Complete private authentication, server integrations and activity reporting

Add Fabric/Forge version builds and Paper integration, preserve permanent player identities across renames, harden session authorization, and surface privacy-conscious launcher/server activity in the panel.

panel/web/src/components/TokenReveal.svelte

@@ -22,7 +22,7 @@
 <ol class="steps">
   <li>
     <strong>Install the SCOPENET integration</strong>
-    <span class="muted small">The plugin for Paper, Purpur or Spigot, or the mod for Fabric and Forge servers.</span>
+    <span class="muted small">Use scopenet-paper for Paper, Purpur or Spigot. Fabric and Forge need the JAR for the exact Minecraft version: 1.20.1, 1.21.1, 26.1.2, 26.2 or 26.3.</span>
     <a class="dl" href="https://github.com/scopeddlol/SCOPENET-MC/releases/latest" target="_blank" rel="noreferrer"><Download size={14} /> Download from Releases</a>
   </li>
   <li>