feat(voice-call): Implement direct voice call launch from assistant

android/app/src/main/kotlin/app/cogwheel/conduit/ConduitVoiceInteractionSession.kt

@@ -34,11 +34,10 @@ class ConduitVoiceInteractionSession(context: Context) : VoiceInteractionSession
             launchApp()
         }
 
-        // Voice button
+        // Voice button - opens voice call directly
         val voiceButton = view.findViewById<android.view.View>(app.cogwheel.conduit.R.id.btn_voice)
         voiceButton?.setOnClickListener {
-            // TODO: Implement voice input functionality
+            launchAppForVoiceCall()
-            launchAppWithContext(includeScreenshot = false)
         }
 
         return view
@@ -158,13 +157,32 @@ class ConduitVoiceInteractionSession(context: Context) : VoiceInteractionSession
         }
     }
 
+    private fun launchAppForVoiceCall() {
+        try {
+            android.util.Log.d("ConduitVoiceSession", "Attempting to launch app for voice call")
+            val intent = Intent(context, MainActivity::class.java)
+            intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+            intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP)
+            intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)
+
+            intent.putExtra("start_voice_call", true)
+            android.util.Log.d("ConduitVoiceSession", "Voice call flag attached")
+
+            context.startActivity(intent)
+            android.util.Log.d("ConduitVoiceSession", "App launch requested for voice call")
+            finish() // Close the overlay
+        } catch (e: Exception) {
+            android.util.Log.e("ConduitVoiceSession", "Failed to launch app for voice call", e)
+        }
+    }
+
     private fun traverseNode(node: AssistStructure.ViewNode?, builder: StringBuilder) {
         if (node == null) return
 
         if (node.text != null) {
             builder.append(node.text).append("\n")
         }
-        
+
         // Also check content description for accessibility text
         if (node.contentDescription != null) {
              builder.append(node.contentDescription).append("\n")

android/app/src/main/kotlin/app/cogwheel/conduit/MainActivity.kt

@@ -50,12 +50,17 @@ class MainActivity : FlutterActivity() {
 
         val screenContext = intent.getStringExtra("screen_context")
         val screenshotPath = intent.getStringExtra("screenshot_path")
+        val startVoiceCall = intent.getBooleanExtra("start_voice_call", false)
 
         android.util.Log.d("MainActivity", "screenContext: $screenContext")
         android.util.Log.d("MainActivity", "screenshotPath: $screenshotPath")
+        android.util.Log.d("MainActivity", "startVoiceCall: $startVoiceCall")
         android.util.Log.d("MainActivity", "methodChannel: $methodChannel")
 
-        if (screenContext != null) {
+        if (startVoiceCall) {
+            android.util.Log.d("MainActivity", "Invoking startVoiceCall")
+            methodChannel?.invokeMethod("startVoiceCall", null)
+        } else if (screenContext != null) {
             android.util.Log.d("MainActivity", "Invoking analyzeScreen")
             methodChannel?.invokeMethod("analyzeScreen", screenContext)
         } else if (screenshotPath != null) {

lib/core/utils/android_assistant_handler.dart

@@ -1,9 +1,11 @@
 import 'dart:io';
+import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
 import 'package:path/path.dart' as path;
 import '../../features/chat/providers/chat_providers.dart';
 import '../../features/chat/services/file_attachment_service.dart';
+import '../../features/chat/views/voice_call_page.dart';
 import '../services/navigation_service.dart';
 import '../../shared/services/tasks/task_queue.dart';
 import '../providers/app_providers.dart';
@@ -42,6 +44,8 @@ class AndroidAssistantHandler {
     } else if (call.method == 'analyzeScreenshot') {
       final String screenshotPath = call.arguments as String;
       await _processScreenshot(screenshotPath);
+    } else if (call.method == 'startVoiceCall') {
+      await _startVoiceCall();
     }
   }
 
@@ -102,4 +106,45 @@ class AndroidAssistantHandler {
       DebugLogger.log('Failed to process screenshot: $e', scope: 'assistant');
     }
   }
+
+  Future<void> _startVoiceCall() async {
+    try {
+      DebugLogger.log('Starting voice call from assistant', scope: 'assistant');
+
+      // Wait for app to be ready (authenticated and model available)
+      final navState = _ref.read(authNavigationStateProvider);
+      final model = _ref.read(selectedModelProvider);
+
+      if (navState != AuthNavigationState.authenticated || model == null) {
+        DebugLogger.log('App not ready for voice call', scope: 'assistant');
+        return;
+      }
+
+      // Navigate to chat if not already there
+      final isOnChatRoute = NavigationService.currentRoute == Routes.chat;
+      if (!isOnChatRoute) {
+        // Navigation will happen via auth state
+        return;
+      }
+
+      // Get the current BuildContext from the navigation service
+      final context = NavigationService.navigatorKey.currentContext;
+      if (context == null) {
+        DebugLogger.log('No context available for voice call navigation', scope: 'assistant');
+        return;
+      }
+
+      // Navigate to voice call page
+      await Navigator.of(context).push(
+        MaterialPageRoute(
+          builder: (context) => const VoiceCallPage(),
+          fullscreenDialog: true,
+        ),
+      );
+
+      DebugLogger.log('Voice call page launched', scope: 'assistant');
+    } catch (e) {
+      DebugLogger.log('Failed to start voice call: $e', scope: 'assistant');
+    }
+  }
 }