Sdc Diagnose

cd "$(git rev-parse --show-toplevel)"
EVENTS='state_change|hook|error|option_prompt|navigate_option|cursor_update|select_option|idle|codex_'
agentdeck diag --tail 100 2>/dev/null | grep -E "$EVENTS" | tail -100 \
  || echo "Bridge not running (or no matching events) — using journal files directly"

ls -t ~/.agentdeck/journal/*.jsonl 2>/dev/null | head -3
ls -t ~/.agentdeck/journal/*.jsonl 2>/dev/null | head -1 | xargs tail -n 400 | grep -E "$EVENTS" | tail -100
grep -E "$EVENTS" /tmp/sdc-debug.log 2>/dev/null | tail -100 || echo "No debug log found"

Pattern: navigate_option cursor=X->Y ... cursor_update cursorIndex=X (reverted)
Root cause: PTY confirmation overwrites optimistic update
Fix: cursor authority system (A3) — optimistic suppresses PTY within 200ms

Pattern: option_prompt (N options) ... idle_detected (< 500ms gap)
Root cause: Small chunk with "❯ No" misclassified as idle prompt
Fix: Semantic idle check (A2) — only "❯" or ">" as sole non-ws content

Pattern: option_prompt indices=[0,1,3] (missing 2)
Root cause: Buffer corruption or partial redraw parsed as complete
Fix: Buffer tail re-parse with debounce

Pattern: select_option ... state AWAITING->PROCESSING->AWAITING (rapid cycle)
Root cause: Enter sent before arrow navigation completes
Fix: Proportional delay (A4) — 50 + |delta| * 20ms

Pattern: (arrow key in terminal) ... no cursor_update for >500ms
Root cause: ink repositions cursor via ANSI sequences without ❯ in chunk
Fix: ANSI reposition detection (A1) — re-parse buffer on small non-❯ chunks

Pattern: Codex session active but lifecycle hooks absent from hook log
Root cause: ~/.codex/config.toml hooks not installed/migrated, or fence corrupted
Fix: re-run `agentdeck codex` (installs/migrates) or inspect installCodexHooksIfNeeded

it('reproduces cursor desync from journal entry', () => {
  const sm = bootToIdle();
  sm.handleParserEvent('option_prompt', {
    options: [/* options from journal */],
    navigable: true,
    cursorIndex: 0,
  });

  sm.updateCursorIndex(/* target */, 'optimistic');
  vi.advanceTimersByTime(/* gap from journal */);
  sm.updateCursorIndex(/* stale PTY value */, 'pty');

  expect(sm.getCursorIndex()).toBe(/* expected */);
});

cd "$(git rev-parse --show-toplevel)"
pnpm test
pnpm -r exec tsc --noEmit

## Diagnostic Report

### Issues Found
1. [PATTERN]: Description
   - Journal entries: [timestamps]
   - Expected: X
   - Actual: Y
   - Fix: [A1/A2/A3/A4/A5/codex] — description

### Tests Generated
- <file>: N new tests
- Regression coverage: [patterns covered]

### Verification
- pnpm test: PASS/FAIL
- TypeScript: PASS/FAIL

### Recommendations
- [Any additional fixes or monitoring suggestions]