fix(frontend): projet Android complet (embedding v2) pour build web Docker

- Régénération android/ (MainActivity, Gradle, manifestes, icônes)
- gradle-wrapper.jar versionné (wrapper requis hors machine locale)
- Ignore local.properties à la racine du dépôt
- pubspec.lock / .metadata alignés Flutter 3.19 (résolution pub get CI)

Made-with: Cursor

frontend/android/app/src/main/AndroidManifest.xml

@@ -1,3 +1,8 @@
+<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+    <application
+        android:label="p_tits_pas"
+        android:name="${applicationName}"
+        android:icon="@mipmap/ic_launcher">
         <activity
             android:name=".MainActivity"
             android:exported="true"
@@ -19,14 +24,21 @@
                 <category android:name="android.intent.category.LAUNCHER"/>
             </intent-filter>
         </activity>
+        <!-- Don't delete the meta-data below.
+             This is used by the Flutter tool to generate GeneratedPluginRegistrant.java -->
+        <meta-data
+            android:name="flutterEmbedding"
+            android:value="2" />
+    </application>
+    <!-- Required to query activities that can process text, see:
+         https://developer.android.com/training/package-visibility?hl=en and
+         https://developer.android.com/reference/android/content/Intent#ACTION_PROCESS_TEXT.
 
-        <!-- Suppression de l'activité pour image_cropper -->
-        <!-- 
-        <activity
-            android:name="com.yalantis.ucrop.UCropActivity"
-            android:screenOrientation="portrait"
-            android:theme="@style/Theme.AppCompat.Light.NoActionBar"/>
-        -->
-        
-        <!-- Don't delete the meta-data below. -->
-        <meta-data 
+         In particular, this is used by the Flutter engine in io.flutter.plugin.text.ProcessTextPlugin. -->
+    <queries>
+        <intent>
+            <action android:name="android.intent.action.PROCESS_TEXT"/>
+            <data android:mimeType="text/plain"/>
+        </intent>
+    </queries>
+</manifest>