8.5 KiB
Implementation Plan: [FEATURE]
Branch: [###-feature-name]
| Date: [DATE] | Spec: [link]
Input: Feature specification from /specs/[###-feature-name]/spec.md
Execution Flow (/plan command scope)
1. Load feature spec from Input path
→ If not found: ERROR "No feature spec at {path}"
2. Fill Technical Context (scan for NEEDS CLARIFICATION)
→ Detect Project Type from file system structure or context (web=frontend+backend, mobile=app+api)
→ Set Structure Decision based on project type
3. Fill the Constitution Check section based on the content of the constitution document.
4. Evaluate Constitution Check section below
→ If violations exist: Document in Complexity Tracking
→ If no justification possible: ERROR "Simplify approach first"
→ Update Progress Tracking: Initial Constitution Check
5. Execute Phase 0 → research.md
→ If NEEDS CLARIFICATION remain: ERROR "Resolve unknowns"
6. Execute Phase 1 → contracts, data-model.md, quickstart.md, agent-specific template file (e.g., `CLAUDE.md` for Claude Code, `.github/copilot-instructions.md` for GitHub Copilot, `GEMINI.md` for Gemini CLI, `QWEN.md` for Qwen Code or `AGENTS.md` for opencode).
7. Re-evaluate Constitution Check section
→ If new violations: Refactor design, return to Phase 1
→ Update Progress Tracking: Post-Design Constitution Check
8. Plan Phase 2 → Describe task generation approach (DO NOT create tasks.md)
9. STOP - Ready for /tasks command
IMPORTANT: The /plan command STOPS at step 7. Phases 2-4 are executed by other commands:
- Phase 2: /tasks command creates tasks.md
- Phase 3-4: Implementation execution (manual or via tools)
Summary
[Extract from feature spec: primary requirement + technical approach from research]
Technical Context
Language/Version: [e.g., Python 3.11, Swift 5.9, Rust 1.75 or NEEDS CLARIFICATION]
Primary Dependencies: [e.g., FastAPI, UIKit, LLVM or NEEDS CLARIFICATION]
Storage: [if applicable, e.g., PostgreSQL, CoreData, files or N/A]
Testing: [e.g., pytest, XCTest, cargo test or NEEDS CLARIFICATION]
Target Platform: [e.g., Linux server, iOS 15+, WASM or NEEDS CLARIFICATION]
Project Type: [single/web/mobile - determines source structure]
Performance Goals: [domain-specific, e.g., 1000 req/s, 10k lines/sec, 60 fps or NEEDS CLARIFICATION]
Constraints: [domain-specific, e.g., <200ms p95, <100MB memory, offline-capable or NEEDS CLARIFICATION]
Scale/Scope: [domain-specific, e.g., 10k users, 1M LOC, 50 screens or NEEDS CLARIFICATION]
Constitution Check
GATE: Must pass before Phase 0 research. Re-check after Phase 1 design.
- I. Clean Code: Is the proposed code structure and design clean and maintainable?
- II. Functional Style: Does the design favor a functional approach where appropriate?
- III. Descriptive Coding: Is the naming of components and files descriptive and self-documenting?
