first cut - migrate settings marked with INTERNAL and adopt to advanced tag

package.nls.json

@@ -160,6 +160,7 @@
 	"github.copilot.config.debugTerminalCommandPatterns": "A list of commands for which the \"Debug Command\" quick fix action should be shown in the debug terminal.",
 	"github.copilot.config.edits.suggestRelatedFilesFromGitHistory": "Whether to suggest related files from git history for the Copilot Edits working set.",
 	"github.copilot.chat.edits.suggestRelatedFilesForTests": "Whether to suggest source files from test files for the Copilot Edits working set.",
+	"github.copilot.config.suggestRelatedFilesFromGitHistory.useEmbeddings": "Use embeddings to suggest related files from git history.",
 	"github.copilot.config.codeGeneration.instructions": "A set of instructions that will be added to Copilot requests that generate code.\nInstructions can come from: \n- a file in the workspace: `{ \"file\": \"fileName\" }`\n- text in natural language: `{ \"text\": \"Use underscore for field names.\" }`\n\nNote: Keep your instructions short and precise. Poor instructions can degrade Copilot's quality and performance.",
 	"github.copilot.config.codeGeneration.instructions.deprecated": "Use instructions files instead. See https://aka.ms/vscode-ghcp-custom-instructions for more information.",
 	"github.copilot.config.codeGeneration.useInstructionFiles": "Controls whether code instructions from `.github/copilot-instructions.md` are added to Copilot requests.\n\nNote: Keep your instructions short and precise. Poor instructions can degrade Copilot's quality and performance. [Learn more](https://aka.ms/github-copilot-custom-instructions) about customizing Copilot.",
@@ -363,6 +364,54 @@
 	"github.copilot.config.tools.memory.enabled": "Enable memory tool to allow models to store and retrieve information across conversations. \n\n**Note**: This is an experimental feature.",
 	"github.copilot.config.completionsFetcher": "Sets the fetcher used for the inline completions.",
 	"github.copilot.config.nesFetcher": "Sets the fetcher used for the next edit suggestions.",
+	"github.copilot.config.debug.overrideChatEngine": "Override the chat model. This allows you to test with different models.\n\n**Note**: This is an advanced debugging setting and should not be used while self-hosting as it may lead to a different experience compared to end-users.",
+	"github.copilot.config.projectLabels.expanded": "Use the expanded format for project labels in prompts.",
+	"github.copilot.config.projectLabels.chat": "Add project labels in chat requests.",
+	"github.copilot.config.projectLabels.inline": "Add project labels in inline edit requests.",
+	"github.copilot.config.workspace.maxLocalIndexSize": "Maximum size of the local workspace index.",
+	"github.copilot.config.workspace.enableFullWorkspace": "Enable full workspace context analysis.",
+	"github.copilot.config.workspace.enableCodeSearch": "Enable code search in workspace context.",
+	"github.copilot.config.workspace.enableEmbeddingsSearch": "Enable embeddings-based search in workspace context.",
+	"github.copilot.config.workspace.preferredEmbeddingsModel": "Preferred embeddings model for semantic search.",
+	"github.copilot.config.workspace.prototypeAdoCodeSearchEndpointOverride": "Override endpoint for Azure DevOps code search prototype.",
+	"github.copilot.config.feedback.onChange": "Enable feedback collection on configuration changes.",
+	"github.copilot.config.review.intent": "Enable intent detection for code review.",
+	"github.copilot.config.notebook.summaryExperimentEnabled": "Enable the notebook summary experiment.",
+	"github.copilot.config.notebook.variableFilteringEnabled": "Enable filtering variables by cell document symbols.",
+	"github.copilot.config.notebook.alternativeFormat": "Alternative document format for notebooks.",
+	"github.copilot.config.notebook.alternativeNESFormat.enabled": "Enable alternative format for Next Edit Suggestions in notebooks.",
+	"github.copilot.config.editSourceTracking.showDecorations": "Show decorations for edit source tracking.",
+	"github.copilot.config.editSourceTracking.showStatusBar": "Show status bar item for edit source tracking.",
+	"github.copilot.config.localWorkspaceRecording.enabled": "Enable local workspace recording for analysis.",
+	"github.copilot.config.editRecording.enabled": "Enable edit recording for analysis.",
+	"github.copilot.config.temporalContext.maxAge": "Maximum age (in editor changes) for temporal context.",
+	"github.copilot.config.temporalContext.preferSameLang": "Prefer same language files in temporal context.",
+	"github.copilot.config.codesearch.agent.enabled": "Enable code search capabilities in agent mode.",
+	"github.copilot.config.agent.temperature": "Temperature setting for agent mode requests.",
+	"github.copilot.config.instantApply.shortContextModelName": "Model name for short context instant apply.",
+	"github.copilot.config.instantApply.shortContextLimit": "Token limit for short context instant apply.",
+	"github.copilot.config.summarizeAgentConversationHistoryThreshold": "Threshold for summarizing agent conversation history.",
+	"github.copilot.config.agentHistorySummarizationMode": "Mode for agent history summarization.",
+	"github.copilot.config.agentHistorySummarizationWithPromptCache": "Use prompt caching for agent history summarization.",
+	"github.copilot.config.agentHistorySummarizationForceGpt41": "Force GPT-4.1 for agent history summarization.",
+	"github.copilot.config.useResponsesApiTruncation": "Use Responses API for truncation.",
+	"github.copilot.config.enableReadFileV2": "Enable version 2 of the read file tool.",
+	"github.copilot.config.enableAskAgent": "Enable the Ask agent for answering questions.",
+	"github.copilot.config.omitBaseAgentInstructions": "Omit base agent instructions from prompts.",
+	"github.copilot.config.promptFileContextProvider.enabled": "Enable prompt file context provider.",
+	"github.copilot.config.tools.defaultToolsGrouped": "Group default tools in prompts.",
+	"github.copilot.config.virtualTools.embeddingRanking": "Use embedding-based ranking for virtual tools.",
+	"github.copilot.config.multiReplaceStringGrok.enabled": "Enable multi-replace string with Grok.",
+	"github.copilot.config.claudeCode.enabled": "Enable Claude Code agent.",
+	"github.copilot.config.claudeCode.debug": "Enable debug mode for Claude Code agent.",
+	"github.copilot.config.copilotCLI.enabled": "Enable Copilot CLI integration.",
+	"github.copilot.config.cli.isolation.enabled": "Enable CLI isolation for agent sessions.",
+	"github.copilot.config.cli.mcp.enabled": "Enable Model Context Protocol (MCP) server for CLI.",
+	"github.copilot.config.copilotCodingAgent.enabled": "Enable Copilot Coding Agent (cloud).",
+	"github.copilot.config.gpt5AlternativePatch": "Enable GPT-5 alternative patch format.",
+	"github.copilot.config.inlineEdits.triggerOnEditorChangeAfterSeconds": "Trigger inline edits after editor has been idle for this many seconds.",
+	"github.copilot.config.inlineEdits.nextCursorPrediction.displayLine": "Display predicted cursor line for next edit suggestions.",
+	"github.copilot.config.inlineEdits.nextCursorPrediction.currentFileMaxTokens": "Maximum tokens for current file in next cursor prediction.",
 	"github.copilot.command.refreshAgentSessions": "Refresh Agent Sessions",
 	"github.copilot.command.deleteAgentSession": "Delete Agent Session",
 	"github.copilot.command.cli.sessions.resumeInTerminal": "Resume Agent Session in Terminal",

