Docs: full Vantage 3D map setup guide; fully commented Paper example config

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DjMbLQujBHunCCu5GpsHaT

panel/web/src/components/LiveMapPanel.svelte

@@ -130,7 +130,7 @@
     {#if !status.generator.installed || !status.assets.configured}
       <p class="hint-box small">
         The panel stores what the server sends, but rendering needs the Vantage generator and Minecraft client assets.
-        Install them as described in <code>docs/live-map.md</code> — until then launchers show a “map is being set up” message.
+        Install them as described in <code>docs/vantage-setup.md</code> — until then launchers show a “map is being set up” message.
       </p>
     {/if}
     {#if status.last_error}<p class="err small">Generator: {status.last_error}</p>{/if}