Project Structure
Documentation (this feature)
specs/[###-feature]/
├── plan.md # This file (/plan command output)
├── research.md # Phase 0 output (/plan command)
├── data-model.md # Phase 1 output (/plan command)
├── quickstart.md # Phase 1 output (/plan command)
├── contracts/ # Phase 1 output (/plan command)
└── tasks.md # Phase 2 output (/tasks command - NOT created by /plan)
Source Code (repository root)
# [REMOVE IF UNUSED] Option 1: Single project (DEFAULT)
src/
├── models/
├── services/
├── cli/
└── lib/
tests/
├── contract/
├── integration/
└── unit/
# [REMOVE IF UNUSED] Option 2: Web application (when "frontend" + "backend" detected)
backend/
├── src/
│ ├── models/
│ ├── services/
│ └── api/
└── tests/
frontend/
├── src/
│ ├── components/
│ ├── pages/
│ └── services/
└── tests/
# [REMOVE IF UNUSED] Option 3: Mobile + API (when "iOS/Android" detected)
api/
└── [same as backend above]
ios/ or android/
└── [platform-specific structure: feature modules, UI flows, platform tests]
Structure Decision: [Document the selected structure and reference the real directories captured above]
Phase 0: Outline & Research
-
Extract unknowns from Technical Context above:
- For each NEEDS CLARIFICATION → research task
- For each dependency → best practices task
- For each integration → patterns task
-
Generate and dispatch research agents:
For each unknown in Technical Context: Task: "Research {unknown} for {feature context}" For each technology choice: Task: "Find best practices for {tech} in {domain}"
-
Consolidate findings in
research.md
using format:- Decision: [what was chosen]
- Rationale: [why chosen]
- Alternatives considered: [what else evaluated]
Output: research.md with all NEEDS CLARIFICATION resolved
Phase 1: Design & Contracts
Prerequisites: research.md complete
-
Extract entities from feature spec →
data-model.md
:- Entity name, fields, relationships
- Validation rules from requirements
- State transitions if applicable
-
Generate API contracts from functional requirements:
- For each user action → endpoint
- Use standard REST/GraphQL patterns
- Output OpenAPI/GraphQL schema to
/contracts/
-
Generate contract tests from contracts:
- One test file per endpoint
- Assert request/response schemas
- Tests must fail (no implementation yet)
-
Extract test scenarios from user stories:
- Each story → integration test scenario
- Quickstart test = story validation steps
-
Update agent file incrementally (O(1) operation):
- Run
.specify/scripts/bash/update-agent-context.sh gemini
IMPORTANT: Execute it exactly as specified above. Do not add or remove any arguments. - If exists: Add only NEW tech from current plan
- Preserve manual additions between markers
- Update recent changes (keep last 3)
- Keep under 150 lines for token efficiency
- Output to repository root
- Run
Output: data-model.md, /contracts/*, failing tests, quickstart.md, agent-specific file
Phase 2: Task Planning Approach
This section describes what the /tasks command will do - DO NOT execute during /plan
Task Generation Strategy:
- Load
.specify/templates/tasks-template.md
as base - Generate tasks from Phase 1 design docs (contracts, data model, quickstart)
- Each contract → contract test task [P]
- Each entity → model creation task [P]
- Each user story → integration test task
- Implementation tasks to make tests pass
Ordering Strategy:
- TDD order: Tests before implementation
- Dependency order: Models before services before UI
- Mark [P] for parallel execution (independent files)
Estimated Output: 25-30 numbered, ordered tasks in tasks.md
IMPORTANT: This phase is executed by the /tasks command, NOT by /plan
Phase 3+: Future Implementation
These phases are beyond the scope of the /plan command
Phase 3: Task execution (/tasks command creates tasks.md)
Phase 4: Implementation (execute tasks.md following constitutional principles)
Phase 5: Validation (run tests, execute quickstart.md, performance validation)
Complexity Tracking
Fill ONLY if Constitution Check has violations that must be justified
Violation | Why Needed | Simpler Alternative Rejected Because |
---|---|---|
[e.g., 4th project] | [current need] | [why 3 projects insufficient] |
[e.g., Repository pattern] | [specific problem] | [why direct DB access insufficient] |
Progress Tracking
This checklist is updated during execution flow
Phase Status:
- Phase 0: Research complete (/plan command)
- Phase 1: Design complete (/plan command)
- Phase 2: Task planning complete (/plan command - describe approach only)
- Phase 3: Tasks generated (/tasks command)
- Phase 4: Implementation complete
- Phase 5: Validation passed
Gate Status:
- Initial Constitution Check: PASS
- Post-Design Constitution Check: PASS
- All NEEDS CLARIFICATION resolved
- Complexity deviations documented
Based on Constitution v1.0.0 - See /memory/constitution.md