Addresses errcheck, gosec, revive, staticcheck, and unused findings
across the codebase (unchecked error returns, unsafe file inclusion
warnings on operator/test-controlled paths, missing package comments,
unused parameters, deprecated API usage). Also fixes two suppression
comments that were silently no-ops due to wrong syntax (#nosec needs
a leading '#', nolint reasons need '//' not '--').
With the backlog clear, drop continue-on-error from the CI lint job
per the plan left in b4b4806.
Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
- Store SHA-256 digests (key_hash + key_preview) instead of raw keys, in
both the in-memory store and Postgres; migrate legacy plaintext rows in
place and drop the plaintext column.
- Fix TEXT[] scans that failed at runtime (missing pq.Array) in
GetKey/ListKeys/LoadAllKeys.
- Load persisted keys at startup (InitializeFromDatabase was never called)
and fall back to the database on cache miss, so issued keys survive
restarts.
- Make HybridKeyStore.CreateKey genuinely write-through: cache is only
updated after a successful DB write.
- Guard nil database backend (auth enabled without DB previously panicked
on key creation) and degrade to in-memory operation.
- Persist bootstrap admin keys when a database is configured.
- Record real audit-log details as JSON and log audit failures instead of
silently dropping them; add DB pool limits and ping timeout.
- Sentinel errors matched with errors.Is; unit tests for hashing,
write-through ordering, DB fallback, and nil-DB operation.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>