debugui-llm-reset

name	debugui-llm-reset
description	Diagnoses embedded debug UI LLM context loss and replies that stop mid-sentence during Connect, board changes, or target retargeting. Use when switching targets starts a new Claude session, a transcript ends with session end, or live tools keep using the previous board.

Debug UI LLM Reset

Diagnose

1. Find the latest matching llm_*.log under the selected app's worklocal.
2. Inspect the final marker:
   • [watchdog: ... turn abandoned] or [watchdog: ... claude exited] means the daemon hard-stopped the turn (process gone, or 600s silence).
   • While the claude subprocess is still running, the UI keeps polling silently with the working indicator — no interim warning. Multi-tool turns can go minutes between stream-json lines while the model processes tool results.
   • [session end] means llm_reset() terminated the process.
   • No marker plus closed output means the Claude process exited independently.
3. Compare the transcript target with the next transcript and the daemon process timeline.
4. Check whether /settarget ran while the answer was active.

Retarget invariant

Changing the board target or device must not restart Claude. /settarget updates backend_status.json; the existing aiemcp process reads that file before each tool call and refreshes its in-process AieGdb configuration.

Preserve all three:

1. The Claude subprocess and conversation.
2. The browser transcript and pending response.
3. The in-process AieGdb object and tile/channel scope.

Refresh the AieGdb target, device, start column, AIE version, _reg_read, and _passthrough. Only explicit New chat or process recovery may advance llm_generation.

Verify

Run:

python3 -m unittest src/tool/debug/test_schedule_debug_server_llm.py
python3 -m unittest src/tool/debug/test_aiemcp_retarget.py
python3 -m py_compile src/tool/debug/schedule_debug_server.py src/tool/debug/schedule_view.py

Confirm both same-target reconnects and real board changes preserve the active conversation, while the next aie_exec call uses the new target and device.