=portal-shell` — green (**33 / 33 specs**, +8 for the theme work).
- [x] Production build: **121 kB gzip initial** (was 100 kB). Under the 300 kB budget.
- [ ] Manual: toggle each of the three modes → header / sidebar / main / cards switch surface colors instantly; trigger glyph updates.
- [ ] Manual: pick `auto`, change OS theme → UI follows live (Chrome DevTools → Rendering → "Emulate CSS media feature prefers-color-scheme").
- [ ] Manual: reload after each pick → the chosen mode is restored.
- [ ] Manual: keyboard the trigger → ENTER opens menu, arrow keys navigate, ENTER selects, ESC closes; focus returns to the trigger on close.
- [ ] Manual: Lighthouse accessibility on `/` in dark mode — score unchanged from light mode.

---------

Co-authored-by: Julien Gautier <julien.gautier@apf.asso.fr>
Reviewed-on: #86
2026-05-11 03:01:11 +02:00
julien 3371fbd613 feat(portal-shell): app-shell layout with collapsable sidebar (#83)
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## Summary

- Replace the flat header+main+footer layout with a real app-shell: fixed header on top, collapsable sidebar + scrollable main below. Sidebar state (collapsed / expanded) persists across reloads via `localStorage`.
- Introduce the APF brand palette as Tailwind v4 `@theme` tokens (primary teal `#12546c`, accent orange `#f7a919`) so every utility (`bg-brand-primary-500`, `text-brand-accent-400`, `ring-brand-primary-200`, …) is available from now on.
- Add an `<app-icon>` façade backed by `lucide-angular` for v1. Logical kebab-case names already match the icomoon-sprite convention, so the future migration is a single-file change in `icon.ts` and consumers stay untouched.
- Migrate the accessibility-statement links from the (now-deleted) footer to the bottom of the sidebar.

## Decisions worth flagging

- **Static menu, permission-shaped data.** Items point to `#` placeholders in v1, except *Dashboard* which is `routerLink="/"` so the active-state styling is visible on the home page. The `MenuItem` shape already carries an optional `requiredPermissions: string[]` so the permission-aware filter (PR 2, alongside ADR-0009 auth) plugs in without restructuring.
- **`<app-icon>` over direct lucide imports.** Consumers write `<app-icon name="bell">` rather than importing the lucide pascal-case symbol. When the icomoon sprite lands, only the registry in `icon.ts` changes — templates do not.
- **Sidebar persistence via `localStorage`, not backend.** Zero round-trip, survives reloads, falls back gracefully when storage is blocked (private mode). Eventually mirrored server-side if the user-preferences feature lands.
- **Footer removed entirely.** With the sidebar carrying the FR + EN accessibility-statement links and the role badge, the bottom rail no longer earned its vertical real estate. The version badge moved out for now; it will return as part of a debug/help menu when there's a real release to surface.

## Accessibility (ADR-0016)

- Skip-link preserved (WCAG 2.4.1 *Bypass Blocks*) and restyled in the brand palette.
- Sidebar exposes named landmarks (`<nav aria-label="Sections">`, `<nav aria-label="Accessibility">`) and the collapse button uses `aria-expanded` + a descriptive `aria-label`.
- Active links carry `ariaCurrentWhenActive="page"`.
- All interactive controls (header action buttons, sidebar links/toggle) meet the 44×44 px minimum hit-target.
- Sidebar width transition is skipped under `prefers-reduced-motion: reduce`.
- Lucide SVGs are marked `aria-hidden` (decorative); accessible names live on the parent control.

## Perf (ADR-0017)

- Production build: **100 kB gzip** initial transfer (budget: 300 kB). Lucide imports are tree-shaken — only the ~18 icons actually used ship.

## What this PR explicitly does NOT do

- Wire icon-set migration to icomoon (kept as a deferred swap behind `<app-icon>`).
- Filter the menu by permission (deferred to PR 2 once the auth flow lands).
- Replace the avatar placeholder with a real user menu (waits on ADR-0009).
- Implement the search input behavior (placeholder only; needs a search backend).

## Test plan

- [x] `pnpm exec nx run-many -t lint test build --projects=portal-shell` — green (19 / 19 specs).
- [x] Production build under bundle budgets (100 kB gzip initial).
- [ ] Manual: load `/`, confirm Dashboard appears active in the sidebar, collapse → reload → still collapsed, focus the address bar then Tab → skip-link visible, keyboard-traverse the sidebar.
- [ ] Manual: `prefers-reduced-motion: reduce` → no width animation when toggling.
- [ ] Manual: zoom to 200 % → no horizontal scroll, header search hides at narrow widths (`md:` breakpoint).

---------

Co-authored-by: Julien Gautier <julien.gautier@apf.asso.fr>
Reviewed-on: #83
2026-05-11 00:36:41 +02:00
julien 0d31937aeb feat(portal-shell): replace nx-welcome with real shell and home + budgets per ADR-0017 (#74)
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## Summary

Cuts the Nx scaffold's `NxWelcome` page (938 LOC of placeholder markup) and lays down the actual portal layout — header, main, footer landmarks plus a skip link — with a real home page and the two RGAA-mandated accessibility statement routes. Bundle budgets in `project.json` are tightened to match ADR-0017.

