feat: Enhance configuration management and embedding capabilities

- Added JSON-based settings management in Config class for embedding and LLM configurations.
- Introduced methods to save and load settings from a JSON file.
- Updated BaseEmbedder and its subclasses to include max_tokens property for better token management.
- Enhanced chunking strategy to support recursive splitting of large symbols with improved overlap handling.
- Implemented comprehensive tests for recursive splitting and chunking behavior.
- Added CLI tools configuration management for better integration with external tools.
- Introduced a new command for compacting session memory into structured text for recovery.

package.json

@@ -60,6 +60,8 @@
     ".qwen/",
     "codex-lens/src/codexlens/",
     "codex-lens/pyproject.toml",
+    "ccw-litellm/src/ccw_litellm/",
+    "ccw-litellm/pyproject.toml",
     "CLAUDE.md",
     "README.md"
   ],