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.App/Resources/Colors.axaml

@@ -0,0 +1,26 @@
+<ResourceDictionary xmlns="https://github.com/avaloniaui"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
+  <Color x:Key="BrandRed">#E04A55</Color>
+  <Color x:Key="BrandRedDark">#B23640</Color>
+  <Color x:Key="BrandRedLight">#EC7A82</Color>
+  <Color x:Key="Ground">#1B141C</Color>
+  <Color x:Key="Surface">#2C222D</Color>
+  <Color x:Key="SurfaceRaised">#352A36</Color>
+  <Color x:Key="Line">#3A2E3B</Color>
+  <Color x:Key="TextStrong">#F0EAEF</Color>
+  <Color x:Key="TextSoft">#A79AA6</Color>
+  <Color x:Key="Good">#6FCF97</Color>
+  <Color x:Key="Caution">#F2C14E</Color>
+  <Color x:Key="Bad">#E85D6C</Color>
+
+  <SolidColorBrush x:Key="BrandRedBrush" Color="{StaticResource BrandRed}" />
+  <SolidColorBrush x:Key="GroundBrush" Color="{StaticResource Ground}" />
+  <SolidColorBrush x:Key="SurfaceBrush" Color="{StaticResource Surface}" />
+  <SolidColorBrush x:Key="SurfaceRaisedBrush" Color="{StaticResource SurfaceRaised}" />
+  <SolidColorBrush x:Key="LineBrush" Color="{StaticResource Line}" />
+  <SolidColorBrush x:Key="TextStrongBrush" Color="{StaticResource TextStrong}" />
+  <SolidColorBrush x:Key="TextSoftBrush" Color="{StaticResource TextSoft}" />
+  <SolidColorBrush x:Key="GoodBrush" Color="{StaticResource Good}" />
+  <SolidColorBrush x:Key="CautionBrush" Color="{StaticResource Caution}" />
+  <SolidColorBrush x:Key="BadBrush" Color="{StaticResource Bad}" />
+</ResourceDictionary>