- Forward the 5 usage_* claims through fluxfiles_token's $usage array, Laravel/
  WordPress overrides, and Node createToken (camelCase).
- i18n: a "usage" namespace (title/refresh/by_type/top_folders/warning/critical
  + type labels) in all 16 locales — toJson ships only the active locale, so the
  keys must exist in each; verified key-parity with en.
- Laravel proxy: add the GET usage route + controller method. Unlike /img and
  /stream (byte-serving, intentionally unproxied), /usage is an authenticated
  claims-driven route, so the proxy SHOULD expose it. Proxy mode recomputes each
  call (one listContents pass); the standalone core endpoint adds the file cache.
- Bump laravel/wordpress floor to ^0.2.25 (the controller now reads the usage_*
  Claims props); the adapter-core-floor guard skips until that tag is released.

Tests: core/laravel/wordpress/node forwarding; i18n parity. Full core + usage
e2e green.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>