Live sniff/sim stream trace frames from a background thread. bpython replaces sys.stdout with a capture object whose write() does a greenlet switch back to the main thread — which raises off-thread; the text buffers but only repaints on the next keypress, so streamed frames 'pile up until you touch a key'. New trace/output.py emit() buffers via the repl's on_write and fires bpython's threadsafe repaint trigger; a plain write everywhere else, with a safe fallback on any internals mismatch.
Route TraceFormatter.print(), SimSession's sim-ended status, and SniffSession's state message through emit(). Flip the trace-line newline convention from leading to trailing so each emitted line self-terminates (format_sniff_line + test updated to match).
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
SniffSession/SimSession.start_15693 gain on_frame(frame) and quiet kwargs (defaults preserve today's print behavior). Each frame is a plain dict {protocol, direction, timestamp, duration, data, data_hex, decoded[, crc_fail]} with no ANSI. SimSession now accumulates frames (entries property + clear(), mirroring SniffSession) and auto-streams when trace or on_frame is set; printing is gated on trace and not quiet. TraceFormatter.decode() exposes the annotation without color; format()/print() untouched.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
