kert 9741ce0a52 fix(observability): code-review remediation pass ...

- Trino scrape path: /v1/status (JSON) → /metrics (OpenMetrics)
- Tempo→Loki correlation: add tags mapping service.name → container
  so span clicks build {container=...} | traceID=... instead of an
  unindexed scan
- Promtail api/mail-poller/cloudflared regexes: add \b word boundaries
  so high-frequency words (error/origin/poll) don't set the labels
  on every other line
- data-lake S3 ops panel: drop `| json` (RustFS isn't JSON), use the
  s3_op stream label directly
- Add Quarkus-pair test covering the nessie|polaris combined stage

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-05-01 11:49:00 -04:00

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