chore: migrate personal reference pages to private notes

Removes templates, music, AI prompts, server setup, and VTubing setup
from the public docs site. These pages have been migrated to Naomi's
private SilverBullet notes instance where they belong.

The server setup doc has been rewritten as a personal runbook rather
than staff-facing documentation.

src/components/navigation.ts

@@ -180,14 +180,6 @@ export const navigation = [
         label: "Development Environment",
         link: "/dev/environment",
       },
-      {
-        label: "Server Setup",
-        link: "/dev/servers",
-      },
-      {
-        label: "Naomi's VTubing Setup",
-        link: "/dev/vtubing",
-      },
       {
         label: "Security Hall of Fame",
         link: "/dev/hall-of-fame",
@@ -857,26 +849,6 @@ export const navigation = [
     ].sort((a, b) => a.label.localeCompare(b.label)),
   },
   // #endregion
-  // #region Miscellaneous Documents
-  {
-    label: "Miscellaneous Documents",
-    collapsed: true,
-    items: [
-      {
-        label: "Managing Local Music",
-        link: "/misc/music",
-      },
-      {
-        label: "Templates",
-        link: "/misc/templates",
-      },
-      {
-        label: "AI Prompts",
-        link: "/misc/prompts",
-      }
-    ].sort((a, b) => a.label.localeCompare(b.label)),
-  },
-  // #endregion
   // #region External Links
   {
     label: "Discord",