# Phase 4: Policy Module Conversion

**Sprint:** 5
**Duration:** 1 sprint
**Status:** TODO
**Dependencies:** Phase 0 (Foundations)

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## Objectives

1. Create `StellaOps.Policy.Storage.Postgres` project
2. Implement Policy schema in PostgreSQL
3. Handle policy pack versioning correctly
4. Implement risk profiles with version history

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## Deliverables

| Deliverable | Acceptance Criteria |
|-------------|---------------------|
| Policy schema | All tables created with indexes |
| Repository implementations | All 4+ interfaces implemented |
| Version management | Pack versioning working correctly |
| Integration tests | 100% coverage of CRUD operations |

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## Schema Reference

See [SPECIFICATION.md](../SPECIFICATION.md) Section 5.6 for complete Policy schema.

**Tables:**
- `policy.packs`
- `policy.pack_versions`
- `policy.rules`
- `policy.risk_profiles`
- `policy.evaluation_runs`
- `policy.explanations`
- `policy.exceptions`
- `policy.audit`

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## Task Breakdown

### T4.1: Create Policy.Storage.Postgres Project

**Status:** TODO
**Estimate:** 0.5 days

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### T4.2: Implement Schema Migrations

**Status:** TODO
**Estimate:** 1 day

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### T4.3: Implement Pack Repository

**Status:** TODO
**Estimate:** 1 day

**Subtasks:**
- [ ] Implement CRUD for packs
- [ ] Implement version management
- [ ] Handle active version promotion
- [ ] Write integration tests

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### T4.4: Implement Risk Profile Repository

**Status:** TODO
**Estimate:** 1 day

**Subtasks:**
- [ ] Implement CRUD operations
- [ ] Handle version history
- [ ] Implement GetVersionAsync
- [ ] Implement ListVersionsAsync
- [ ] Write integration tests

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### T4.5: Implement Remaining Repositories

**Status:** TODO
**Estimate:** 1.5 days

**Subtasks:**
- [ ] Implement Evaluation Run repository
- [ ] Implement Explanation repository
- [ ] Implement Exception repository
- [ ] Implement Audit repository
- [ ] Write integration tests

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### T4.6: Add Configuration Switch

**Status:** TODO
**Estimate:** 0.5 days

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### T4.7: Run Verification Tests

**Status:** TODO
**Estimate:** 1 day

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### T4.8: Migrate Active Policy Packs

**Status:** TODO
**Estimate:** 0.5 days

**Subtasks:**
- [ ] Export active packs from MongoDB
- [ ] Import to PostgreSQL
- [ ] Verify version numbers
- [ ] Verify active version settings

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### T4.9: Switch to PostgreSQL-Only

**Status:** TODO
**Estimate:** 0.5 days

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## Exit Criteria

- [ ] All repository interfaces implemented
- [ ] Pack versioning working correctly
- [ ] All integration tests pass
- [ ] Policy running on PostgreSQL in production

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*Phase Version: 1.0.0*
*Last Updated: 2025-11-28*