Remove unrelated changes and PWA support from mobile PR

- Revert copilot package-lock.json to main (unrelated npm artifact)
- Revert agentHost remoteAgentHostProtocolClient.ts (diffs field not mobile-related)
- Revert agentHost sessionTransport.ts (protocol cleanup not mobile-related)
- Remove theme-color meta element creation and dynamic updates (PWA)
- Remove apple-touch-startup-image link injection (PWA)
- Remove PWA & Viewport section from MOBILE.md
- Keep viewport-fit=cover as it is needed for safe-area-inset CSS on mobile

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: osortega

extensions/copilot/package-lock.json

@@ -270,7 +270,6 @@ export class RemoteAgentHostProtocolClient extends Disposable implements IAgentC
 			workingDirectory: typeof s.workingDirectory === 'string' ? toAgentHostUri(URI.parse(s.workingDirectory), this._connectionAuthority) : undefined,
 			isRead: s.isRead,
 			isDone: s.isDone,
-			diffs: s.diffs,
 		}));
 	}
 

src/vs/platform/agentHost/browser/remoteAgentHostProtocolClient.ts

@@ -12,7 +12,7 @@
 
 import { Event } from '../../../../base/common/event.js';
 import { IDisposable } from '../../../../base/common/lifecycle.js';
-import type { IProtocolMessage, IAhpServerNotification, IJsonRpcResponse, IJsonRpcRequest } from './sessionProtocol.js';
+import type { IProtocolMessage, IAhpServerNotification, IJsonRpcNotification, IJsonRpcResponse, IJsonRpcRequest } from './sessionProtocol.js';
 
 /**
  * A bidirectional transport for protocol messages. Implementations handle
@@ -33,7 +33,7 @@ export interface IProtocolTransport extends IDisposable {
 	 * - `IAhpServerNotification` — server→client notifications.
 	 * - `IJsonRpcResponse` — dynamically-constructed success/error responses.
 	 */
-	send(message: IProtocolMessage | IAhpServerNotification | IJsonRpcResponse | IJsonRpcRequest): void;
+	send(message: IProtocolMessage | IAhpServerNotification | IJsonRpcNotification | IJsonRpcResponse | IJsonRpcRequest): void;
 }
 
 /**

src/vs/platform/agentHost/common/state/sessionTransport.ts

@@ -141,13 +141,6 @@ The workbench toggles CSS classes (`phone-layout`, `mobile-layout`) on `layout()
 | `src/vs/sessions/browser/parts/media/sidebarPart.css` | Sidebar drawer overlay CSS: 85% width, z-index 250, slide-in animation, backdrop. |
 | `src/vs/sessions/browser/media/style.css` | Mobile overscroll containment, 44px touch targets, quick pick bottom sheets, context menu action sheets, dialog sizing, notification positioning, hover card suppression, editor modal full-screen. |
 
-### PWA & Viewport
-
-| File | Purpose |
-|------|---------|
-| `src/vs/code/browser/workbench/workbench.html` | `viewport-fit=cover` meta tag, `theme-color` meta tag. |
-| `resources/server/manifest.json` | PWA manifest: `background_color`, `theme_color`, `orientation`. |
-
 ## Remaining Work
 
 - **Session title sync**: MobileTopBar shows hardcoded "New Session" — needs to subscribe to `sessionsManagementService.activeSession` and update title when session changes.

src/vs/sessions/MOBILE.md

@@ -209,8 +209,6 @@ export class Workbench extends Disposable implements IAgentWorkbenchLayoutServic
 	private _mainContainerDimension!: IDimension;
 	get mainContainerDimension(): IDimension { return this._mainContainerDimension; }
 
-	private readonly _themeColorMeta: HTMLMetaElement;
-
 	get activeContainerDimension(): IDimension {
 		return this.getContainerDimension(this.activeContainer);
 	}
@@ -302,27 +300,14 @@ export class Workbench extends Disposable implements IAgentWorkbenchLayoutServic
 	) {
 		super();
 
-		// Cache the theme-color meta element for dynamic updates
-		const themeColorMeta = mainWindow.document.createElement('meta');
-		themeColorMeta.name = 'theme-color';
-		themeColorMeta.content = '#1e1e1e';
-		mainWindow.document.head.appendChild(themeColorMeta);
-		this._themeColorMeta = themeColorMeta;
-
-		// Sessions-scoped mobile/PWA viewport tweaks. These are applied here
+		// Sessions-scoped mobile viewport tweaks. These are applied here
 		// (rather than in the shared workbench.html) so that the regular
 		// code-web workbench — which does not handle safe-area insets — is
 		// not affected on notched mobile devices.
 		const viewportMeta = mainWindow.document.querySelector<HTMLMetaElement>('meta[name="viewport"]');
 		if (viewportMeta && !viewportMeta.content.includes('viewport-fit=')) {
 			viewportMeta.content = `${viewportMeta.content}, viewport-fit=cover`;
 		}
-		if (!mainWindow.document.querySelector('link[rel="apple-touch-startup-image"]')) {
-			const startupImage = mainWindow.document.createElement('link');
-			startupImage.rel = 'apple-touch-startup-image';
-			startupImage.href = `${mainWindow.document.baseURI}favicon.ico`;
-			mainWindow.document.head.appendChild(startupImage);
-		}
 
 		// Perf: measure workbench startup time
 		mark('code/willStartWorkbench');
@@ -1236,16 +1221,6 @@ export class Workbench extends Disposable implements IAgentWorkbenchLayoutServic
 
 		// Emit as event
 		this.handleContainerDidLayout(this.mainContainer, this._mainContainerDimension);
-
-		// Update mobile status bar theme color to match current theme
-		this.updateThemeColor();
-	}
-
-	private updateThemeColor(): void {
-		const bgColor = mainWindow.getComputedStyle(this.mainContainer).backgroundColor;
-		if (bgColor && bgColor !== 'rgba(0, 0, 0, 0)') {
-			this._themeColorMeta.content = bgColor;
-		}
 	}
 
 	private layoutMobileSidebar(): void {