- Introduced context_window_tokens in ModelConfig and LLMProviderConfig structs.
- Updated context window estimation logic in ContextCompressor to use context_window_tokens.
- Modified tests to accommodate new context_window_tokens field.
- Refactored memory maintenance logic into a new memory_maintenance.rs file for better organization.
- Ensured backward compatibility by providing default values where necessary.
Co-authored-by: Copilot <copilot@github.com>
