## Summary
Show the transport badge ("T") in the live packet feed, matching the
packets table (#337).
## Changes
- Add `transportBadge(pkt.route_type)` to all 4 feed rendering paths in
`live.js`:
- Grouped feed items (initial history load)
- `addFeedItemDOM()` (VCR replay)
- Dedup new feed items (live WebSocket updates)
- Node detail panel recent packets list
- Uses existing `transportBadge()` from `app.js` and `.badge-transport`
CSS from `style.css`
## Testing
- 2 new source-level assertions in `test-live.js` verifying
`transportBadge()` calls exist
- All existing tests pass (67 passed in test-live.js, no new failures)
Fixes#338
Co-authored-by: you <you@example.com>
## Summary
VCR replay functions (`vcrReplayFromTs`, `vcrRewind`,
`fetchNextReplayPage`) fetch up to 10K packets and process them all
synchronously on the main thread via `expandToBufferEntries`, causing
multi-second UI freezes — especially on mobile.
## Fix
- Added `expandToBufferEntriesAsync()` — processes packets in chunks of
200, yielding to the event loop via `setTimeout(0)` between chunks
- Updated all three VCR replay callers to use the async variant
- Kept the synchronous `expandToBufferEntries()` for backward
compatibility (tests, small datasets)
- Exposed `_liveExpandToBufferEntriesAsync` on window for test access
## Perf justification
- **Before:** 10K packets × ~2 observations = 20K+ objects created
synchronously, blocking the main thread for 1-3 seconds on mobile
- **After:** Same work split into chunks of 200 packets (~400 entries)
with event loop yields between chunks. Each chunk takes <5ms, keeping
the UI responsive (well under the 16ms frame budget)
- Chunk size of 200 is tunable via `VCR_CHUNK_SIZE`
## Tests
- Added regression test: sync expand correctness at scale (500 packets →
1000 entries)
- Added structural test: verifies `VCR_CHUNK_SIZE` exists and async
function yields via `setTimeout`
- All existing tests pass (`npm test`)
Fixes#395
---------
Co-authored-by: you <you@example.com>
Kpa-clawbot