Don't use activate() in cline-core

Have separate code paths to set up the extension and cline-core.

This means the cline-core is not running all the vscode setup and is
only using one `Controller` (the one from the WebviewProvider).

Move the shared logic into common.ts.

src/common.ts

@@ -0,0 +1,97 @@
+// The module 'vscode' contains the VS Code extensibility API
+// Import the module and reference it with the alias vscode in your code below
+
+import * as vscode from "vscode"
+import {
+	migrateCustomInstructionsToGlobalRules,
+	migrateWelcomeViewCompleted,
+	migrateWorkspaceToGlobalStorage,
+} from "./core/storage/state-migrations"
+import { WebviewProvider } from "./core/webview"
+import { Logger } from "./services/logging/Logger"
+import { PostHogClientProvider } from "./services/posthog/PostHogClientProvider"
+import { WebviewProviderType } from "./shared/webview/types"
+import "./utils/path" // necessary to have access to String.prototype.toPosix
+
+import { HostProvider } from "@/hosts/host-provider"
+import { FileContextTracker } from "./core/context/context-tracking/FileContextTracker"
+import { telemetryService } from "./services/posthog/PostHogClientProvider"
+import { ShowMessageType } from "./shared/proto/host/window"
+import { getLatestAnnouncementId } from "./utils/announcements"
+/**
+ * Performs intialization for Cline that is common to all platforms.
+ *
+ * @param context
+ * @returns The webview provider
+ */
+export async function initialize(context: vscode.ExtensionContext): Promise<WebviewProvider> {
+	// Initialize PostHog client provider
+	const distinctId = context.globalState.get<string>("cline.distinctId")
+	PostHogClientProvider.getInstance(distinctId)
+
+	Logger.log("Cline extension activated")
+
+	// Migrate custom instructions to global Cline rules (one-time cleanup)
+	await migrateCustomInstructionsToGlobalRules(context)
+
+	// Migrate welcomeViewCompleted setting based on existing API keys (one-time cleanup)
+	await migrateWelcomeViewCompleted(context)
+
+	// Migrate workspace storage values back to global storage (reverting previous migration)
+	await migrateWorkspaceToGlobalStorage(context)
+
+	// Clean up orphaned file context warnings (startup cleanup)
+	await FileContextTracker.cleanupOrphanedWarnings(context)
+
+	const sidebarWebview = HostProvider.get().createWebviewProvider(WebviewProviderType.SIDEBAR)
+
+	await showVersionUpdateAnnouncement(context)
+
+	telemetryService.captureExtensionActivated()
+
+	return sidebarWebview
+}
+
+async function showVersionUpdateAnnouncement(context: vscode.ExtensionContext) {
+	// Version checking for autoupdate notification
+	const currentVersion = context.extension.packageJSON.version
+	const previousVersion = context.globalState.get<string>("clineVersion")
+	// Perform post-update actions if necessary
+	try {
+		if (!previousVersion || currentVersion !== previousVersion) {
+			Logger.log(`Cline version changed: ${previousVersion} -> ${currentVersion}. First run or update detected.`)
+
+			// Use the same condition as announcements: focus when there's a new announcement to show
+			const lastShownAnnouncementId = context.globalState.get<string>("lastShownAnnouncementId")
+			const latestAnnouncementId = getLatestAnnouncementId(context)
+
+			if (lastShownAnnouncementId !== latestAnnouncementId) {
+				// Focus Cline when there's a new announcement to show (major/minor updates or fresh installs)
+				const message = previousVersion
+					? `Cline has been updated to v${currentVersion}`
+					: `Welcome to Cline v${currentVersion}`
+				await vscode.commands.executeCommand("claude-dev.SidebarProvider.focus")
+				await new Promise((resolve) => setTimeout(resolve, 200))
+				HostProvider.window.showMessage({
+					type: ShowMessageType.INFORMATION,
+					message,
+				})
+			}
+			// Always update the main version tracker for the next launch.
+			await context.globalState.update("clineVersion", currentVersion)
+		}
+	} catch (error) {
+		const errorMessage = error instanceof Error ? error.message : String(error)
+		console.error(`Error during post-update actions: ${errorMessage}, Stack trace: ${error.stack}`)
+	}
+}
+
+/**
+ * Performs cleanup when Cline is deactivated that is common to all platforms.
+ */
+export async function tearDown(): Promise<void> {
+	PostHogClientProvider.getInstance().dispose()
+
+	// Dispose all webview instances
+	await WebviewProvider.disposeAllInstances()
+}

