feat(chat): complete runtime decoupling — compositions back to @cacheplane/chat#136

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feat/chat-runtime-decoupling-phase-2

Apr 22, 2026

Commits on Apr 22, 2026

docs: phase-2 design for finishing chat-runtime decoupling

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docs: phase-2 implementation plan

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feat(chat): add ChatAgentWithHistory sub-contract and ChatCheckpoint

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feat(chat): extend mockChatAgent with optional history

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test(chat): add ChatAgentWithHistory conformance helper

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feat(langgraph): widen toChatAgent to ChatAgentWithHistory, translate history

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refactor(chat,langgraph): move chat-timeline primitive to chat, retarget to ChatAgentWithHistory

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refactor(chat,langgraph): move chat-timeline-slider to chat, retarget to ChatAgentWithHistory

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refactor(chat,langgraph): move chat-debug composition tree to chat, retarget to ChatCheckpoint

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refactor(cockpit): rebind chat-debug and chat-timeline demos to @cacheplane/chat

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chore(chat): allow vitest in @nx/dependency-checks ignore list

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chore(langgraph): drop unused @angular/common, @angular/platform-browser peer-deps

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