src/extension/agents/claude/node/claudeCodeAgent.ts

@@ -238,7 +238,7 @@ export class ClaudeCodeSession extends Disposable {
 	private async _startSession(token: vscode.CancellationToken): Promise<void> {
 		// Build options for the Claude Code SDK
 		// process.env.DEBUG = '1'; // debug messages from sdk.mjs
-		const isDebugEnabled = this.configService.getConfig(ConfigKey.Internal.ClaudeCodeDebugEnabled);
+		const isDebugEnabled = this.configService.getConfig(ConfigKey.AdvancedExperimental.ClaudeCodeDebugEnabled);
 		this.logService.trace(`appRoot: ${this.envService.appRoot}`);
 		const pathSep = isWindows ? ';' : ':';
 		const options: Options = {

src/extension/agents/copilotcli/node/mcpHandler.ts

@@ -89,7 +89,7 @@ export class CopilotCLIMCPHandler implements ICopilotCLIMCPHandler {
 	) { }
 
 	public async loadMcpConfig(workingDirectory: string | undefined): Promise<Record<string, MCPServerConfig> | undefined> {
-		if (!this.configurationService.getConfig(ConfigKey.Internal.CLIMCPServerEnabled)) {
+		if (!this.configurationService.getConfig(ConfigKey.AdvancedExperimental.CLIMCPServerEnabled)) {
 			return undefined;
 		}
 

src/extension/chatSessions/vscode-node/copilotCLIChatSessionsContribution.ts

@@ -240,7 +240,7 @@ export class CopilotCLIChatSessionContentProvider implements vscode.ChatSessionC
 			[MODELS_OPTION_ID]: _sessionModel.get(copilotcliSessionId)?.id ?? defaultModel.id,
 		};
 
