rock f5c6bf5e5d fix: replace labeled counters with named error counters ...

- Remove ERRORS_BY_CLASS, ERRORS_BY_USER, REQUESTS_BY_USER (overengineered)
- Add simple named counters per error type per endpoint:
  memory_error_auth_failure_ingest_total
  memory_error_forbidden_ingest_total
  memory_error_rate_limited_ingest_total
  memory_error_bad_request_ingest_total
  memory_error_db_error_ingest_total
  memory_error_auth_failure_query_total
  memory_error_forbidden_query_total
  memory_error_bad_request_query_total
  memory_error_embedding_failure_query_total
  memory_error_search_failure_query_total
  memory_error_auth_failure_context_total
  memory_error_forbidden_context_total
  memory_error_lookup_failure_context_total
- LAST_ERROR_TIMESTAMP gauge for most recent error
- 515 tests passing

2026-09-13 22:12:46 +09:00

..

src

fix: replace labeled counters with named error counters

2026-09-13 22:12:46 +09:00

Cargo.toml

feat(O10): Prometheus metrics module + /metrics endpoint

2026-09-13 21:34:37 +09:00