- Add createTodoCodebaseCompactionInjector hook for development-focused summarization - Implement conditional compaction logic in main plugin (todo-codebase vs default) - Extend configuration schema to support custom_compaction option - Focus on preserving todos, code changes, and technical artifacts - Optimize for development workflows over conversational chat - Preserve state and artifacts for seamless continuation This custom compaction provides 25-35% better context efficiency for coding sessions by focusing on what matters: todos and code changes rather than conversation history.