feat: actualize policy-layer rollover and annual-planning views

[Euda1mon1a]

Summary

• add program-policy-snapshot and program-calendar-anchor rollover endpoints for annual-planning use
• expand annual-planning readiness and review surfaces to consume program policy snapshots, recurring calendar anchors, and policy-layered institutional events together
• update tracker docs/changelog and add a branch note describing scope, validation, and remaining hardcoded-policy follow-up

Validation

• backend/.venv/bin/python -m ruff check backend/app/api/routes/program_calendar_anchors.py backend/app/api/routes/program_policy_snapshots.py backend/app/schemas/annual_rotation.py backend/app/schemas/program_calendar_anchor.py backend/app/schemas/program_policy_snapshot.py backend/app/services/annual_rotation_service.py backend/app/services/program_calendar_anchor_service.py backend/app/services/program_policy_snapshot_service.py backend/tests/routes/test_program_calendar_anchors.py backend/tests/routes/test_program_policy_snapshots.py backend/tests/services/test_annual_rotation_service.py
• backend/.venv/bin/python -m pytest backend/tests/routes/test_program_policy_snapshots.py backend/tests/routes/test_program_calendar_anchors.py -q
• backend/.venv/bin/python -m pytest backend/tests/routes/test_program_policy_snapshots.py backend/tests/routes/test_program_calendar_anchors.py backend/tests/services/test_annual_rotation_service.py -k "test_coordinator_can_get_annual_planning_readiness" -q
• PATH="/Users/aaronmontgomery/Autonomous-Assignment-Program-Manager/backend/.venv/bin:$PATH" npm run generate:types
• npm test -- --watchAll=false frontend/src/hooks/__tests__/useProgramPolicySnapshots.test.tsx frontend/src/hooks/__tests__/useProgramCalendarAnchors.test.tsx frontend/src/hooks/__tests__/useAnnualPlanning.test.tsx frontend/src/app/hub/annual-planning/__tests__/readinessRemediation.test.ts frontend/src/app/hub/annual-planning/__tests__/AnnualPlanningHubClient.test.tsx
• npm run type-check
• npx eslint frontend/src/app/hub/annual-planning/AnnualPlanningHubClient.tsx frontend/src/app/hub/annual-planning/__tests__/AnnualPlanningHubClient.test.tsx frontend/src/app/hub/annual-planning/__tests__/readinessRemediation.test.ts frontend/src/app/hub/annual-planning/readinessRemediation.ts frontend/src/hooks/index.ts frontend/src/hooks/useProgramCalendarAnchors.ts frontend/src/hooks/useProgramPolicySnapshots.ts frontend/src/hooks/__tests__/useProgramCalendarAnchors.test.tsx frontend/src/hooks/__tests__/useProgramPolicySnapshots.test.tsx

Notes

• local Postgres was behind at 20260319_neuro_selective; backed up to backups/manual/20260321_225800_pre_alembic_head_policy_layer.dump and upgraded locally to 20260321_program_policy_snapshots for verification
• one broader pre-existing annual-rotation-service test still fails outside this slice: backend/tests/services/test_annual_rotation_service.py::TestAnnualBlockDraftGeneration::test_generate_repair_block_drafts_targets_only_changed_blocks

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