Op: correct
Restores: review:4375
- Widen ExtensionAskDialogResult to a union with { kind: "chat" } variant
so AskTool can distinguish chat handoff from cancel (undefined).
- AskDialogComponent.#finishChat passes { kind: "chat" } via onChat.
- Controller settles { kind: "chat" } locally and propagates a "chat"
sentinel through the guest/collab path instead of returning undefined.
- AskTool returns a chat-redirect AgentToolResult (chatRedirect details)
instead of aborting with ToolAbortError.
- #promptForNote prefills with the existing note only when editing the
same row (noteRowKey === rowItem.key), preventing cross-row note leaks.
- Add ask-dialog and ask tool tests for chat redirect and row-specific
note prefill.