src/core/controller/state/subscribeToState.ts

@@ -3,6 +3,7 @@ import { Controller } from "../index"
 import { EmptyRequest } from "@shared/proto/cline/common"
 import { StreamingResponseHandler, getRequestRegistry } from "../grpc-handler"
 import { State } from "@shared/proto/cline/state"
+import { ExtensionState } from "@/shared/ExtensionMessage"
 
 // Keep track of active state subscriptions by controller ID
 const activeStateSubscriptions = new Map<string, StreamingResponseHandler<State>>()
@@ -52,7 +53,7 @@ export async function subscribeToState(
  * @param controllerId The ID of the controller to send the state to
  * @param state The state to send
  */
-export async function sendStateUpdate(controllerId: string, state: any): Promise<void> {
+export async function sendStateUpdate(controllerId: string, state: ExtensionState): Promise<void> {
 	// Get the subscription for this specific controller
 	const responseStream = activeStateSubscriptions.get(controllerId)
 

src/extension.ts

@@ -1,10 +1,10 @@
 // The module 'vscode' contains the VS Code extensibility API
 // Import the module and reference it with the alias vscode in your code below
 
-import assert from "node:assert"
-import { setTimeout as setTimeoutPromise } from "node:timers/promises"
 import { DIFF_VIEW_URI_SCHEME } from "@hosts/vscode/VscodeDiffViewProvider"
 import { WebviewProviderType as WebviewProviderTypeEnum } from "@shared/proto/cline/ui"
+import assert from "node:assert"
+import { setTimeout as setTimeoutPromise } from "node:timers/promises"
 import pWaitFor from "p-wait-for"
 import * as vscode from "vscode"
 import { sendAccountButtonClickedEvent } from "./core/controller/ui/subscribeToAccountButtonClicked"
@@ -12,33 +12,26 @@ import { sendChatButtonClickedEvent } from "./core/controller/ui/subscribeToChat
 import { sendHistoryButtonClickedEvent } from "./core/controller/ui/subscribeToHistoryButtonClicked"
 import { sendMcpButtonClickedEvent } from "./core/controller/ui/subscribeToMcpButtonClicked"
 import { sendSettingsButtonClickedEvent } from "./core/controller/ui/subscribeToSettingsButtonClicked"
-import {
-	migrateCustomInstructionsToGlobalRules,
-	migrateWelcomeViewCompleted,
-	migrateWorkspaceToGlobalStorage,
-} from "./core/storage/state-migrations"
 import { WebviewProvider } from "./core/webview"
 import { createClineAPI } from "./exports"
 import { Logger } from "./services/logging/Logger"
-import { PostHogClientProvider } from "./services/posthog/PostHogClientProvider"
 import { cleanupTestMode, initializeTestMode } from "./services/test/TestMode"
 import { WebviewProviderType } from "./shared/webview/types"
 import "./utils/path" // necessary to have access to String.prototype.toPosix
 
