Plan Feature

Create a lightweight implementation plan for medium-scope features.

When to Use

• Medium features (1-5 files)

• Clear requirements, no UX exploration needed

• Standard patterns apply

Artifacts

• implementation_plan.md artifact

• task.md updated via task_boundary

Approach

Phase 1: Discovery & Impact

• Proof of Understanding: Summarize feature in one sentence.

• Holistic Impact Analysis: What else might this affect?

Phase 2: Approach Evaluation

Generate 3-4 strategies.

Evaluate with brief Socratic Debate:

• Proponent: Benefits, consistency with patterns

• Adversary: Complexity, maintenance burden

• Synthesis: Final selection

Phase 3: Design & Execution

File Changes Table

Status File Changes

[NEW] ... ...

[MODIFY] ... ...

Phased Implementation

Break into atomic, testable steps.

Phase 4: Reflexion

Hostile Architect Review: Identify 3 tech debt risks.

Constraints

• No code generation — plan only

• Steps must be atomic and testable

• No one-off patterns