- Add full test suite for frontend.ts (POST /log and POST /error)
- Add error-path tests to all route handlers to cover catch blocks
triggered by Prisma rejections
- Add non-Error throw tests to cover the `new Error(String(error))`
ternary false branch in middleware, services, and route catch handlers
- Suppress unreachable outer catch in about.ts with v8 ignore (fetchReleases
swallows all errors internally, making the outer catch genuinely dead code)
