Dashboard Studio 2.0.0: Admin, Builder and Dashboard screens, roles, Haven

- Home Assistant administrators are admins: Dashboard, Builder and Admin screens
- Everyone else only sees the dashboards an admin chose, always in kiosk mode;
  the server enforces it (saving, people, devices, history are admin-only, and
  the websocket only allows reading states and controlling devices)
- Admin screen: dashboards, people and what each sees (with preview), devices,
  messages to the screens, the Haven app, activity, about
- Haven: new Android app (haven/) that only shows dashboards; replaces the
  Dashboard Studio Android app and signs in through Home Assistant's page
- Screens pick up dashboard and access changes within a minute
- Version history records who made each change; panel visible to all users

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

haven/AndroidManifest.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="nl.melvanveen.haven"
+    android:versionCode="1"
+    android:versionName="2.0.0">
+
+    <uses-sdk android:minSdkVersion="24" android:targetSdkVersion="34" />
+    <uses-permission android:name="android.permission.INTERNET" />
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.VIBRATE" />
+
+    <application
+        android:label="@string/app_name"
+        android:icon="@mipmap/ic_launcher"
+        android:theme="@style/AppTheme"
+        android:usesCleartextTraffic="true"
+        android:allowBackup="true">
+        <activity
+            android:name=".MainActivity"
+            android:exported="true"
+            android:launchMode="singleTask"
+            android:configChanges="orientation|screenSize|screenLayout|smallestScreenSize|keyboardHidden|uiMode|density"
+            android:windowSoftInputMode="adjustResize">
+            <intent-filter>
+                <action android:name="android.intent.action.MAIN" />
+                <category android:name="android.intent.category.LAUNCHER" />
+            </intent-filter>
+            <!-- "Open in Haven" in Dashboard Studio: haven://open?url=<the address of Dashboard Studio> -->
+            <intent-filter>
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT" />
+                <category android:name="android.intent.category.BROWSABLE" />
+                <data android:scheme="haven" android:host="open" />
+            </intent-filter>
+        </activity>
+    </application>
+</manifest>