# Implementation Plan: [FEATURE NAME]

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**Related Spec**: `.codexspec/specs/{feature-id}/spec.md`
**Created**: [DATE]
**Status**: Draft

## Context

<!-- Background and current state. Why are we building this feature? -->

## Goals / Non-Goals

**Goals:**
- [What this implementation aims to achieve]
- [Specific outcomes]

**Non-Goals:**
- [What is explicitly out of scope]
- [What will be deferred to future iterations]

## Tech Stack

- **Language**: [e.g., Python 3.11]
- **Framework**: [e.g., FastAPI]
- **Database**: [e.g., PostgreSQL]
- **Frontend**: [e.g., React]
- **Infrastructure**: [e.g., Docker, AWS]

## Architecture Overview

[High-level architecture description]

```
┌─────────────────────────────────────────────────────────┐
│                      Architecture Diagram                │
│                                                          │
│   ┌──────────┐    ┌──────────┐    ┌──────────┐         │
│   │  Client  │───►│   API    │───►│ Database │         │
│   └──────────┘    └──────────┘    └──────────┘         │
│                                                          │
└─────────────────────────────────────────────────────────┘
```

## Component Structure

```
project/
├── src/
│   ├── api/
│   │   ├── __init__.py
│   │   └── routes/
│   ├── models/
│   │   └── __init__.py
│   ├── services/
│   │   └── __init__.py
│   └── utils/
├── tests/
│   ├── unit/
│   └── integration/
├── docs/
└── pyproject.toml
```

## Data Models

### [Model 1]

| Field | Type | Description | Constraints |
|-------|------|-------------|-------------|
| id | UUID | Primary key | Auto-generated |
| created_at | DateTime | Creation timestamp | Non-null |
| ... | ... | ... | ... |

### [Model 2]

| Field | Type | Description | Constraints |
|-------|------|-------------|-------------|
| ... | ... | ... | ... |

## API Contracts

### POST /api/v1/[resource]

**Request:**
```json
{
  "field1": "string",
  "field2": "integer"
}
```

**Response (201):**
```json
{
  "id": "uuid",
  "field1": "string",
  "field2": "integer",
  "created_at": "iso8601"
}
```

**Errors:**
- 400: Invalid request body
- 401: Unauthorized
- 409: Conflict

### GET /api/v1/[resource]/:id

**Response (200):**
```json
{
  "id": "uuid",
  "field1": "string"
}
```

**Errors:**
- 404: Not found

## Decisions

### Decision 1: [Title]

**Context**: [Why this decision was needed]

**Options Considered**:
1. [Option A]
2. [Option B]

**Decision**: [Chosen option]

**Rationale**: [Why this option was chosen]

### Decision 2: [Title]

**Context**: ...

**Decision**: ...

**Rationale**: ...

## Risks / Trade-offs

| Risk | Likelihood | Impact | Mitigation |
|------|------------|--------|------------|
| [Risk 1] | High/Medium/Low | High/Medium/Low | [How to mitigate] |
| [Risk 2] | ... | ... | ... |

## Implementation Phases

### Phase 1: Foundation

- [ ] Setup project structure
- [ ] Configure dependencies
- [ ] Setup database migrations
- [ ] Configure linting and formatting

### Phase 2: Core Implementation

- [ ] Implement data models
- [ ] Implement service layer
- [ ] Implement API endpoints
- [ ] Add input validation

### Phase 3: Testing

- [ ] Write unit tests
- [ ] Write integration tests
- [ ] Setup test fixtures

### Phase 4: Documentation & Polish

- [ ] Update API documentation
- [ ] Add inline code comments
- [ ] Performance optimization
- [ ] Security review

## Security Considerations

- [Security concern 1 and mitigation]
- [Security concern 2 and mitigation]

## Performance Considerations

- [Performance requirement 1]
- [Performance requirement 2]

## Monitoring & Observability

- [Metrics to track]
- [Logs to capture]
- [Alerts to configure]
