Implementation Planning Skill

Overview

Author the ## Decomposition section of the one unified docs/specs/ artifact — granular, parallelizable tasks tracing to the DR-N requirements in the same document's ## Design & Rationale section. There is no second file: traceability resolves within one doc. Ensures complete coverage through explicit, internal traceability. The artifact shape is owned by references/spec-template.md — author against it.

For a complete worked example, see references/worked-example.md.

Triggers

Activate this skill when:

• User runs plan command
• User wants to break a spec into tasks
• A unified docs/specs/ artifact's Design & Rationale section needs decomposition
• User says "plan the implementation" or similar
• Auto-chained from ideate after the Design & Rationale section is written
• Run directly (no prior ideate): at thin/standard depth, author the whole unified spec — light/standard Design & Rationale section plus Decomposition — in one pass
• Auto-chained from plan-review with --revise flag (gaps found)