refactor: cleanup template and add new pages

- Remove unused template files (frontend-code-interpreter, template-renderer)
- Add home, test1, test2, zh-en-translator pages
- Update router configuration
- Add Docker and tailwind config
- Update environment files and configuration

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/index.css

@@ -0,0 +1,29 @@
+@import 'tailwindcss';
+
+.route-loading {
+  position: fixed;
+  top: 50%;
+  left: 50%;
+  width: 120px;
+  height: 22px;
+  color: #514b82;
+  border: 2px solid;
+  border-radius: 20px;
+  transform: translate(-50%, -50%);
+}
+
+@keyframes l6 {
+  100% {
+    inset: 0;
+  }
+}
+
+.route-loading::before {
+  position: absolute;
+  inset: 0 100% 0 0;
+  margin: 2px;
+  content: '';
+  background: currentcolor;
+  border-radius: inherit;
+  animation: l6 2s infinite;
+}