-		if (!existingSession && this.configurationService.getConfig(ConfigKey.Internal.CLIIsolationEnabled)) {
+		if (!existingSession && this.configurationService.getConfig(ConfigKey.AdvancedExperimental.CLIIsolationEnabled)) {
 			options[ISOLATION_OPTION_ID] = isolationEnabled ? 'enabled' : 'disabled';
 		}
 		const history = existingSession?.object?.getChatHistory() || [];

src/extension/chatSessions/vscode-node/copilotCLITerminalIntegration.ts

@@ -59,7 +59,7 @@ export class CopilotCLITerminalIntegration extends Disposable implements ICopilo
 	}
 
 	private async initialize(): Promise<void> {
-		const enabled = this.configurationService.getConfig(ConfigKey.Internal.CopilotCLIEnabled);
+		const enabled = this.configurationService.getConfig(ConfigKey.AdvancedExperimental.CopilotCLIEnabled);
 		if (!enabled) {
 			return;
 		}

src/extension/configuration/vscode-node/configurationMigration.ts

@@ -10,7 +10,7 @@
 
 
 import { ConfigurationTarget, Uri, window, workspace, WorkspaceFolder } from 'vscode';
-import { Emitter } from '../../../util/vs/base/common/event';
+import { ConfigurationKeyValuePairs, ConfigurationMigration, ConfigurationMigrationRegistry, ConfigurationValue } from '../../../platform/configuration/common/configurationService';
 import { DisposableStore, IDisposable } from '../../../util/vs/base/common/lifecycle';
 import { localize } from '../../../util/vs/nls';
 import { IExtensionContribution } from '../../common/contributions';
@@ -35,28 +35,6 @@ export const Extensions = {
 	ConfigurationMigration: 'base.contributions.configuration.migration'
 };
 
-export type ConfigurationValue = { value: any | undefined /* Remove */ };
-export type ConfigurationKeyValuePairs = [string, ConfigurationValue][];
-export type ConfigurationMigrationFn = (value: any) => ConfigurationValue | ConfigurationKeyValuePairs | Promise<ConfigurationValue | ConfigurationKeyValuePairs>;
-export type ConfigurationMigration = { key: string; migrateFn: ConfigurationMigrationFn };
-
-export interface IConfigurationMigrationRegistry {
-	registerConfigurationMigrations(configurationMigrations: ConfigurationMigration[]): void;
-}
-
-class ConfigurationMigrationRegistryImpl implements IConfigurationMigrationRegistry {
-	readonly migrations: ConfigurationMigration[] = [];
-
-	private readonly _onDidRegisterConfigurationMigrations = new Emitter<ConfigurationMigration[]>();
-	readonly onDidRegisterConfigurationMigration = this._onDidRegisterConfigurationMigrations.event;
-
-	registerConfigurationMigrations(configurationMigrations: ConfigurationMigration[]): void {
-		this.migrations.push(...configurationMigrations);
-	}
-}
-
-export const ConfigurationMigrationRegistry = new ConfigurationMigrationRegistryImpl();
-
 export class ConfigurationMigrationContribution implements IExtensionContribution {
 	private readonly _disposables = new DisposableStore();
 

src/extension/context/node/resolvers/promptWorkspaceLabels.ts

@@ -56,7 +56,7 @@ export class PromptWorkspaceLabels implements IPromptWorkspaceLabels {
 	}
 
 	public async collectContext(): Promise<void> {
-		const expandedLabels = this._configurationService.getExperimentBasedConfig(ConfigKey.Internal.ProjectLabelsExpanded, this._experimentationService);
+		const expandedLabels = this._configurationService.getExperimentBasedConfig(ConfigKey.AdvancedExperimentalExperiments.ProjectLabelsExpanded, this._experimentationService);
 		this.strategy = expandedLabels ? PromptWorkspaceLabelsStrategy.Expanded : PromptWorkspaceLabelsStrategy.Basic;
 		await this.workspaceLabels.collectContext();
 

