Feishu CardKit and DingTalk AI Card updates run inside the serialized adapter message path. A hung platform update can prevent the later message_complete event from being handled, leaving mobile IM users stuck on a partial streaming card.
This bounds platform card API calls and gives Feishu a final patch fallback when CardKit finalization fails, so a bad intermediate frame cannot permanently block the chat turn.
Constraint: Feishu and DingTalk card APIs are external network calls without reliable SDK-level deadline guarantees
Rejected: Disable streaming cards entirely | loses the live IM experience for normal fast responses
Confidence: high
Scope-risk: narrow
Directive: Keep IM card platform calls bounded because adapter server messages are serialized per chat
Tested: bun test adapters/feishu/__tests__/streaming-card.test.ts
Tested: bun test adapters/dingtalk/__tests__/ai-card.test.ts
Tested: bun run check:adapters
Tested: bunx tsc -p adapters/tsconfig.json --noEmit
Not-tested: Full bun run verify was interrupted during the coverage lane after dependency setup
WeChat and DingTalk were using different pairing, attachment, and response
state paths, which made the new IM channels behave differently from Feishu
and Telegram. Align the shared pairing model, wire inbound media into the
existing attachment bridge, and map platform response capabilities to their
real APIs: WeChat block streaming plus typing, DingTalk AI Card streaming.
Constraint: WeChat iLink exposes typing and block streaming, but no editable message/card streaming API
Constraint: DingTalk streaming depends on the AI Card create/deliver/stream/finalize lifecycle
Rejected: Fake DingTalk typing with standalone markdown | it would add chat noise instead of platform state
Rejected: Auto-pair WeChat after QR login | it bypasses the shared IM pairing model
Confidence: high
Scope-risk: moderate
Directive: Keep WeChat streaming as block-send unless iLink adds editable messages; keep DingTalk streaming on AI Card APIs
Tested: bun run check:adapters; bun run check:server; cd desktop && bun run test src/stores/adapterStore.test.ts; cd desktop && bun run build; bunx tsc -p adapters/tsconfig.json --noEmit; git diff --check
Not-tested: Live WeChat and DingTalk platform smoke with real production credentials
