.get("key", {}) only applies the default when the key is ABSENT.
When the key exists with value None (null in JSON), .get() returns
None and the subsequent .get() raises AttributeError.
Fix: replace .get("key", {}).get(...) with (.get("key") or {}).get(...)
which handles both missing keys AND None values.
8 instances across 6 files:
- gateway/run.py: tool_call function name check
- acp_adapter/server.py: tool name/description extraction
- gateway/platforms/qqbot/onboard.py: API response task_id
- gateway/platforms/yuanbao.py: message content parsing (x2)
- gateway/platforms/slack.py: block text extraction (x2)
- tui_gateway/server.py: error message extraction
- Replace async create_bind_task/poll_bind_result with synchronous
httpx.Client equivalents, eliminating manual event loop management
- Move _render_qr and full qr_register() entry-point into onboard.py,
mirroring the Feishu onboarding pattern
- Remove _qqbot_render_qr and _qqbot_qr_flow from gateway.py (~90 lines);
call site becomes a single qr_register() import
- Fix potential segfault: previous code called loop.close() in the EXPIRED
branch and again in the finally block (double-close crashed under uvloop)