src/extension/conversation/vscode-node/feedbackCollection.ts

@@ -25,7 +25,7 @@ export function startFeedbackCollection(accessor: ServicesAccessor) {
 	const instantiationService = accessor.get(IInstantiationService);
 	const logService = accessor.get(ILogService);
 	const disposables = new DisposableStore();
-	const enabled = configurationService.getConfig(ConfigKey.Internal.FeedbackOnChange);
+	const enabled = configurationService.getConfig(ConfigKey.AdvancedExperimental.FeedbackOnChange);
 	if (!enabled) {
 		return disposables;
 	}

src/extension/inlineEdits/node/nextEditCache.ts

@@ -67,7 +67,7 @@ export class NextEditCache extends Disposable {
 				}
 				// if editor-change triggering is allowed,
 				// 	it means an edit in file A can result in a cached edit for file B to be less relevant than with the edits in file A included
-				if (configService.getExperimentBasedConfig(ConfigKey.Internal.InlineEditsTriggerOnEditorChangeAfterSeconds, expService) !== undefined) {
+				if (configService.getExperimentBasedConfig(ConfigKey.AdvancedExperimentalExperiments.InlineEditsTriggerOnEditorChangeAfterSeconds, expService) !== undefined) {
 					for (const [k, v] of this._sharedCache.entries()) {
 						if (v.docId !== doc.id) {
 							this._sharedCache.deleteKey(k);

src/extension/inlineEdits/node/nextEditProvider.ts

@@ -323,7 +323,7 @@ export class NextEditProvider extends Disposable implements INextEditProvider<Ne
 			const lineWithCode = documentAtInvocationTime.getLineAt(editPosition.startLineNumber);
 			const trimmedLineWithCode = lineWithCode.trimStart();
 			const shortenedLineWithCode = trimmedLineWithCode.slice(0, 40);
-			const label = ['.ts', '.tsx', '.js', '.jsx'].includes(docId.extension) && this._configService.getExperimentBasedConfig(ConfigKey.Internal.InlineEditsNextCursorPredictionDisplayLine, this._expService)
+			const label = ['.ts', '.tsx', '.js', '.jsx'].includes(docId.extension) && this._configService.getExperimentBasedConfig(ConfigKey.AdvancedExperimentalExperiments.InlineEditsNextCursorPredictionDisplayLine, this._expService)
 				? `Jump to line ${editPosition.startLineNumber} | ${shortenedLineWithCode.length === trimmedLineWithCode.length ? shortenedLineWithCode : trimmedLineWithCode + '...'}`
 				: `Jump to line ${editPosition.startLineNumber}`;
 			const displayLocation: INextEditDisplayLocation = {

src/extension/inlineEdits/vscode-node/features/diagnosticsCompletionProcessor.ts

@@ -34,11 +34,11 @@ import { StringText } from '../../../../util/vs/editor/common/core/text/abstract
 import { getInformationDelta, InformationDelta } from '../../common/informationDelta';
 import { RejectionCollector } from '../../common/rejectionCollector';
 import { IVSCodeObservableDocument, VSCodeWorkspace } from '../parts/vscodeWorkspace';
+import { toInternalPosition } from '../utils/translations';
 import { AnyDiagnosticCompletionItem, AnyDiagnosticCompletionProvider } from './diagnosticsBasedCompletions/anyDiagnosticsCompletionProvider';
 import { AsyncDiagnosticCompletionProvider } from './diagnosticsBasedCompletions/asyncDiagnosticsCompletionProvider';
 import { Diagnostic, DiagnosticCompletionItem, DiagnosticInlineEditRequestLogContext, distanceToClosestDiagnostic, IDiagnosticCompletionProvider, log, logList, sortDiagnosticsByDistance } from './diagnosticsBasedCompletions/diagnosticsCompletions';
 import { ImportDiagnosticCompletionItem, ImportDiagnosticCompletionProvider } from './diagnosticsBasedCompletions/importDiagnosticsCompletionProvider';
-import { toInternalPosition } from '../utils/translations';
 
 interface IDiagnosticsCompletionState<T extends DiagnosticCompletionItem = DiagnosticCompletionItem> {
 	completionItem: T | null;

src/extension/inlineEdits/vscode-node/inlineCompletionProvider.ts

@@ -120,7 +120,7 @@ export class InlineCompletionProviderImpl implements InlineCompletionItemProvide
 		@IWorkspaceService private readonly _workspaceService: IWorkspaceService,
 	) {
 		this._tracer = createTracer(['NES', 'Provider'], (s) => this._logService.trace(s));
-		this._displayNextEditorNES = this._configurationService.getExperimentBasedConfig(ConfigKey.Internal.UseAlternativeNESNotebookFormat, this._expService);
+		this._displayNextEditorNES = this._configurationService.getExperimentBasedConfig(ConfigKey.AdvancedExperimentalExperiments.UseAlternativeNESNotebookFormat, this._expService);
 	}
 
