Add repomap tool for AI-friendly code structure maps (#22)

Implement tree-sitter based repomap tool inspired by Aider's repomap.py.
Generates token-optimized code structure maps for AI-assisted development.

Implementation:
- Single-file repomap.py (~330 lines)
- Tree-sitter parsing for Python, TypeScript, JavaScript, Go, Shell
- Parallel processing for performance
- Respects .gitignore patterns
- CLI with --verbose, --max-file-size, --no-parallel options
- Comprehensive documentation with CI/CD examples

CLAUDE.md Configuration:
- Mandate LOADING .repomap.txt at session start (not generating)
- .repomap.txt tracked in git for project context
- Define proactive usage scenarios (planning, reviews, refactoring)
- Specify regeneration triggers (file/class changes, before PRs)
- Integrate .repomap.txt into commit workflow
- Version bumped to 2.2.0

Files:
- repomap.py - Main implementation
- requirements.txt - Dependencies (tree-sitter + language grammars)
- docs/patterns/repomap.md - Pattern documentation
- .repomap.txt - Generated repository map (tracked in git)
- .gitignore - Added repomap patterns
- CLAUDE.md - Updated with repomap workflow

Terminology:
- Replaced all "codemap" references with "repomap" throughout codebase

Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: jeremyeder

.gitignore

@@ -75,3 +75,16 @@ yarn-error.log*
 *.bak
 *.backup
 COLORING-BOOK-SCRIPT.md
+
+# Repomap
+# Tree-sitter compiled grammars
+build/
+*.so
+*.dylib
+*.dll
+
+# Repomap cache files (future use)
+.repomap-cache/
+
+# Note: .repomap.txt is tracked in git as part of development workflow
+prompts/

.repomap.txt

@@ -0,0 +1,26 @@
+repomap.py
+  class CodeSymbol
+  class FileInfo
+  class RepomapGenerator
+    def __init__()
+    def _load_gitignore()
+    def _should_ignore()
+    def _is_binary()
+    def _get_file_extension()
+    def _discover_files()
+    def _parse_file()
+    def _format_output()
+    def generate()
+    def main()
+scripts/
+  record-demo.sh
+  setup.sh
+  validate-mermaid.sh
+    def validate_markdown_file()
+scripts/autonomous-review/
+  review-reference.sh
+scripts/validation/
+  autonomous-fix-loop-template.sh
+scripts/validation/tests/
+  run-all.sh
+  test-autonomous-fix-loop.sh

CLAUDE.md

@@ -1,7 +1,7 @@
 # Ambient Code Reference Repository - Agent Configuration
 
-**Version**: 2.1.0
-**Last Updated**: 2026-01-04
+**Version**: 2.2.0
+**Last Updated**: 2026-01-15
 **Purpose**: Documentation-only reference for AI-assisted development patterns
 
 ---
@@ -99,6 +99,79 @@ echo $VIRTUAL_ENV  # Should show project path
 uv pip install -r requirements-dev.txt
 ```
 
+### Repomap - Context Window Optimization
+
+**MANDATORY: Load repomap at session start and use proactively throughout development.**
+
+#### Session Start Protocol
+
+**ALWAYS load .repomap.txt as the first action** when starting any development session:
+
+```bash
+# At session start - load existing repomap
+cat .repomap.txt
+```
+
+**Purpose**: Provides token-optimized codebase context for AI-assisted development, reducing context window usage while maintaining code understanding.
+
+**Note**: The .repomap.txt file is tracked in git and should already exist. Only regenerate it when structural changes occur.
+
+#### Proactive Usage Throughout Development
+
+**Use repomap context in these scenarios**:
+
+1. **Planning implementations** - Review repomap before designing features
+2. **Understanding dependencies** - Check which files/classes exist before creating new ones
+3. **Code reviews** - Reference structure when reviewing changes
+4. **Refactoring** - Understand impact scope across codebase
+5. **Documentation** - Ensure docs reflect actual code structure
+
+#### When to Regenerate
+
+**Regenerate repomap when**:
+
+- Files are added or removed
+- Classes or functions are added/removed
+- Major refactoring is completed
+- Before creating PRs (ensure map is current)
+
+```bash
+# Regenerate after changes
+python repomap.py . > .repomap.txt
+git add .repomap.txt  # Include in commits
+```
+
+#### Integration with Development Workflow
+
+**Include repomap in commit tracking**:
+
+```bash
+# Pre-commit: Update repomap
+python repomap.py . > .repomap.txt
+git add .repomap.txt
+
+# Commit message references structure changes
+git commit -m "Add UserService class
+
+Updated repomap to reflect new service layer structure"
+```
+
+**Use in AI prompts**:
+
+- Reference specific files/classes from repomap by name
+- Ask questions about structure (e.g., "Where should I add authentication logic?")
+- Validate assumptions (e.g., "Does a Config class already exist?")
+
+#### Repomap Best Practices
+
+- ✅ Load at session start (always)
+- ✅ Regenerate after structural changes
+- ✅ Reference in planning and design discussions
+- ✅ Include in commit workflow
+- ✅ Use to avoid duplicate implementations
+- ❌ Don't rely on stale repomaps
+- ❌ Don't skip regeneration before PRs
+
 ### Code Quality Tools
 
 For linting documentation code examples:
@@ -338,6 +411,9 @@ cd reference
 # Install doc tooling
 uv pip install -r requirements-dev.txt
 
+# Load repomap (session start)
+cat .repomap.txt
+
 # Lint documentation
 markdownlint docs/**/*.md --fix
 
@@ -351,18 +427,24 @@ markdownlint docs/**/*.md --fix
 # 1. Create feature branch
 git checkout -b docs/topic-name
 
-# 2. Edit documentation
+# 2. Review repomap
+cat .repomap.txt
+
+# 3. Edit documentation
 # ... make changes ...
 
-# 3. Validate
+# 4. Validate
 markdownlint docs/**/*.md --fix
 ./scripts/validate-mermaid.sh
 
-# 4. Commit
-git add docs/
+# 5. Regenerate repomap if structure changed
+python repomap.py . > .repomap.txt
+
+# 6. Commit
+git add docs/ .repomap.txt
 git commit -m "Add documentation for X"
 
-# 5. Push and create PR
+# 7. Push and create PR
 git push -u origin docs/topic-name
 gh pr create --title "docs: Add X" --body "Documentation for X pattern"
 ```

README.md

@@ -6,6 +6,7 @@ AI-assisted development patterns. Each pattern is standalone - adopt what you ne
 
 | Problem | Pattern |
 |---------|---------|
+| AI context windows fill up fast | [Repomap](docs/patterns/repomap.md) |
 | AI gives inconsistent answers | [Codebase Agent](docs/patterns/codebase-agent.md) |
 | AI misses obvious bugs | [Self-Review Reflection](docs/patterns/self-review-reflection.md) |
 | PRs take forever to create | [Issue-to-PR Automation](docs/patterns/issue-to-pr.md) |