Add public cache key, logging, token cache TTL

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	api	9506a0e	Commit Preview URL Branch Preview URL	May 05 2026, 03:48 AM

[Copilot]

Pull request overview

This PR improves cache behavior and error handling across the API worker by (1) normalizing public cache keys to avoid cache fragmentation from query strings, (2) adding/adjusting logging and sanitizing user-facing 500 errors, and (3) introducing a TTL-based in-memory cache for the /versions/v1/update bearer token to reduce repeated KV reads.

Changes:

• Add publicCacheKey / normalizePublicCacheKey and apply it to Hono cache middleware for public versions and stats routes.
• Add centralized logging for unhandled errors and avoid exposing internal exception messages in API responses (app + central-alerts).
• Add a 60s TTL to the in-memory UPDATE_TOKEN cache and expand tests around token rotation and error sanitization.

Reviewed changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
src/lib/cache.ts	Adds helpers to normalize public cache keys (drops query/hash) and a Hono keyGenerator.
src/services/versions/v1/index.ts	Adds token-cache TTL for update auth and uses publicCacheKey for cached public routes.
src/services/stats/v1/index.ts	Uses publicCacheKey for cached stats routes to avoid query-string cache fragmentation.
src/services/central-alerts/v1/index.ts	Logs database errors while returning a generic error message to clients.
src/app/index.ts	Logs unhandled errors and returns a consistent generic “Internal Server Error” response.
test/lib/cache.test.ts	Adds unit coverage for cache-key normalization behavior.
test/services/versions/v1/index.test.ts	Adds a token-rotation/TTL test and resets the in-memory token cache between tests.
test/services/versions/v1/errors.test.ts	Verifies generic 500 responses don’t expose internal details and resets token cache between tests.
test/services/versions/v1/middleware.test.ts	Resets token cache between tests to avoid cross-test contamination.
test/services/central-alerts/v1/index.test.ts	Adds coverage ensuring DB exception details are not exposed in responses.
test/integration/versions/index.test.ts	Resets token cache between integration tests.
test/integration/app.test.ts	Resets token cache between full-app integration tests.
test/app/index.test.ts	Resets token cache between app-level tests.

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