code-deduplication

# Code Deduplication Skill **Purpose:** Prevent semantic duplication and code bloat. Maintain a capability index so Claude always knows what exists before writing something new. --- ## Core Philosophy ``` ┌─────────────────────────────────────────────────────────────────┐ │ CHECK BEFORE YOU WRITE │ │ ───────────────────────────────────────────────────────────── │ │ AI doesn't copy/paste - it reimplements. │ │ The problem isn't duplicate code, it's duplicate PURPOSE. │ │ │ │ Before writing ANY new function: │ │ 1. Check CODE_INDEX.md for existing capabilities │ │ 2. Search codebase for similar functionality │ │ 3. Extend existing code if possible │ │ 4. Only create new if nothing suitable exists │ ├─────────────────────────────────────────────────────────────────┤ │ AFTER WRITING: Update the index immediately. │ │ PERIODICALLY: Run /audit-duplicates to catch overlap. │ └─────────────────────────────────────────────────────────────────┘ ``` --- ## Code Index Structure Maintain `CODE_INDEX.md` in project root, organized by **capability** not file location: ```markdown # Code Index *Last updated: [timestamp]* *Run `/update-code-index` to regenerate* ## Quick Reference | Category | Count | Location...