forked from unom/punktfunk
enricobuehlerandClaude Fable 5
c002ca8746
Three drawing-path defects on the pen clients: - The Apple in-range heartbeat was re-armed on every emit (~120 run-loop mutations/s during a stroke) and lived in .default run-loop mode only — a tracking-mode excursion >200 ms with a stationary pen crossed the host's force-release failsafe and dropped the held stroke. Now one long-lived 50 ms timer in .common mode, resending only after ≥50 ms of send silence. - Both clients TRUNCATED an over-8-sample coalesced run instead of splitting it into consecutive batches (the send_pen contract): Apple suffix(8) dropped the oldest samples, the Android JNI clamped count. An over-cap run means the UI thread hitched — exactly when dropping stroke geometry hurts most. Apple splits in emit(); the Android JNI loops send_pen over ≤8-sample chunks (Kotlin's per-emit ceiling is now 64 = a >250 ms stall). - The iOS letterbox mapper did a lock+FFI currentMode() read per coalesced sample on the main thread, contending the ABI lock the batch send takes next — now a 250 ms TTL cache (mid-stream requestMode still tracked). Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>