Continue ADR-0019: replace the `/accessibility` + `/accessibilite`
twin routes with a single canonical `/accessibility` path whose
content is i18n-marked in templates. The per-locale build (en/fr)
already inlines the right copy — the route data + `copy()` service
indirection is no longer needed.
What changes:
- `AccessibilityStatement` loses its `ActivatedRoute` injection, its
`Lang` discriminator and the `COPY` lookup table. The component is
now a plain shell over the template.
- `accessibility.html` carries the title + intro + status panel
strings as `i18n="@@page.accessibility.*"` markers; six new
trans-units in `messages.fr.xlf` provide the French copy
(verbatim from the old `COPY.fr` block, kept identical so the page
reads the same in FR).
- `app.routes.ts` declares the single canonical route and keeps
`/accessibilite` as a `redirectTo: 'accessibility'` for backward
compatibility with existing bookmarks. Drops the `data.lang`
payload — no longer consumed.
- `footer.html` collapses the dual link (`Accessibility` /
`Accessibilité`) into one i18n-marked link
(`@@footer.accessibilityLink`). EN bundle reads "Accessibility
statement"; FR bundle reads "Déclaration d'accessibilité".
The path stays in English across both locales for now
(`/{en,fr}/accessibility`). Translating route segments
(`/fr/declaration-d-accessibilite`) is a future refinement that needs
either a custom URL serializer or per-locale route trees — not worth
the complexity at this scale.
Specs:
- `accessibility.spec.ts` loses the `lang`-based tests and asserts
on the rendered EN source content + the amber-panel structure
(specs run in the source locale).
- `footer.spec.ts` asserts on the single accessibility link and the
absence of the historical `/accessibilite` href.
Test plan / verification:
- 35/35 specs pass (was 36; one obsolete `lang` fallback test
removed).
- Production build emits both locales; FR chunk contains "Statut",
"Déclaration", FR intro/panel bodies, and no leftover English from
the swept strings.
Julien Gautier