The live-status batch poller (60s cadence, every streamer in the
watch list) was sending two things on every tick:
- `changes` — the diff vs. the previous tick, used by the renderer
- `snapshot` — the full Map<login, boolean> serialized as a record
Renderer destructures only `changes` (renderer-streamers.ts line 20).
The snapshot field was wire-noise. For a typical 30-50 streamer
watch list, that snapshot is ~1.5KB of JSON every minute, never
read on the other side. Dropped from the broadcast payload.
Initial-state sync still works: the renderer's
initLiveStatusSubscription calls window.api.getLiveStatusSnapshot()
once at boot to pre-fill its map. The broadcast is only for diffs.
Also added a short-circuit on the main side: if changes.length === 0
(every streamer's live status matched the cached value this tick),
don't broadcast at all. The renderer would just iterate an empty
array and trigger a no-op render; saves the wakeup entirely.
Type signature updates ride through preload.ts +
renderer-globals.d.ts so the API contract stays accurate.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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