- Shift architecture from writing-workspace automation to a general AI-hosted local execution model.
- Introduce new LangGraph-based AI runtime with host, local_kb_retrieval, terminal_exec, and docx capabilities.
- Implement structured execution event stream for UI rendering of plans, tasks, and tool steps.
- Remove legacy writing workflow interactions and persistence from active flow.
- Enforce workspace binding for executable runs and introduce sandbox policy for terminal actions.
- Add dual-layer execution UX in chat with inline AI activity feed and dedicated plan UI.
- Define capability registry for dispatching tasks and support placeholder capabilities.
- Update chat UI to require workspace selection and visualize execution progress.
- Remove deprecated writing workflow IPC endpoints and ensure no active paths depend on writing-domain stores.
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