- Add multi-turn conversation memory (sliding window of last 5 turns / 10 messages) for Terminal Copilot.
- Introduce <notes> XML tag in Copilot response schema for tracking internal agent reasoning, tool usage, and key facts across turns.
- Instruct Copilot via System Prompt about the 5-turn pruning window and mandate summarizing critical facts in <notes>.
- Extend Command Center frontend (types.ts, useAISession.ts, AIPanel.tsx) with expandable "🧠 Internal Agent Notes / Memory" accordion and browser console response debug logging.
- Ensure 100% transparent serialization across local CLI execution, remote gRPC streams, and Web UI.
- Update documentation and bump version to v6.2.0.