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# Implementation Plan: [FEATURE] **Branch**: `[###-feature-name]` | **Date**: [DATE] | **Spec**: [link] **Input**: Feature specification from `/specs/[###-feature-name]/spec.md` **Note**: This template is filled in by the `/speckit.plan` command. See `.specify/templates/commands/plan.md` for the execution workflow. ## Summary [Extract from feature spec: primary requirement + technical approach from research] ## Technical Context <!-- ACTION REQUIRED: Replace the content in this section with the technical details for the project. The structure here is presented in advisory capacity to guide the iteration process. --> **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.* This feature MUST comply with all principles defined in `.specify/memory/constitution.md`: ### Code Quality Standards (Principle I) - [ ] TypeScript strict mode enabled - [ ] No unjustified `any` types - [ ] Biome configured for linting and formatting - [ ] Lint and format rules followed and run after each task - [ ] Maximum function complexity ≤ 10 - [ ] All error conditions explicitly handled ### Testing Standards (Principle II) - NON-NEGOTIABLE - [ ] Test-Driven Development plan documented - NO CODE WITHOUT TESTS FIRST - [ ] Red-Green-Refactor cycle strictly enforced for ALL development - [ ] Unit test coverage plan: target ≥80% - [ ] Integration tests identified for all external interactions - [ ] Contract tests defined for all public interfaces - [ ] CI/CD test automation configured ### User Experience Consistency (Principle III) - [ ] Response time targets defined (≤200ms sync, ≤2s complex) - [ ] Loading states specified for operations >200ms - [ ] Error messages are user-friendly and consistent - [ ] Accessibility requirements specified (WCAG 2.1 AA) - [ ] Progressive enhancement strategy defined ### Documentation-First Development (Principle IV) - [ ] Context7 MCP usage planned for all external dependencies - [ ] Architecture decisions documented in ADR format - [ ] API documentation approach defined (OpenAPI/Swagger) - [ ] User documentation scope identified - [ ] Complex logic documentation requirements noted - [ ] All diagrams specified in Mermaid syntax ### Dependency Hygiene (Principle V) - [ ] All dependencies use latest stable versions - [ ] Security audit process defined - [ ] New dependencies justified - [ ] License compatibility verified - [ ] Update schedule established ### Prefer Existing Solutions (Principle VI) - [ ] Existing packages/libraries evaluated before custom code - [ ] Context7 MCP used to find official examples and patterns - [ ] Custom implementations justified in writing - [ ] Code reuse opportunities identified - [ ] Attribution documented for reused code ### Diagram Standards (Principle VII) - [ ] All diagrams use Mermaid syntax (no ASCII art) - [ ] Diagram accessibility requirements met - [ ] Consistent diagram styling defined - [ ] Diagrams stored as text in Markdown files **Violations requiring justification:** [List any principles that cannot be followed with detailed rationale] ## Project Structure ### Documentation (this feature) ``` specs/[###-feature]/ ├── plan.md # This file (/speckit.plan command output) ├── research.md # Phase 0 output (/speckit.plan command) ├── data-model.md # Phase 1 output (/speckit.plan command) ├── quickstart.md # Phase 1 output (/speckit.plan command) ├── contracts/ # Phase 1 output (/speckit.plan command) └── tasks.md # Phase 2 output (/speckit.tasks command - NOT created by /speckit.plan) ``` ### Source Code (repository root) <!-- ACTION REQUIRED: Replace the placeholder tree below with the concrete layout for this feature. Delete unused options and expand the chosen structure with real paths (e.g., apps/admin, packages/something). The delivered plan must not include Option labels. --> ``` # [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] ## 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] |