fix(helm): align Hindsight probes with DB pressure remediation

[allyblockcast]

Summary

• Align Helm defaults with the live Hindsight remediation contract: API liveness/readiness on /version and worker liveness/readiness on /metrics.
• Set worker metrics probe timeout to 30s after live /metrics probes timed out at the prior 5s setting.
• Keep worker batch size 1, worker max slots 2, consolidation reservation 1, retain slots 1, and retain max concurrency 1 in chart defaults.

Live rollout evidence

• Patched live namespace objects directly for BLO-14004: deployment/hindsight-api and statefulset/hindsight-worker.
• Final live state after timeout rollout: api 1/1 ready; worker 4/4 ready; all fresh api/worker pods restart count 0 after the short soak.
• Final live settings verified with kubectl: API /version liveness+readiness; worker /metrics liveness+readiness; worker retain slots 1; worker probe timeout 30s.

Verification

• helm lint helm/hindsight
• helm template hindsight helm/hindsight
• helm template hindsight helm/hindsight --set worker.enabled=true

Known limitations

• ./scripts/hooks/lint.sh could not run in the Paperclip runtime because uv is not installed: ./scripts/hooks/lint.sh: line 39: uv: command not found.
• This runtime lacks pods/log permission in the hindsight namespace, so API/worker log verification needs QA/operator re-run.
• Existing namespace events include rollout startup readiness misses and one PostgreSQL pg_isready timeout after rollout; no fresh api/worker pod restarts were observed.

[allyblockcast]

🔗 Paperclip issue: BLO-14004

[allyblockcast]

🔗 Paperclip issue: BLO-14004

[allyblockcast]

@ally please review this replacement clean PR for BLO-14004/BLO-13560. Focus: whether the Helm defaults now match the live remediation contract (/version API probes, /metrics worker probes, 30s worker metrics probe timeout, worker max slots 2 with consolidation/retain slots 1 each) and whether any Helm upgrade would still reintroduce the live drift QA found.

[allyblockcast]

@ally review requested for BLO-14004 before merge. Please focus on the Helm chart probe contracts (/version for API, /metrics for worker), worker DB-pressure concurrency values (batch size 1, max slots 2, consolidation reservation 1, retain concurrency 1), and StatefulSet-to-Deployment migration safety. CI is green at c81ae00c.