feature-dev

# Feature Development ## Core Principles - Understand existing patterns before coding. - Ask clarifying questions for underspecified behavior. - Present architecture trade-offs before implementation. - Do not implement until the user approves direction. ## Phase 1: Discovery 1. Clarify feature goal, constraints, and success criteria. 2. Summarize understanding and confirm with the user. ## Phase 2: Codebase Exploration 1. Explore relevant code paths comprehensively. 2. Identify similar features, extension points, and conventions. 3. Build a focused list of key files and read them deeply. 4. Summarize findings. ## Phase 3: Clarifying Questions 1. Identify ambiguity in scope, edge cases, error handling, and compatibility. 2. Ask clear grouped questions. 3. Wait for user answers before design. ## Phase 4: Architecture Design 1. Propose multiple approaches (minimal change, cleaner architecture, pragmatic balance). 2. Compare trade-offs. 3. Recommend one approach with reasoning. 4. Ask the user to choose. ## Phase 5: Implementation 1. Start only after explicit user approval. 2. Implement with project conventions and chosen architecture. 3. Keep a running task checklist and update progress. ## Phase 6: Quality Review 1. Review for correctness, simplicity, and convention alignment. 2. Surface high-severity issues first. 3. Ask whether to fix now or defer. 4. Apply chosen fixes. ## Phase 7: Summary 1. Summarize what was built. 2. List key decisions and changed files. 3. Provide clear next steps.