fix: remove hardcoded fi==9 skip in _decode_a5_waveform

Frame index 9 was assumed to be the device terminator based on the
9-frame original blast capture. For streams with >9 frames (current
device produces 35), fi==9 is live waveform data — the skip was
dropping ~133 sample-sets per event.

Terminator detection is handled upstream via page_key==0x0000 in
read_bulk_waveform_stream, so no index-based skip is needed here.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

minimateplus/client.py

@@ -930,10 +930,9 @@ def _decode_a5_waveform(
         elif fi == 7:
             continue
 
-        # A5[9] is the device terminator frame (page_key=0x0000), also no data.
-        elif fi == 9:
-            continue
-
+        # Terminator frames have page_key=0x0000 and are excluded upstream
+        # (read_bulk_waveform_stream returns early on page_key==0).
+        # No hardcoded frame-index skip here — all non-metadata frames are data.
         else:
             # Strip the 8-byte per-frame header (ctr + 6 zero bytes)
             if len(w) < 8: