The callDebugBuffer.length=0 in showCallScreen() ran AFTER the
connect command returned, wiping all connect: events (path_negotiated,
race_start, race_done, candidate_diags). Only media: events survived
because they arrived after the clear.
Removed all automatic buffer clearing. The reverse().find() already
handles stale data by picking the most recent event. The manual
"Clear log" button (line 624) is the only way to clear now.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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