feat: improved the Claude Kit as a plugin

skills/session-management/references/indexing.md

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+# Project Indexing
+
+## Generate Index
+
+Scan the project and create `PROJECT_INDEX.md`:
+
+### Excluded Directories
+`node_modules/`, `.git/`, `__pycache__/`, `dist/`, `build/`, `.next/`, `venv/`, `.venv/`, coverage, cache
+
+### File Categories
+- **Entry Points**: Main files, index files, app entry
+- **API/Routes**: Endpoint definitions
+- **Models/Types**: Data structures, schemas
+- **Services**: Business logic
+- **Utilities**: Helper functions
+- **Tests**: Test files
+- **Configuration**: Config files, env templates
+
+### Output Format
+
+```markdown
+# Project Index: [Name]
+
+Generated: [timestamp]
+
+## Quick Navigation
+| Category | Key Files |
+|----------|-----------|
+| Entry Points | [list] |
+| API Routes | [list] |
+
+## Directory Structure
+[tree view]
+
+## Key Files
+### Entry Points
+- `[path]` - [description]
+
+## Dependencies
+### External
+- [package]: [purpose]
+
+## Architecture Notes
+[patterns observed]
+```