[codex] add auditable retry action automation

[RidhanPar]

Summary

• add authenticated FastAPI prediction-to-approval-to-retry action service
• add JWT/RBAC, audit records, trace IDs, idempotency, and approval-safe optional LLM planning
• add importable n8n workflow, Docker Compose stack, and Render PostgreSQL/API Blueprint
• split the dashboard entrypoint and add automation evidence page/API client
• add 7-control governance evaluation, integration tests, CI checks, and reviewer-facing docs

Verification

• pytest -q --basetemp .pytest-local-run: 24 passed
• focused API/deployment tests: 8 passed
• governance evaluation: 7/7, 100% declared controls
• Ruff: passed
• Python compile: passed
• Streamlit and API HTTP startup: passed
• Docker Compose config: passed

Evidence boundary

The 100% score is specified-gap/control coverage, not perfect model accuracy or a hiring guarantee. Model and financial results remain explicitly labeled synthetic scenarios.