fix(auto): address PR #2131 review issues

- Fix OAuth expiry handling for ISO strings in virtualFactory.ts
- Move AutoRoutingBanner test from src/ to tests/unit/shared/components/
- Remove mock metrics from analytics endpoint, return only real data
- Fix error handling for bare 'auto' prefix in chat.ts (check isAutoRouting)
- Update vitest.config.ts to include tests/unit/**/*.test.tsx pattern

vitest.config.ts

@@ -13,6 +13,7 @@ export default defineConfig({
       "src/lib/memory/__tests__/**/*.test.ts",
       "src/lib/skills/__tests__/**/*.test.ts",
       "tests/unit/encryption.test.ts",
+      "tests/unit/**/*.test.tsx",
       "open-sse/**/__tests__/**/*.test.ts",
       "open-sse/services/**/__tests__/**/*.test.ts",
       "tests/e2e/ecosystem.test.ts",