fix(i18n): green CI — settings mock + canonical text token

- settings.test.ts mocks @fusion/core; add SUPPORTED_LOCALES to the mock so the
  new language enum import resolves (shard 1).
- LanguageSelector.css used the banned --text-secondary token; switch to the
  canonical --text-muted (shard 2 text-token-canonicalization guard).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

packages/cli/src/commands/__tests__/settings.test.ts

@@ -25,6 +25,7 @@ vi.mock("@fusion/core", () => {
   return {
     GlobalSettingsStore: vi.fn(),
     DEFAULT_SETTINGS,
+    SUPPORTED_LOCALES: ["en", "zh-CN", "zh-TW", "fr", "es"],
     resolveWorktrunkSettings: (globalValue: any, projectValue: any) => ({
       enabled: projectValue?.enabled ?? globalValue?.enabled ?? false,
       ...(projectValue?.binaryPath ?? globalValue?.binaryPath ? { binaryPath: projectValue?.binaryPath ?? globalValue?.binaryPath } : {}),

packages/dashboard/app/components/LanguageSelector.css

@@ -9,7 +9,7 @@
   font-weight: 600;
   text-transform: uppercase;
   letter-spacing: 0.04em;
-  color: var(--text-secondary, #888);
+  color: var(--text-muted, #888);
 }
 
 .language-options {