feat(adapter-lark): add Lark (Feishu) adapter

[mazhe-nerd]

Summary

Adds @chat-adapter/lark, a new Chat SDK adapter for Lark / Feishu, built on @larksuiteoapi/node-sdk's LarkChannel.

Capabilities

Inbound (WebSocket long-connection):

• Receives messages (23 Lark message types normalized by the SDK), reactions, and card button clicks
• Routes to onNewMention / onDirectMessage / onSubscribedMessage / onReaction / onAction
• Mention detection uses the SDK's structured mentionedBot field (works even when Lark strips @bot from the text)

Outbound:

• postMessage — markdown → Lark post with code-fence-aware chunking and auto-retry
• stream — native cardkit typewriter (progressive rendering, not PATCH polling)
• editMessage / deleteMessage — via the SDK's channel.editMessage / channel.recallMessage (handles post-vs-text format matching)
• addReaction / removeReaction — with chat-SDK emoji name ↔ Lark emoji_type mapping
• Long messages auto-split while preserving markdown code blocks

History / lookup:

• fetchMessages — paged listing, direction-aware (ByCreateTimeDesc / Asc)
• fetchMessage, fetchThread, fetchChannelInfo
• listThreads — derived client-side by grouping messages by root_id
• Handles bot-authored history entries consistently (resolves app_id → open_id)

DM:

• openDM returns a placeholder thread ID; routing to ou_* recipients handled transparently by the SDK's channel.send
• isDM uses a p2p-chat cache populated from inbound events

Onboarding:

• registerLarkApp re-exported from the SDK — scan a QR with the Lark mobile app to create the app and get credentials back

Docs:

• Entry at /adapters/lark, Lark SVG logo, README auto-rendered as the detail page

Thread ID format: lark:{chatId}:{rootId}, where rootId is root_id ?? message_id.

Test plan

• Unit: 82 tests across thread-id, emoji, and LarkAdapter — pnpm --filter @chat-adapter/lark test
• Typecheck / build: pnpm --filter @chat-adapter/lark typecheck / build — clean
• Manual: exercised end-to-end against a real Lark app via 6 runnable scenarios under smokes/:
  • smoke:echo — mention / DM / subscribed-thread routing
  • smoke:stream — cardkit typewriter reply
  • smoke:edit — post → edit → delete
  • smoke:reactions — add/remove reactions + inbound reaction events
  • smoke:long — multi-chunk markdown with code blocks
  • smoke:history — fetchMessages / listThreads / fetchMessage

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Review the following changes in direct dependencies. Learn more about Socket for GitHub.

Diff	Package	Supply Chain Security	Vulnerability	Quality	Maintenance	License
	npm/​@​streamdown/​cjk@​1.0.2 ⏵ 1.0.3				-5
	npm/​@​streamdown/​code@​1.0.3 ⏵ 1.1.1	+1		+1	-4
	npm/​discord.js@​14.25.1 ⏵ 14.26.3	+1
	npm/​@​types/​pg@​8.18.0 ⏵ 8.20.0	+1		+1
	npm/​@​ai-sdk/​react@​2.0.135 ⏵ 2.0.181				-2
	npm/​dexie-react-hooks@​4.2.0 ⏵ 4.4.0	+1		+1	+4
	npm/​shiki@​3.22.0 ⏵ 3.23.0	+1		+1
	npm/​@​types/​react@​19.2.7 ⏵ 19.2.14	+1		+1
	npm/​vitest@​4.0.18 ⏵ 4.1.5			+1
	npm/​@​vitest/​coverage-v8@​4.0.18 ⏵ 4.1.5			+11
	npm/​nanoid@​5.1.6 ⏵ 5.1.9	+1
	npm/​@​types/​node@​25.3.2 ⏵ 25.6.0
	npm/​postcss@​8.5.9 ⏵ 8.5.10	+1		+1
	npm/​tailwindcss@​4.1.18 ⏵ 4.2.4	+1		+1
	npm/​react@​19.2.3 ⏵ 19.2.5
	npm/​turbo@​2.8.12 ⏵ 2.9.6	+1		+1	-1
	npm/​tailwind-merge@​3.4.1 ⏵ 3.5.0	+1		+1
	npm/​remend@​1.2.1 ⏵ 1.3.0	+1		+1	-4
	npm/​zod@​4.3.3 ⏵ 4.3.6	+1		+1	-7
	npm/​feed@​5.2.0 ⏵ 5.2.1				+6
	npm/​@​larksuiteoapi/​node-sdk@​1.62.0
	npm/​ioredis@​5.8.2 ⏵ 5.10.1	+1		+1
	npm/​@​icons-pack/​react-simple-icons@​13.11.2 ⏵ 13.13.0	+1		+1	+3
	npm/​ai@​6.0.6 ⏵ 5.0.179	-7
	npm/​ai@​6.0.6 ⏵ 6.0.168	-7
	npm/​react-dom@​19.2.3 ⏵ 19.2.5
	npm/​streamdown@​2.3.0 ⏵ 2.5.0	+1			-5
	npm/​jotai@​2.17.1 ⏵ 2.19.1	+1
	npm/​motion@​12.34.0 ⏵ 12.38.0	+1		+1	-3
	npm/​dexie@​4.3.0 ⏵ 4.4.2				-1
	npm/​mermaid@​11.12.2 ⏵ 11.14.0			+1
	npm/​dotenv@​17.2.3 ⏵ 17.4.2
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[bensabic]

Hey there! Thanks for submitting this PR. However at this time, we will have to decline it. But you are more than welcome to submit it as a community adapter.

[mazhe-nerd]

Thanks for the review and for clarifying the path! Totally fair — I'll move the package to a standalone repo, publish to npm, and follow up with a small PR adding the Lark entry to adapters.json (similar to the Webex / Matrix / Resend community adapters).

Appreciate the time you took to look at it.

[mazhe-nerd]

Reopened as #517 — rebased onto main and migrated to the new MDX adapter docs structure from #474. Couldn't
reopen this directly due to the force-push. Thanks for the earlier review!