refactor(i18n): replace compiled .ts catalogs with direct .po imports

- Remove `lingui compile` / `i18n:compile` script — Vite and Metro LingUI plugins now compile `.po` files on the fly at dev/build time; no manual compile step needed
- Import `.po` files directly in `@sofa/i18n` (`./po/en.po` etc.) and add `po.d.ts` ambient module declaration so TypeScript accepts them
- Add `fallbackLocales: { default: "en" }` and `lineNumbers: false` to `lingui.config.ts`; prefix catalog paths with `<rootDir>` for correctness
- Derive `SupportedLocale` and `SUPPORTED_LOCALES` from `LOCALE_INFO` in `locales.ts` to eliminate the circular import between `index.ts` and `locales.ts`
- Update Crowdin config to use `project_id_env` instead of a hardcoded ID, drop `languages_mapping` (no longer needed), and add `preserve_hierarchy: true`
- Add a daily cron trigger (`0 6 * * *`) to the Crowdin GitHub Actions workflow and drop the now-redundant compile step from it
- Update docs and `AGENTS.md` to reflect that no compile step is required after `i18n:extract`

.github/workflows/crowdin.yml

@@ -6,6 +6,8 @@ on:
     paths:
       - "packages/i18n/src/po/en.po"
   workflow_dispatch:
+  schedule:
+    - cron: "0 6 * * *"
 
 permissions:
   contents: write
@@ -56,13 +58,10 @@ jobs:
           CROWDIN_PERSONAL_TOKEN: ${{ secrets.CROWDIN_PERSONAL_TOKEN }}
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Compile catalogs
-        run: bun run i18n:compile
-
-      - name: Commit compiled catalogs
+      - name: Commit updated catalogs
         run: |
           git config user.name "github-actions[bot]"
           git config user.email "github-actions[bot]@users.noreply.github.com"
           git add packages/i18n/src/po/
-          git diff --cached --quiet || git commit -m "chore(i18n): compile updated translation catalogs"
+          git diff --cached --quiet || git commit -m "chore(i18n): update translation catalogs"
           git push