Add local Whisper speech input

package.json

@@ -8,7 +8,8 @@
     "ios": "expo start --ios",
     "web": "expo start --web",
     "prebuild:ios": "expo prebuild --platform ios",
-    "tts:start": "node tools/tts-server.mjs"
+    "tts:start": "node tools/tts-server.mjs",
+    "stt:start": "node tools/stt-server.mjs"
   },
   "dependencies": {
     "@react-navigation/native": "^7.2.2",
@@ -19,6 +20,8 @@
     "expo-status-bar": "~3.0.9",
     "express": "^5.2.1",
     "msedge-tts": "^2.0.5",
+    "multer": "^2.1.1",
+    "nodejs-whisper": "^0.3.0",
     "react": "19.1.0",
     "react-native": "0.81.5",
     "react-native-safe-area-context": "~5.6.0",