fix(protocol): revert endpoint back to stop_after_metadata=True

sfm/server.py

@@ -885,13 +885,12 @@ def device_event_blastware_file(
         def _do():
             with _build_client(port, baud, host, tcp_port, timeout=120.0) as client:
                 info = client.connect()
-                # Use full_waveform=True (stop_after_metadata=False) so the device
-                # signals its own end-of-stream rather than us stopping at "Project:".
-                # BW downloads until natural end-of-stream for each event — for this
-                # 5-chunk event that gives the correct body + footer.  For events with
-                # many silence chunks (35+) the file will be larger than BW's, but
-                # correctness takes priority over size matching for now.
-                events = client.get_events(full_waveform=True, stop_after_index=index)
+                # Use full_waveform=False (stop_after_metadata=True) — downloads until
+                # "Project:" is found in the 5A stream, which covers the compliance
+                # metadata section.  For simple Continuous/Single-Shot mode events this
+                # produces the correct body content.  Histogram+Continuous mode requires
+                # different handling (TODO: handle multi-mode events).
+                events = client.get_events(full_waveform=False, stop_after_index=index)
                 matching = [ev for ev in events if ev.index == index]
                 return matching[0] if matching else None, info
         ev, info = _run_with_retry(_do, is_tcp=_is_tcp(host))