chore(debug): add flag-gated event tracing to bridge + session panel#84
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chore(debug): add flag-gated event tracing to bridge + session panel#84
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Adds a tiny debug-flag module (web/lib/debug-flag.ts) and dlog tracepoints
inside the SSE→bridge→panel pipeline so the next time the intermittent
non-rendering bug recurs we can capture ground-truth data instead of
guessing.
Enable via:
- URL: http://localhost:3000/?debug=events
- Or: localStorage.setItem('AGENT_FLOW_DEBUG', 'events')
When the flag is off, dlog is a single-branch no-op — no behavioral
change to the bridge or panel.
Tracepoints:
- bridge.onEvent: per-event arrival with type, sessionId, drop-mode,
selected-match
- droppingRef early-return path
- per-session buffer push
- sessionsWithActivity DEDUP vs ADD branches
- flushSessionEvents entry
- dismissed-session re-add path
- rAF eventVersion bump
- SessionCanvasPanel render: logLen / newEvents / consumed
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Summary
Tracing-only change. Adds a flag-gated `dlog` so we can capture exactly which leg of the SSE → bridge → panel pipeline drops events when the intermittent non-rendering bug recurs. Silent by default — no behavioral change unless the flag is enabled.
Enable
Tracepoints
`use-vscode-bridge.ts` (9 dlog calls):
`session-canvas-panel.tsx` (1 dlog call):
Test plan
🤖 Generated with Claude Code