-import type { ExtensionContext } from "vscode"
 import { HostProvider } from "@/hosts/host-provider"
 import { vscodeHostBridgeClient } from "@/hosts/vscode/hostbridge/client/host-grpc-client"
 import { readTextFromClipboard, writeTextToClipboard } from "@/utils/env"
-import { FileContextTracker } from "./core/context/context-tracking/FileContextTracker"
+import type { ExtensionContext } from "vscode"
+import { initialize, tearDown } from "./common"
 import { sendFocusChatInputEvent } from "./core/controller/ui/subscribeToFocusChatInput"
 import { VscodeDiffViewProvider } from "./hosts/vscode/VscodeDiffViewProvider"
 import { VscodeWebviewProvider } from "./hosts/vscode/VscodeWebviewProvider"
 import { GitCommitGenerator } from "./integrations/git/commit-message-generator"
 import { AuthService } from "./services/auth/AuthService"
 import { telemetryService } from "./services/posthog/PostHogClientProvider"
-import { ShowMessageType } from "./shared/proto/host/window"
 import { SharedUriHandler } from "./services/uri/SharedUriHandler"
-import { getLatestAnnouncementId } from "./utils/announcements"
+import { ShowMessageType } from "./shared/proto/host/window"
 /*
 Built using https://github.com/microsoft/vscode-webview-ui-toolkit
 
@@ -51,30 +44,9 @@ https://github.com/microsoft/vscode-webview-ui-toolkit-samples/tree/main/framewo
 // This method is called when your extension is activated
 // Your extension is activated the very first time the command is executed
 export async function activate(context: vscode.ExtensionContext) {
-	maybeSetupHostProviders(context)
+	setupHostProvider(context)
 
-	// Initialize PostHog client provider
-	const distinctId = context.globalState.get<string>("cline.distinctId")
-	PostHogClientProvider.getInstance(distinctId)
-
-	Logger.log("Cline extension activated")
-
-	// Migrate custom instructions to global Cline rules (one-time cleanup)
-	await migrateCustomInstructionsToGlobalRules(context)
-
-	// Migrate welcomeViewCompleted setting based on existing API keys (one-time cleanup)
-	await migrateWelcomeViewCompleted(context)
-
-	// Migrate workspace storage values back to global storage (reverting previous migration)
-	await migrateWorkspaceToGlobalStorage(context)
-
-	// Clean up orphaned file context warnings (startup cleanup)
-	await FileContextTracker.cleanupOrphanedWarnings(context)
-
-	// Version checking for autoupdate notification
-	const currentVersion = context.extension.packageJSON.version
-	const previousVersion = context.globalState.get<string>("clineVersion")
-	const sidebarWebview = HostProvider.get().createWebviewProvider(WebviewProviderType.SIDEBAR)
+	const sidebarWebview = (await initialize(context)) as VscodeWebviewProvider
 
 	const testModeWatchers = await initializeTestMode(sidebarWebview)
 	// Initialize test mode and add disposables to context
@@ -88,37 +60,6 @@ export async function activate(context: vscode.ExtensionContext) {
 		}),
 	)
 
-	// Perform post-update actions if necessary
-	try {
-		if (!previousVersion || currentVersion !== previousVersion) {
-			Logger.log(`Cline version changed: ${previousVersion} -> ${currentVersion}. First run or update detected.`)
-
-			// Use the same condition as announcements: focus when there's a new announcement to show
-			const lastShownAnnouncementId = context.globalState.get<string>("lastShownAnnouncementId")
-			const latestAnnouncementId = getLatestAnnouncementId(context)
-
-			if (lastShownAnnouncementId !== latestAnnouncementId) {
-				// Focus Cline when there's a new announcement to show (major/minor updates or fresh installs)
-				const message = previousVersion
-					? `Cline has been updated to v${currentVersion}`
-					: `Welcome to Cline v${currentVersion}`
-				await vscode.commands.executeCommand("claude-dev.SidebarProvider.focus")
-				await new Promise((resolve) => setTimeout(resolve, 200))
-				HostProvider.window.showMessage({
-					type: ShowMessageType.INFORMATION,
-					message,
-				})
-			}
-			// Always update the main version tracker for the next launch.
-			await context.globalState.update("clineVersion", currentVersion)
-		}
-	} catch (error) {
-		const errorMessage = error instanceof Error ? error.message : String(error)
-		console.error(`Error during post-update actions: ${errorMessage}, Stack trace: ${error.stack}`)
-	}
-
-	telemetryService.captureExtensionActivated()
-
 	context.subscriptions.push(
 		vscode.commands.registerCommand("cline.plusButtonClicked", async (webview: any) => {
 			console.log("[DEBUG] plusButtonClicked", webview)
@@ -640,26 +581,21 @@ export async function activate(context: vscode.ExtensionContext) {
 	return createClineAPI(sidebarWebview.controller)
 }
 
-function maybeSetupHostProviders(context: ExtensionContext) {
-	if (!HostProvider.isInitialized()) {
-		console.log("Setting up vscode host providers...")
+function setupHostProvider(context: ExtensionContext) {
+	console.log("Setting up vscode host providers...")
 
