chore(ci): check icons and i18n

.github/workflows/ci.yml

@@ -35,6 +35,10 @@ jobs:
               - '.grit'
               - '.stylelintrc.json'
               - 'jsconfig.json'
+              # Audit scripts that gate frontend correctness — touch
+              # them and the frontend job must re-run.
+              - 'tools/check-missing-translations.py'
+              - 'tools/check-icons.py'
             backend:
               - 'src/**'
               - 'Cargo.toml'
@@ -75,6 +79,24 @@ jobs:
       - name: Run TypeScript check
         run: tsc -p jsconfig.json --noEmit
 
+      - name: Check locale files are at parity with en.json
+        # Python 3 stdlib only — no setup step needed.
+        # `--check-only` keeps the CI log terse; failures still surface
+        # via exit code (the script returns 1 when any non-English
+        # locale is missing a key present in en.json). Mirrors the
+        # `--check-only` flag on `tools/check-icons.py` below.
+        # Run locally without --check-only to see the missing keys.
+        run: python3 tools/check-missing-translations.py --check-only
+
+      - name: Check FA icons referenced in static/ are registered
+        # `--check-only` skips the Font-Awesome clone and the icons.js
+        # patch — it just scans `fas fa-<name>` references and diffs
+        # them against OxiIcons. Exit 1 if any used icon is absent
+        # from the registry. Run locally without --check-only to
+        # auto-add missing entries from a checked-out Font-Awesome
+        # source.
+        run: python3 tools/check-icons.py --check-only
+
   rust-fmt:
     name: Rustfmt
     needs: changes