**Palace Code self-healing check complete — everything passed.**

Here's what was tested:

**Layout:** Page renders correctly with "Palace Code" title, split-panel layout (thread list left, detail right), time window selector (1h/6h/12h/1d/3d/7d), and new chat button (+).

**APIs — all returning 200:**
- `/code/api/threads` — 22 threads found
- `/code/api/session-tails` — session log entries (SESSION START, USER, TEXT, TOOL CALL, etc.)
- `/code/api/linear-issues` — 75+ issues
- `/code/api/attach-thread`, `update-thread`, `delete-thread` — all functional

**Features confirmed working:**
- Time window filtering (1h → 0 threads, 1d → 22 threads)
- Thread grouping (replied, processing, queued, skipped, done)
- Session log parsing with `.log` and `.jsonl` fallback
- Swipe-to-delete/archive with undo timer
- Status badge with dropdown
- New chat draft panel
- Speech recognition integration
- Auto-selection of first thread on load

No bugs found, no fixes applied.