## What lands

**Layout shell** (`apps/portal-shell/src/app/`):

- `components/header/` — brand link + primary nav landmark stub
- `components/footer/` — accessibility statement links (FR + EN) + version badge
- `app.html` / `app.scss` — flex column with sticky footer + skip link to `#main-content` (WCAG 2.4.1)

**Pages**:

- `pages/home/` — welcome heading + "system status" widget that fetches `/api/health` from the BFF. Doubles as a smoke test of the full SPA → BFF stack: CORS, OTel trace propagation, Pino log correlation. After page load, http://localhost:16686 should show one trace whose root span is the SPA `document_load`, with a child `fetch` span that has its own child `HTTP GET /api/health` BFF span.
- `pages/accessibility/` — single component, content selected by route data (`lang: 'fr' | 'en'`). Mounted at `/accessibility` (en) and `/accessibilite` (fr). v1 carries placeholder copy explicitly framed as "awaiting APF user panel review" — RGAA + ADR-0016 require the routes to exist; the substantive statement (audit grid, gaps list, remediation plan) lands separately.

**Routing & wiring**:

- `app.routes.ts` adds the three routes, all lazy-loaded.
- `app.config.ts` adds `provideHttpClient(withFetch())` so HttpClient delegates to the patched browser `fetch` and the W3C `traceparent` header propagates automatically (per ADR-0012 phase 2).
- `nx-welcome.ts` removed; `app.ts` no longer imports it.

**Bundle budgets** (`apps/portal-shell/project.json`):

| Type                | Limit (raw)  | ADR-0017 (gzip) |
| ------------------- | ------------ | --------------- |
| `initial`           | 1 MB         | ≤ 300 KB        |
| `anyScript`         | 300 KB       | ≤ 100 KB / chunk |
| `anyComponentStyle` | 6 KB         | ≤ 6 KB           |
| `bundle "styles"`   | 150 KB       | ≤ 150 KB         |

`maximumWarning == maximumError` so an overshoot fails the build (matching `type: "error"` in spirit). Angular CLI compares **raw** sizes; ADR-0017 §Confirmation is updated to record the gzip→raw translation and the deferred follow-up that will add a CI check on the actual gzipped transfer size (Angular has no native gzip-mode budget).

## Verified locally

- `pnpm exec nx run-many -t lint test build` → 8 projects green; **12 tests pass** for `portal-shell` across 5 specs (App, Header, Footer, Home, AccessibilityStatement).
- `pnpm nx build portal-shell --configuration=production` → initial bundle **326.99 KB raw / 89.82 KB transfer** (gzip) — well under the ADR-0017 300 KB gzip target. Lazy chunks: home 2.66 KB, accessibility 2.90 KB.
- `pnpm audit` clean.

After `./infra/local/dev.sh up observability` + `pnpm nx serve portal-bff` + `pnpm nx serve portal-shell`, opening http://localhost:4200 shows the new layout, the system-status widget connects to the BFF, and the corresponding trace appears in Jaeger.

## Out of scope (separate PRs)

- **Real RGAA audit content** — APF user-panel review.
- **Design tokens system** in `libs/shared/tokens`.
- **Reusable UI primitives** in `libs/shared/ui`.
- **User-preferences panel** (ADR-0016 §"User-preferences panel").
- **i18n machinery** (`@angular/localize`) — for v1 the FR/EN copy is inlined and route-driven; real i18n is a separate ADR.
- **Env-config** (Angular `environment.ts`) — the hard-coded `http://localhost:3000/api/health` will move there alongside the OTLP endpoint when the env-config PR lands.
- **CI gzip-transfer-size assertion** to complement the raw-size Angular budgets.

## Test plan

- [ ] CI green on this PR.
- [ ] Local: home page renders, system-status widget transitions from "Checking the backend…" to the success state when the BFF is up; falls back to "Backend unreachable" with the BFF stopped.
- [ ] `/accessibility` and `/accessibilite` render the matching language with `<article lang="en|fr">`.
- [ ] Skip link reachable via Tab from address bar; clicking it focuses `#main-content`.
- [ ] Production build size summary roughly matches the figures above (initial total ≈ 90 KB transfer).

---------

Co-authored-by: Julien Gautier <julien.gautier@apf.asso.fr>
Reviewed-on: #74
2026-05-10 02:38:42 +02:00
Julien Gautier bea5e1954f chore: generate portal-shell and portal-bff apps per ADR-0004 / ADR-0005
Add the @nx/angular, @nx/nest, @nx/vite, @nx/eslint plugins, then
generate the two apps. Adjust the empty-template tsconfig.base.json
to be Angular-compatible (drop project references and customConditions
that the empty-template defaults to but Angular doesn't support; keep
the strict-TS extensions from ADR-0004).

apps/portal-shell (Angular 21):
- standalone APIs, routing, SCSS, esbuild
- vitest-angular as unitTestRunner, playwright for e2e
- strict mode
- tags scope:portal-shell, type:app
- app.config.ts wired with provideZonelessChangeDetection() per
  ADR-0004 (Angular 21 + Nx 22 generates without zone.js by default)

apps/portal-bff (NestJS 11):
- Express adapter (default per ADR-0005)
- Jest as unitTestRunner
- tags scope:portal-bff, type:app
- main.ts wired with a global ValidationPipe configured
  whitelist + forbidNonWhitelisted + transform per ADR-0005
- Phase-2 security additions (helmet, CORS, sessions, CSRF, rate
  limit, auth guards, error filter) deferred to their respective
  ADRs - placeholder comment in main.ts

Workspace dependencies: class-validator + class-transformer added
(required by NestJS ValidationPipe at runtime). Nx-generated
.gitignore additions (.angular, __screenshots__) merged into ours.
.vscode/extensions.json and launch.json added by Nx are kept (do not
override our existing settings.json).
2026-04-30 16:12:42 +02:00