Gate Dictation on Copilot entitlement

[meganrogge]

Summary

• expose built-in Dictation only for paid Copilot plans
• keep local Dictation available for eligible Enterprise users, but disable the MAI backend for external Enterprise accounts
• preserve MAI access for internal Enterprise users through the existing internal-organization entitlement signal
• reject direct ineligible starts, cancel active sessions when entitlement is lost, and refresh the segmented input control when entitlement changes

This is client-side product gating only; MAI must continue to authenticate requests and enforce entitlement server-side.

Testing

• npm run transpile-client
• ESLint on changed files
• Dictation, speech-to-text action, Voice input mode, and Dictation session unit tests (19 passing)

[Copilot]

Pull request overview

Adds Copilot entitlement gating to built-in Dictation.

Changes:

• Restricts Dictation and MAI by plan and organization.
• Refreshes UI availability and cancels sessions on entitlement changes.
• Adds entitlement tests.

Show a summary per file

File	Description
chatSpeechToTextService.ts	Implements entitlement gating and cancellation.
voiceInputMode.ts	Refreshes Dictation availability.
chatSpeechToTextService.test.ts	Tests plan/backend eligibility.

Review details

Suppressed comments (2)

src/vs/workbench/contrib/chat/browser/speechToText/chatSpeechToTextService.ts:517

• isConfigured evaluates the currently selected dictation.model, not the backend used by the in-progress session. If an MAI session starts, the setting is switched to local, and entitlement then changes to external Enterprise, this remains true and the cloud session is not cancelled. Evaluate entitlement against _activeBackend for active sessions.

			if (!this.isConfigured && this._state !== ChatSpeechToTextState.Idle) {
				this.cancel();
			}

src/vs/workbench/contrib/chat/browser/speechToText/chatSpeechToTextService.ts:658

• This eligibility check can become stale while start() awaits microphone permission and backend/capture setup. The service remains Idle until recording begins, so the entitlement listener skips cancellation; an entitlement loss during those awaits can therefore still end in Recording. Track/cancel an in-flight start (or revalidate with teardown before entering Recording).

		if (!isDictationEntitled(this._chatEntitlementService.entitlement, this._chatEntitlementService.isInternal, backend === 'mai')) {

• Files reviewed: 3/3 changed files
• Comments generated: 1
• Review effort level: Balanced

[meganrogge]

cc @cwebster-99