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

deploy/meweb.service

@@ -0,0 +1,24 @@
+[Unit]
+Description=me-web? server (meweb.arasaka.software)
+After=network-online.target mongod.service
+Wants=network-online.target
+
+[Service]
+User=meweb
+Group=meweb
+WorkingDirectory=/var/www/meweb.arasaka.software
+ExecStart=/var/www/meweb.arasaka.software/MeWeb.Server
+EnvironmentFile=/etc/meweb/meweb.env
+Restart=always
+RestartSec=5
+KillSignal=SIGINT
+SyslogIdentifier=meweb
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectSystem=strict
+ProtectHome=true
+ReadOnlyPaths=/var/www/meweb.arasaka.software
+MemoryMax=512M
+
+[Install]
+WantedBy=multi-user.target