initial commit: reforgermods.net launcher 0.1.0

A desktop server browser for Arma Reforger, built on the reforgermods.net v2
API. Live server list with search, sort and filters; a detail inspector with
population history and mod readiness; measured ICMP latency; favorites, recents
and settings; and direct joining through Steam.

Tauri 2 and Rust, with a Preact frontend that builds to 80 KB of JavaScript in
one chunk. Logic lives in rfm-core, which has no Tauri dependency and is tested
directly; src-tauri is the window, the command surface and the wiring.

Packaged for the public beta: a per-user NSIS installer, a portable .exe and an
Arch package, with signature-verified background updates on Windows and a
release pipeline that builds from a tag. The artifacts are not yet
Authenticode-signed — that is wired and waiting on an Azure Trusted Signing
identity, and docs/distribution.md says so plainly rather than letting anyone
discover it at the SmartScreen dialog.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

src-tauri/capabilities/main.json

@@ -0,0 +1,13 @@
+{
+  "$schema": "../gen/schemas/desktop-schema.json",
+  "identifier": "main",
+  "description": "Minimum permissions for the launcher window. The window is frameless, so the UI may drag it and operate its own caption buttons — and nothing else. The UI may only invoke this app's own commands; it is granted no filesystem, shell, HTTP or opener access. URIs are opened from Rust, after the server id has been validated.",
+  "windows": ["main"],
+  "permissions": [
+    "core:default",
+    "core:window:allow-start-dragging",
+    "core:window:allow-minimize",
+    "core:window:allow-toggle-maximize",
+    "core:window:allow-close"
+  ]
+}