b7db451d9d
- Structured error types with rich context (KBError, NetworkError, etc.) - Configuration management via pydantic-settings from ~/.kb_env - Automatic retry mechanism with tenacity (3 attempts, exponential backoff) - All 100 tests passing - Requirements REL-02, MNT-02, MNT-03 completed Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>