agentHost: support askQuestions/elicitation and InProgress

[connor4312]

Adopts new AHP additions to support this stuff. askQuestions work and state is updated in the session list.

[github-actions]

Screenshot Changes

Base: 763d8945 Current: 04194827

Changed (1)

agentSessionsViewer/NeedsInput/Dark

Before	After

[Copilot]

Pull request overview

Updates VS Code’s agent host integration to support ask_user-style elicitation (“askQuestions”) end-to-end (protocol → reducer/state → Copilot agent session → chat UI), and surfaces richer live session status (including “InProgress”/“Needs input”) in the session list.

Changes:

• Introduces session input request/answer actions and types in the Agent Host Protocol, plus reducer logic to derive summary status from pending confirmations/input requests.
• Adds Copilot SDK-side user input request handling and maps it through to protocol actions and the chat UI question carousel.
• Extends subscription APIs with an unmanaged “peek” accessor and updates session list/status plumbing to use live state.

Show a summary per file

File	Description
src/vs/workbench/contrib/terminal/test/browser/agentHostPty.test.ts	Updates terminal agent-host test mock for new subscription API.
src/vs/workbench/contrib/chat/test/browser/agentSessions/convertCarouselAnswers.test.ts	Adds unit tests for converting carousel answers into protocol answers.
src/vs/workbench/contrib/chat/test/browser/agentSessions/agentHostChatContribution.test.ts	Updates agent host service mock to support unmanaged subscription peeking.
src/vs/workbench/contrib/chat/browser/agentSessions/agentHost/loggingAgentConnection.ts	Forwards new getSubscriptionUnmanaged method to inner connection.
src/vs/workbench/contrib/chat/browser/agentSessions/agentHost/agentHostSessionListController.ts	Attempts to update sidebar items from live session state/status (incl. NeedsInput/InProgress).
src/vs/workbench/contrib/chat/browser/agentSessions/agentHost/agentHostSessionHandler.ts	Adds input request carousel creation + SessionInputCompleted dispatch; exports convertCarouselAnswers.
src/vs/platform/agentHost/test/node/reducers.test.ts	Adds reducer tests for summary status with tool confirmations and input requests.
src/vs/platform/agentHost/test/node/mockAgent.ts	Extends mock agents with respondToUserInputRequest.
src/vs/platform/agentHost/test/node/copilotAgentSession.test.ts	Adds tests covering CopilotAgentSession user input request/response lifecycle.
src/vs/platform/agentHost/test/node/agentEventMapper.test.ts	Tests mapping user_input_request progress to session/inputRequested.
src/vs/platform/agentHost/test/common/agentSubscription.test.ts	Tests unmanaged subscription access semantics (no refcount impact).
src/vs/platform/agentHost/node/protocolServerHandler.ts	Includes session status in sessionAdded notification summaries.
src/vs/platform/agentHost/node/copilot/copilotAgentSession.ts	Implements SDK ask_user → progress event → renderer response plumbing.
src/vs/platform/agentHost/node/copilot/copilotAgent.ts	Plumbs user input callbacks and forwards user input responses to sessions.
src/vs/platform/agentHost/node/agentSideEffects.ts	Forwards SessionInputCompleted to agent(s).
src/vs/platform/agentHost/node/agentService.ts	Overlays live session status from state manager into listSessions().
src/vs/platform/agentHost/node/agentEventMapper.ts	Maps user_input_request to protocol session/inputRequested.
src/vs/platform/agentHost/electron-browser/remoteAgentHostProtocolClient.ts	Adds unmanaged subscription accessor + forwards status from remote listSessions.
src/vs/platform/agentHost/electron-browser/agentHostService.ts	Adds unmanaged subscription accessor on renderer-side service client.
src/vs/platform/agentHost/common/state/sessionState.ts	Re-exports new session input request/answer enums and types.
src/vs/platform/agentHost/common/state/sessionActions.ts	Re-exports new input-related action types.
src/vs/platform/agentHost/common/state/protocol/version/registry.ts	Registers new action types in version map (still v1).
src/vs/platform/agentHost/common/state/protocol/state.ts	Changes SessionStatus to a numeric bitset; adds inputRequests and session input type definitions.
src/vs/platform/agentHost/common/state/protocol/reducers.ts	Implements summary status derivation + reducers for input request/answer lifecycle.
src/vs/platform/agentHost/common/state/protocol/notifications.ts	Updates notification docs to reflect numeric status encoding.
src/vs/platform/agentHost/common/state/protocol/actions.ts	Adds session/inputRequested, session/inputAnswerChanged, session/inputCompleted actions.
src/vs/platform/agentHost/common/state/protocol/action-origin.generated.ts	Marks new actions as client/server dispatchable in generated origin table.
src/vs/platform/agentHost/common/state/protocol/.ahp-version	Bumps vendored protocol sync hash.
src/vs/platform/agentHost/common/state/agentSubscription.ts	Switches subscription map to ResourceMap and adds unmanaged subscription getter.
src/vs/platform/agentHost/common/agentService.ts	Extends core interfaces with session status, user input request event, and unmanaged subscription API.

Copilot's findings

• Files reviewed: 30/30 changed files
• Comments generated: 7