Implement native reply streaming for the WeCom (企业微信) adapter over the
long-connection "msgtype: stream" transport, so a reply renders as a single
live-updating typing bubble instead of one final block. Aligns with the
official wecom-openclaw-plugin streaming behavior.
Includes the machinery intrinsic to native streaming on WeCom:
- Transport: seed frame (<think></think>) opens the typing bubble, intermediate
frames update it, a finalize frame closes it; native-streaming adapters are
let past the edit-only gate. Fire-and-forget intermediate frames (WeCom
long-connection mode has no documented edit-rate limit); an adapter-level
frame cap is retained. (Early builds gated frames behind a char throttle;
removed in favor of fire-and-forget + identity dedup.)
- Per-turn isolation: each turn owns a unique turn_id; concurrent messages are
isolated via (chat_id, turn_id)-keyed state. Dual-lane priority queue
(control vs normal) plus a per-chat token bucket to stay under WeCom's rate
limit (errcode 846607).
- Dedup-safe delivery + ack-race handling: deliver-once contract (a frame is
delivered the moment it is emitted; failures logged, not re-sent; delivery
marked once per turn), per-req_id reply queue with ack tracking, and the
timeout-inversion / orphan-queue race fixes. Robust fallback on 846608 /
846609 / errcode 6000 / passive-reply timeout via proactive send.
- Interaction boundaries: finalize + reset before approval/clarify prompts so
the prompt is the last thing on screen and never traps a lingering bubble;
eager re-seed after a clarify answer so the typing bubble reappears instantly.
- Stream-level keepalive: optional periodic finish=false frame + finalize-time
stream-age guard to refresh WeCom's ~6-minute reply-stream window on long
turns (mitigates 846604 / 846608). Off by default; tunable via config.yaml.
- Tool-progress folded into the same native-stream bubble instead of separate
messages; image+text double-callback merged into one turn.
Tests cover the streaming lifecycle, per-turn isolation, duplicate-send / ack
timing, approval + clarify boundaries, eager re-seed, and tool-progress.
2ecb544551