Few chronicle updates

[vijayupadya]

Few chronicle updates.
Adds delete sessions support, updates redindex, adds sync status indicator UX.

[Copilot]

Pull request overview

Adds support for Copilot “session sync” as a core VS Code setting (with enterprise policy), and updates the Copilot extension’s “chronicle”/session indexing feature flags and tooling to align with the new setting.

Changes:

• Introduces chat.sessionSync.enabled (core) with CopilotSessionSync policy wiring and policy-data export updates.
• Adds a new public Copilot extension setting github.copilot.chat.localIndex.enabled with migration from the prior team-internal key.
• Extends chronicle tooling: session-sync enablement suggestion UX and a command to delete synced cloud session data, plus a cloud API client method.

Show a summary per file

File	Description
src/vs/workbench/services/accounts/browser/defaultAccount.ts	Threads a new session_sync_enabled entitlement/policy flag from token entitlements into cached policy data.
src/vs/workbench/contrib/chat/common/constants.ts	Adds ChatConfiguration.SessionSyncEnabled constant.
src/vs/workbench/contrib/chat/browser/chat.contribution.ts	Registers chat.sessionSync.enabled setting with enterprise policy mapping and localization.
src/vs/base/common/defaultAccount.ts	Extends IPolicyData with session_sync_enabled.
extensions/copilot/src/platform/configuration/common/configurationService.ts	Adds Advanced.LocalIndexEnabled via defineAndMigrateExpSetting and deprecates the old team-internal key.
extensions/copilot/src/extension/intents/node/chronicleIntent.ts	Switches chronicle availability gating to the new local-index setting (with fallback logic).
extensions/copilot/src/extension/contextKeys/vscode-node/contextKeys.contribution.ts	Updates github.copilot.sessionSearch.enabled context key to follow the new local-index setting (with fallback logic).
extensions/copilot/src/extension/chronicle/vscode-node/sessionStoreTracker.ts	Gates local session store tracking on the new local-index setting (with fallback logic).
extensions/copilot/src/extension/chronicle/vscode-node/remoteSessionExporter.ts	Gates cloud exporting on local index + core session sync; adds sync suggestion and delete-cloud-sessions command.
extensions/copilot/src/extension/chronicle/node/cloudSessionApiClient.ts	Adds deleteSession endpoint call used by the delete command.
extensions/copilot/src/extension/chronicle/common/test/sessionIndexingPreference.spec.ts	Updates tests to reflect new “session sync” gate semantics.
extensions/copilot/src/extension/chronicle/common/sessionIndexingPreference.ts	Replaces repo-exclusion/cloud-sync settings with core chat.sessionSync.enabled consent check.
extensions/copilot/package.nls.json	Adds command title localization; renames local-index setting localization key usage.
extensions/copilot/package.json	Contributes new delete command and new github.copilot.chat.localIndex.enabled setting.
build/lib/policies/policyData.jsonc	Adds exported policy metadata for chat.sessionSync.enabled and updates policy export contents.

Copilot's findings

Comments suppressed due to low confidence (3)

extensions/copilot/src/extension/chronicle/vscode-node/remoteSessionExporter.ts:141

• This autorun only re-runs when observables are read. getNonExtensionConfig('chat.sessionSync.enabled') is not observable, so toggling the core setting at runtime won’t start/stop the exporter until some other observable changes. Consider wiring cloudEnabled through an observable (e.g., observableFromEvent on onDidChangeConfiguration + affectsConfiguration('chat.sessionSync.enabled')).

			const localEnabled = this._configService.isConfigured(ConfigKey.Advanced.LocalIndexEnabled) ? localEnabledNew.read(reader) : localEnabledOld.read(reader);
			const cloudEnabled = this._configService.getNonExtensionConfig<boolean>('chat.sessionSync.enabled') ?? false;
			if (!localEnabled || !cloudEnabled) {
				// Suggest session sync when local index is on but sync is off
				if (localEnabled && !cloudEnabled) {

extensions/copilot/src/extension/chronicle/vscode-node/remoteSessionExporter.ts:273

• The success showInformationMessage concatenates multiple localized fragments (and a raw space) into one message. Please prefer a single localized string with placeholders (or separate showInformationMessage calls) to avoid broken grammar/order in non-English locales.

		if (errors > 0) {
			vscode.window.showWarningMessage(vscode.l10n.t('Deleted {0}, not found {1}, errors {2}.', deleted, notFound, errors));
		} else {
			vscode.window.showInformationMessage(vscode.l10n.t('{0} session(s) deleted from the cloud.', deleted) + (notFound > 0 ? ' ' + vscode.l10n.t('{0} not found in cloud (local-only or already deleted).', notFound) : ''));
		}

extensions/copilot/src/extension/chronicle/vscode-node/remoteSessionExporter.ts:192

• The button label "Don't Show Again" is misleading here because there’s no persisted state; the prompt is only suppressed for the current session via _syncSuggestionShown. Either persist a dismissal flag (globalState/storage) or rename the action to something like "Not Now".

		vscode.window.showInformationMessage(
			vscode.l10n.t('Session sync is available for richer cross-device Copilot session history.'),
			vscode.l10n.t('Enable'),
			vscode.l10n.t('Don\'t Show Again'),
		).then(choice => {

• Files reviewed: 15/15 changed files
• Comments generated: 7

[github-actions]

Base: 061bc2c8 Current: bd17322a

No screenshot changes.

[Copilot]

Copilot's findings

Comments suppressed due to low confidence (1)

extensions/copilot/src/extension/chronicle/vscode-node/remoteSessionExporter.ts:499

• This unconditionally sets sync state to up-to-date after the delete loop, even when session sync is disabled. Keep the state consistent with enablement (e.g. don’t transition out of not-enabled when chat.sessionSync.enabled is false).

		this._setSyncState({ kind: 'up-to-date', syncedCount: this._getLocalSyncedCount() });
	}

• Files reviewed: 29/29 changed files
• Comments generated: 8