[PROD-010] Persisted parity validation

[ktalpay]

Task ID: PROD-010
Lane: parity
Status: merged
Agent: parity-agent
Depends on: PROD-009

Goal:
Validate persisted PostgreSQL output parity across runtime paths for Phase 1 source families.

Scope:

• Compare persisted source-family master/detail output.
• Compare source-family year-state behavior.
• Compare idempotent rerun behavior.
• Use opt-in PostgreSQL validation only.
• Keep default tests safe.
• Do not claim final production-ready in this task.

Non-goals:

• No uncontrolled live network calls.
• No production credentials.
• No destructive DB operations.
• No broad runtime rewrite.
• No final production-ready verdict.

Task-ID: PROD-010

[github-actions]

Agent Task Watcher updated task status.

Detected task: PROD-010
Merged PR: #633
Task issue status: status:in-progress -> status:merged

Downstream task update summary:

No dependent tasks were declared in Unblocks:.