Initialize Fonrey Django multi-tenant project skeleton

Set up the required directory layout, app scaffolding, core settings, templates, static assets, and Docker/Tailwind tooling to establish a standardized development baseline.

templates/components/sidebar.html

@@ -0,0 +1,7 @@
+<nav class="px-2" hx-get="/permission/" hx-trigger="load" hx-target="#sidebar-async" hx-swap="innerHTML">
+  <ul class="space-y-1">
+    <li><a href="#" class="block px-3 py-2 rounded hover:bg-neutral-100">总览</a></li>
+    <li><a href="#" class="block px-3 py-2 rounded hover:bg-neutral-100">我的任务</a></li>
+  </ul>
+  <div id="sidebar-async"></div>
+</nav>