The plain reply() uses cmd="reply" which does not support "text" msgtype
and causes WeCom API to return errcode=40008 (invalid message type).
Unify both progress and final text messages to use reply_stream()
(cmd="aibot_respond_msg"), differentiating via finish flag.
Fixes#2999
- Use asyncio.to_thread for file I/O to avoid blocking event loop
- Add 200MB upload size limit with early rejection
- Fix file handle leak by using context manager
- Use memoryview for upload chunking to reduce peak memory
- Add inbound download size check to prevent OOM
- Use asyncio.to_thread for write_bytes in download path
- Extract inline media_type detection to _guess_wecom_media_type()
- Use asyncio.to_thread for file I/O to avoid blocking event loop
- Add 200MB upload size limit with early rejection
- Fix file handle leak by using context manager
- Free raw bytes early after chunking to reduce memory pressure
- Add file attachments to media_paths (was text-only, inconsistent with image)
- Use robust _sanitize_filename() instead of os.path.basename() for path safety
- Remove re-raise in send() for consistency with QQ channel
- Fix truncated media_id logging for short IDs
QQ channel improvements (on top of nightly):
- Add top-level try/except in _on_message and send() for resilience
- Use defensive getattr() for attachment attributes (botpy version compat)
- Skip file_name for image uploads to avoid QQ rendering as file attachment
- Extract only file_info from upload response to avoid extra fields
- Handle protocol-relative URLs (//...) in attachment downloads
WeCom channel improvements:
- Add _upload_media_ws() for WebSocket 3-step media upload protocol
- Send media files (image/video/voice/file) via WeCom rich media API
- Support progress messages (plain reply) vs final response (streaming)
- Support proactive send when no frame available (cron push)
- Pass media_paths to message bus for downstream processing
Make channel delivery failures raise consistently so retry policy lives in ChannelManager rather than being split across individual channels. Tighten Telegram stream finalization, clarify sendMaxRetries semantics, and align the docs with the behavior the system actually guarantees.