support autopilot mode

[justschen]

checks for tool calls, loops on max requests

ref microsoft/vscode#296691

[Copilot]

Pull request overview

Adds support for an “autopilot” permission level in chat requests and adapts the tool-calling loop behavior to continue iterating without user confirmation, aiming to keep the agent running until explicit completion.

Changes:

• Introduces permissionLevel on ChatRequest (private proposed API) to convey auto-approval/autopilot behavior.
• Updates ToolCallingLoop to (a) extend the max-iteration limit automatically for autoApprove/autopilot, and (b) add an internal “autopilot stop hook” that tries to continue until task_complete.
• Filters task_complete out of tool lists outside autopilot mode.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated 4 comments.

File	Description
src/extension/vscode.proposed.chatParticipantPrivate.d.ts	Adds permissionLevel to ChatRequest to signal auto-approval/autopilot behavior.
src/extension/intents/node/toolCallingLoop.ts	Extends iteration limits for auto-approval modes and adds an autopilot continuation mechanism based on task_complete.