 	// copied from `vscodeWorkspace.ts` `DocumentFilter#_enabledLanguages`

src/extension/inlineEdits/vscode-node/inlineEditModel.ts

@@ -217,7 +217,7 @@ export class InlineEditTriggerer extends Disposable {
 
 			const selectionLine = range.start.line;
 
-			const triggerOnActiveEditorChange = this._configurationService.getExperimentBasedConfig(ConfigKey.Internal.InlineEditsTriggerOnEditorChangeAfterSeconds, this._expService);
+			const triggerOnActiveEditorChange = this._configurationService.getExperimentBasedConfig(ConfigKey.AdvancedExperimentalExperiments.InlineEditsTriggerOnEditorChangeAfterSeconds, this._expService);
 			// If we're in a notebook cell,
 			// Its possible user made changes in one cell and now is moving to another cell
 			// In such cases we should account for the possibility of the user wanting to edit the new cell and trigger suggestions.
@@ -264,7 +264,7 @@ export class InlineEditTriggerer extends Disposable {
 
 	private _maybeTriggerOnDocumentSwitch(e: vscode.TextEditorSelectionChangeEvent, isSameDoc: boolean, parentTracer: ITracer): boolean {
 		const tracer = parentTracer.subNoEntry('editorSwitch');
-		const triggerAfterSeconds = this._configurationService.getExperimentBasedConfig(ConfigKey.Internal.InlineEditsTriggerOnEditorChangeAfterSeconds, this._expService);
+		const triggerAfterSeconds = this._configurationService.getExperimentBasedConfig(ConfigKey.AdvancedExperimentalExperiments.InlineEditsTriggerOnEditorChangeAfterSeconds, this._expService);
 		if (triggerAfterSeconds === undefined) {
 			tracer.trace('document switch disabled');
 			return false;

src/extension/inlineEdits/vscode-node/inlineEditProviderFeature.ts

@@ -87,7 +87,7 @@ export class InlineEditProviderFeature extends Disposable implements IExtensionC
 		const tracer = createTracer(['NES', 'Feature'], (s) => this._logService.trace(s));
 		const constructorTracer = tracer.sub('constructor');
 		const hasUpdatedNesSettingKey = 'copilot.chat.nextEdits.hasEnabledNesInSettings';
-		const enableEnhancedNotebookNES = this._configurationService.getExperimentBasedConfig(ConfigKey.Internal.UseAlternativeNESNotebookFormat, _experimentationService) || this._configurationService.getExperimentBasedConfig(ConfigKey.UseAlternativeNESNotebookFormat, _experimentationService);
+		const enableEnhancedNotebookNES = this._configurationService.getExperimentBasedConfig(ConfigKey.AdvancedExperimentalExperiments.UseAlternativeNESNotebookFormat, _experimentationService) || this._configurationService.getExperimentBasedConfig(ConfigKey.UseAlternativeNESNotebookFormat, _experimentationService);
 		const unificationState = unificationStateObservable(this);
 
 		commands.executeCommand('setContext', useEnhancedNotebookNESContextKey, enableEnhancedNotebookNES);

src/extension/inlineEdits/vscode-node/parts/vscodeWorkspace.ts

@@ -44,7 +44,7 @@ export class VSCodeWorkspace extends ObservableWorkspace implements IDisposable
 	private readonly _store = new DisposableStore();
 	private readonly _filter = this._instaService.createInstance(DocumentFilter);
 	private get _useAlternativeNotebookFormat(): boolean {
-		return this._configurationService.getExperimentBasedConfig(ConfigKey.Internal.UseAlternativeNESNotebookFormat, this._experimentationService)
+		return this._configurationService.getExperimentBasedConfig(ConfigKey.AdvancedExperimentalExperiments.UseAlternativeNESNotebookFormat, this._experimentationService)
 			|| this._configurationService.getExperimentBasedConfig(ConfigKey.UseAlternativeNESNotebookFormat, this._experimentationService);
 	}
 	private readonly _markdownNotebookCells = new Lazy<ResourceSet>(() => {