Add extension mode context

packages/coding-agent/src/modes/interactive/interactive-mode.ts

@@ -1508,6 +1508,7 @@ export class InteractiveMode {
 		const uiContext = this.createExtensionUIContext();
 		await this.session.bindExtensions({
 			uiContext,
+			mode: "tui",
 			abortHandler: () => {
 				this.restoreQueuedMessagesToEditor({ abort: true });
 			},
@@ -1654,6 +1655,7 @@ export class InteractiveMode {
 		// Create a context for shortcut handlers
 		const createContext = (): ExtensionContext => ({
 			ui: this.createExtensionUIContext(),
+			mode: "tui",
 			hasUI: true,
 			cwd: this.sessionManager.getCwd(),
 			sessionManager: this.sessionManager,