# Phase 4: Documentation Updates

## Objective
Update all user-facing documentation to use `mutation_response`.

## Duration
2 hours

## Files to Modify
- `docs/mutations/status-strings.md`
- `docs/features/sql-function-return-format.md`
- `docs/features/mutation-result-reference.md`
- `docs/features/graphql-cascade.md`
- `CHANGELOG.md`

---

## Task 4.1-4.4: Update Documentation Files

For EACH file:

1. Global find/replace: `mutation_result_v2` → `mutation_response`
2. Review examples for clarity
3. Update any diagrams/tables

### Verification (per file):
```bash
! grep -i "mutation_result_v2" docs/mutations/status-strings.md
! grep -i "mutation_result_v2" docs/features/sql-function-return-format.md
! grep -i "mutation_result_v2" docs/features/mutation-result-reference.md
! grep -i "mutation_result_v2" docs/features/graphql-cascade.md
```

---

## Task 4.5: Update CHANGELOG

**File**: `CHANGELOG.md`

### Add entry at top:
```markdown
## [Unreleased]

### Changed
- **BREAKING (Pre-release only)**: Renamed `mutation_result_v2` to `mutation_response`
  - PostgreSQL composite type renamed
  - All helper functions updated
  - Migration file: `005_add_mutation_result_v2.sql` → `005_add_mutation_response.sql`
  - **Impact**: None (no external users)
  - **Migration**: Update PostgreSQL functions to return `mutation_response`
```

---

## Acceptance Criteria
- [ ] All doc files updated
- [ ] No `mutation_result_v2` in docs/
- [ ] CHANGELOG entry added
- [ ] Examples are correct

## Git Commit
```bash
git add docs/ CHANGELOG.md
git commit -m "docs: update mutation_response references

- Update all documentation files
- Add CHANGELOG entry for rename"
```

## Next: Phase 5 - Tests

---

**Phase Status**: ✅ Completed
**Version**: v1.8.0
**Breaking**: No (documentation only)