-		const createWebview = (type: WebviewProviderType) => new VscodeWebviewProvider(context, type)
-		const createDiffView = () => new VscodeDiffViewProvider()
-		const outputChannel = vscode.window.createOutputChannel("Cline")
-		context.subscriptions.push(outputChannel)
+	const createWebview = (type: WebviewProviderType) => new VscodeWebviewProvider(context, type)
+	const createDiffView = () => new VscodeDiffViewProvider()
+	const outputChannel = vscode.window.createOutputChannel("Cline")
+	context.subscriptions.push(outputChannel)
 
-		const getCallbackUri = async () => `${vscode.env.uriScheme || "vscode"}://saoudrizwan.claude-dev`
-		HostProvider.initialize(createWebview, createDiffView, vscodeHostBridgeClient, outputChannel.appendLine, getCallbackUri)
-	}
+	const getCallbackUri = async () => `${vscode.env.uriScheme || "vscode"}://saoudrizwan.claude-dev`
+	HostProvider.initialize(createWebview, createDiffView, vscodeHostBridgeClient, outputChannel.appendLine, getCallbackUri)
 }
 
 // This method is called when your extension is deactivated
 export async function deactivate() {
-	PostHogClientProvider.getInstance().dispose()
-
-	// Dispose all webview instances
-	await WebviewProvider.disposeAllInstances()
+	tearDown()
 
 	// Clean up test mode
 	cleanupTestMode()

src/standalone/cline-core.ts

@@ -1,35 +1,29 @@
-import { activate } from "@/extension"
-import { Controller } from "@core/controller"
-import { CacheService } from "@core/storage/CacheService"
+import { initialize } from "@/common"
+import { WebviewProvider } from "@/core/webview"
+import { AuthHandler } from "@/hosts/external/AuthHandler"
+import { HostProvider } from "@/hosts/host-provider"
+import { DiffViewProvider } from "@/integrations/editor/DiffViewProvider"
 import { ExternalDiffViewProvider } from "@hosts/external/ExternalDiffviewProvider"
 import { ExternalWebviewProvider } from "@hosts/external/ExternalWebviewProvider"
 import { ExternalHostBridgeClientManager } from "@hosts/external/host-bridge-client-manager"
-import { HostProvider } from "@/hosts/host-provider"
 import { WebviewProviderType } from "@shared/webview/types"
-import { v4 as uuidv4 } from "uuid"
+import { startProtobusService } from "./protobus-service"
 import { log } from "./utils"
 import { extensionContext } from "./vscode-context"
-import { startProtobusService } from "./protobus-service"
-import { AuthHandler } from "@/hosts/external/AuthHandler"
-import { WebviewProvider } from "@/core/webview"
-import { DiffViewProvider } from "@/integrations/editor/DiffViewProvider"
 
 async function main() {
 	log("\n\n\nStarting cline-core service...\n\n\n")
 
-	AuthHandler.getInstance().setEnabled(true)
-
 	setupHostProvider()
 
 	// Set up global error handlers to prevent process crashes
 	setupGlobalErrorHandlers()
 
-	activate(extensionContext)
-	// Create and initialize cache service
+	const webviewProvider = await initialize(extensionContext)
 
-	// Create controller with cache service
-	const controller = new Controller(extensionContext, uuidv4())
-	startProtobusService(controller)
+	AuthHandler.getInstance().setEnabled(true)
+
+	startProtobusService(webviewProvider.controller)
 }
 
 function setupHostProvider() {