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.Shared/Endpoints.cs

@@ -0,0 +1,27 @@
+namespace MeWeb.Shared;
+
+public static class Endpoints
+{
+  public const string Host = "meweb.arasaka.software";
+  public const string HostV4 = "v4.meweb.arasaka.software";
+  public const string HostV6 = "v6.meweb.arasaka.software";
+
+  public static string Base => $"https://{Host}";
+  public static string BaseV4 => $"https://{HostV4}";
+  public static string BaseV6 => $"https://{HostV6}";
+
+  public const string Api = "/api";
+
+  public static class Server
+  {
+    public const string GET_Info = $"{Api}/info";
+    public const string GET_Ip = $"{Api}/ip";
+  }
+
+  public static class Downloads
+  {
+    public const string GET_Platform = "/download/{platform}";
+
+    public static string GET_M_Platform(string platform) => $"/download/{platform}";
+  }
+}