feat: add Android Jetpack Compose app

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Android/app/src/main/res/values/colors.xml

@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="black">#FF000000</color>
+    <color name="white">#FFFFFFFF</color>
+    <color name="bitcoin_orange">#FFF7931A</color>
+    <color name="surface_dark">#FF0A0A0A</color>
+    <color name="surface_card">#FF1A1A1A</color>
+    <color name="splash_background">#FF000000</color>
+</resources>

Android/app/src/main/res/values/strings.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <string name="app_name">Archipelago</string>
+    <string name="server_address_label">Server Address</string>
+    <string name="server_address_placeholder">192.168.1.100</string>
+    <string name="server_address_hint">Enter your Archipelago server IP or hostname</string>
+    <string name="connect">Connect</string>
+    <string name="connecting">Connecting…</string>
+    <string name="connection_failed">Could not reach server. Check the address and try again.</string>
+    <string name="connection_timeout">Connection timed out. Is the server running?</string>
+    <string name="welcome_title">Your Sovereign\nPersonal Server</string>
+    <string name="welcome_subtitle">Bitcoin node, app platform, and private cloud — all in one box you control.</string>
+    <string name="get_started">Get Started</string>
+    <string name="use_https">Use HTTPS</string>
+    <string name="port_label">Port (optional)</string>
+    <string name="saved_servers">Saved Servers</string>
+    <string name="no_saved_servers">No saved servers yet</string>
+    <string name="remove_server">Remove</string>
+    <string name="disconnect">Disconnect</string>
+    <string name="server_unreachable">Server unreachable</string>
+    <string name="retry">Retry</string>
+</resources>

Android/app/src/main/res/values/themes.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <style name="Theme.Archipelago" parent="android:Theme.Material.NoActionBar">
+        <item name="android:statusBarColor">@android:color/transparent</item>
+        <item name="android:navigationBarColor">@android:color/transparent</item>
+        <item name="android:windowBackground">@color/black</item>
+    </style>
+
+    <style name="Theme.Archipelago.Splash" parent="Theme.SplashScreen">
+        <item name="windowSplashScreenBackground">@color/splash_background</item>
+        <item name="windowSplashScreenAnimatedIcon">@drawable/ic_splash_logo</item>
+        <item name="postSplashScreenTheme">@style/Theme.Archipelago</item>
+    </style>
+</resources>