User confirms implementation is done
    ↓
Read original Intent file
    ↓
Scan implemented code for:
    - Public interfaces
    - Data structures
    - Key naming conventions
    - Architecture patterns
    ↓
Compare with Intent
    ↓
Identify gaps/differences
    ↓
Present changes for approval
    ↓
Update Intent with confirmed details
    ↓
Mark synced sections with timestamp

Code Analysis:
├── Public APIs
│   ├── Endpoints (REST/GraphQL/RPC)
│   ├── Function signatures
│   └── Event definitions
├── Data Models
│   ├── Database schemas
│   ├── Type definitions
│   └── Config structures
├── Architecture
│   ├── Module structure
│   ├── Dependency graph
│   └── Layer boundaries
└── Conventions
    ├── Naming patterns
    ├── Error formats
    └── Logging standards

"The following details were finalized during implementation.
Should I sync them back to Intent?"

Interfaces:
- [x] POST /api/users - Create user (new)
- [x] UserSchema: added 'createdAt' field (changed)

Data Structures:
- [x] Config now uses YAML instead of JSON (changed)

Naming:
- [x] Service class renamed to UserService (changed)

## Finalized Implementation Details

> Synced on: YYYY-MM-DD
> From: [commit hash or version]

### API Interfaces

| Endpoint | Method | Request | Response |
|----------|--------|---------|----------|
| /api/users | POST | `{name, email}` | `{id, name, email, createdAt}` |
| /api/users/:id | GET | - | `{id, name, email, createdAt}` |

### Data Structures

\`\`\`typescript
interface User {
  id: string;
  name: string;
  email: string;
  createdAt: Date;
}
\`\`\`

### Module Structure

\`\`\`
src/
├── api/
│   └── users.ts       # User endpoints
├── services/
│   └── UserService.ts # Business logic
├── models/
│   └── User.ts        # Data model
└── config/
    └── config.yaml    # Configuration
\`\`\`

### Key Decisions Confirmed

| Decision | Final Choice | Rationale |
|----------|--------------|-----------|
| Config format | YAML | Better readability for nested config |
| ID generation | UUID v4 | Standard, no coordination needed |

## API Design

> [!SYNCED] Last synced: 2024-01-15 from commit abc123

### Endpoints
...

/intent-interview     # Create Intent (initial)
    ↓
/intent-review        # Approve Intent
    ↓
/intent-plan          # Generate execution plan
    ↓
[Execute: TDD cycles]
    ↓
/intent-sync          # Write back confirmed details (THIS SKILL)
    ↓
/intent-check         # Verify consistency

User: Implementation is done, tests pass. Please sync back to Intent.