me-web? skeleton: Avalonia 12 app, server, packaging and CI

The first screen (online or not, a Check button, every language with a
draft notice), the desktop and Android heads, the server's /api/info and
/api/ip, a release tool that builds deb, rpm, a Windows exe, macOS zips,
a signed APK and the server, and the Gitea workflows that run it. Rules
adapted from passolo; AGPL-3.0.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012CzABvBkbcFqoHdmi8b9WB

src/MeWeb.Android/MainActivity.cs

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+using Android.App;
+using Android.Content.PM;
+
+using Avalonia.Android;
+
+namespace MeWeb.Android;
+
+[Activity(
+    Label = "me-web?",
+    Theme = "@style/MeWebTheme.NoActionBar",
+    Icon = "@drawable/icon",
+    MainLauncher = true,
+    ConfigurationChanges = ConfigChanges.Orientation | ConfigChanges.ScreenSize | ConfigChanges.UiMode | ConfigChanges.Locale | ConfigChanges.LayoutDirection)]
+public class MainActivity : AvaloniaMainActivity
+{
+}

src/MeWeb.Android/MainApplication.cs

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+using Android.App;
+using Android.Runtime;
+
+using Avalonia;
+using Avalonia.Android;
+
+namespace MeWeb.Android;
+
+[Application]
+public class MainApplication : AvaloniaAndroidApplication<MeWeb.App.App>
+{
+  protected MainApplication(nint javaReference, JniHandleOwnership transfer) : base(javaReference, transfer)
+  {
+  }
+
+  protected override AppBuilder CustomizeAppBuilder(AppBuilder builder) => base.CustomizeAppBuilder(builder).WithInterFont();
+}

src/MeWeb.Android/MeWeb.Android.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net10.0-android</TargetFramework>
+    <SupportedOSPlatformVersion>24</SupportedOSPlatformVersion>
+    <RootNamespace>MeWeb.Android</RootNamespace>
+    <ApplicationId>software.arasaka.meweb</ApplicationId>
+    <ApplicationTitle>me-web?</ApplicationTitle>
+    <ApplicationDisplayVersion>$(Version)</ApplicationDisplayVersion>
+    <VersionMajor>$([System.Version]::Parse('$(Version)').Major)</VersionMajor>
+    <VersionMinor>$([System.Version]::Parse('$(Version)').Minor)</VersionMinor>
+    <VersionPatch>$([System.Version]::Parse('$(Version)').Build)</VersionPatch>
+    <ApplicationVersion>$([MSBuild]::Add($([MSBuild]::Multiply($(VersionMajor), 10000)), $([MSBuild]::Add($([MSBuild]::Multiply($(VersionMinor), 100)), $(VersionPatch)))))</ApplicationVersion>
+    <AndroidPackageFormats>apk</AndroidPackageFormats>
+    <AndroidEnableProfiledAot>false</AndroidEnableProfiledAot>
+    <JsonSerializerIsReflectionEnabledByDefault>false</JsonSerializerIsReflectionEnabledByDefault>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Avalonia.Android" />
+    <PackageReference Include="Xamarin.AndroidX.Core.SplashScreen" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\MeWeb.App\MeWeb.App.csproj" />
+  </ItemGroup>
+</Project>

src/MeWeb.Android/Properties/AndroidManifest.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:installLocation="auto">
+  <uses-permission android:name="android.permission.INTERNET" />
+  <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+  <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+  <uses-permission android:name="android.permission.CHANGE_WIFI_MULTICAST_STATE" />
+  <application android:label="me-web?" android:icon="@drawable/icon" android:supportsRtl="true" />
+</manifest>

src/MeWeb.Android/Resources/drawable/splash_screen.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
+  <item>
+    <color android:color="@color/splash_background" />
+  </item>
+  <item android:drawable="@drawable/icon" android:width="120dp" android:height="120dp" android:gravity="center" />
+</layer-list>

src/MeWeb.Android/Resources/values-v31/styles.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <style name="MeWebTheme" />
+  <style name="MeWebTheme.NoActionBar" parent="@style/Theme.AppCompat.NoActionBar">
+    <item name="android:windowActionBar">false</item>
+    <item name="android:windowBackground">@null</item>
+    <item name="android:windowNoTitle">true</item>
+    <item name="android:windowSplashScreenBackground">@color/splash_background</item>
+    <item name="android:windowSplashScreenAnimatedIcon">@drawable/icon</item>
+    <item name="postSplashScreenTheme">@style/MeWebTheme.Main</item>
+  </style>
+  <style name="MeWebTheme.Main" parent="MeWebTheme.NoActionBar">
+    <item name="android:windowIsTranslucent">true</item>
+  </style>
+</resources>

src/MeWeb.Android/Resources/values/colors.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <color name="splash_background">#1B141C</color>
+</resources>

src/MeWeb.Android/Resources/values/styles.xml

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+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <style name="MeWebTheme" />
+  <style name="MeWebTheme.NoActionBar" parent="@style/Theme.AppCompat.NoActionBar">
+    <item name="android:windowActionBar">false</item>
+    <item name="android:windowBackground">@drawable/splash_screen</item>
+    <item name="android:windowNoTitle">true</item>
+  </style>
+</resources>