Alexander Payne 18bc64b36d feat: Self-Coding Foundation (Phase 1) ...

Implements the foundational infrastructure for Timmy's self-modification capability:

## New Services

1. **GitSafety** (src/self_coding/git_safety.py)
   - Atomic git operations with rollback capability
   - Snapshot/restore for safe experimentation
   - Feature branch management (timmy/self-edit/{timestamp})
   - Merge to main only after tests pass

2. **CodebaseIndexer** (src/self_coding/codebase_indexer.py)
   - AST-based parsing of Python source files
   - Extracts classes, functions, imports, docstrings
   - Builds dependency graph for blast radius analysis
   - SQLite storage with hash-based incremental indexing
   - get_summary() for LLM context (<4000 tokens)
   - get_relevant_files() for task-based file discovery

3. **ModificationJournal** (src/self_coding/modification_journal.py)
   - Persistent log of all self-modification attempts
   - Tracks outcomes: success, failure, rollback
   - find_similar() for learning from past attempts
   - Success rate metrics and recent failure tracking
   - Supports vector embeddings (Phase 2)

4. **ReflectionService** (src/self_coding/reflection.py)
   - LLM-powered analysis of modification attempts
   - Generates lessons learned from successes and failures
   - Fallback templates when LLM unavailable
   - Supports context from similar past attempts

## Test Coverage

- 104 new tests across 7 test files
- 95% code coverage on self_coding module
- Green path tests: full workflow integration
- Red path tests: errors, rollbacks, edge cases
- Safety constraint tests: test coverage requirements, protected files

## Usage

    from self_coding import GitSafety, CodebaseIndexer, ModificationJournal

    git = GitSafety(repo_path=/path/to/repo)
    indexer = CodebaseIndexer(repo_path=/path/to/repo)
    journal = ModificationJournal()

Phase 2 will build the Self-Edit MCP Tool that orchestrates these services.

2026-02-26 11:08:05 -05:00

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