add isSystemInitiated and relevant changes

[meganrogge]

No description provided.

[Copilot]

Pull request overview

Adds a new “system-initiated” classification to chat requests so the extension can (a) mark requests that were triggered automatically by VS Code, (b) propagate that through prompt construction + fetch paths, and (c) emit distinct telemetry / interaction headers (for downstream billing/analytics differentiation).

Changes:

• Introduces isSystemInitiated on the (proposed) VS Code ChatRequest shape and propagates it into the agent prompt layer.
• Adds ISystemInitiatedRequestOptions and threads it through networking/fetcher APIs to set a distinct X-Interaction-Type.
• Emits isSystemInitiated in panel telemetry and adjusts “userInitiatedRequest” calculation to exclude system-initiated requests.

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
src/platform/networking/common/networking.ts	Extends request-kind options and maps system-initiated to conversation-system-initiated interaction header.
src/extension/vscode.proposed.chatParticipantPrivate.d.ts	Adds isSystemInitiated?: boolean to the proposed ChatRequest API docs.
src/extension/prompts/node/agent/agentPrompt.tsx	Plumbs isSystemInitiated into AgentUserMessage and skips wrapping/context for system-initiated prompts.
src/extension/prompt/node/defaultIntentRequestHandler.ts	Sets telemetry subtype + request kind options when the request is system-initiated.
src/extension/prompt/node/chatParticipantTelemetry.ts	Adds isSystemInitiated property to panel.request telemetry payload/GDPR schema.
src/extension/prompt/node/chatMLFetcher.ts	Extends requestKindOptions typing and maps system-initiated to interaction type for WebSocket fetch path.
src/extension/intents/node/toolCallingLoop.ts	Ensures userInitiatedRequest is false for system-initiated requests.