feat(web): refactor MCP servers as sidebar entities and improve sidebar footer

- Refactor MCP servers to be managed as collapsible sidebar sub-items with
  ?id= detail routing and inline form (matching bots/pipelines pattern)
- Add MCPDetailContent with create/edit modes, enable toggle, and danger zone
- Extract MCPForm as standalone inline form from MCPFormDialog
- Move API Integration to standalone sidebar footer button
- Add GitHub star CTA with live star count badge in user dropdown menu
- Add MCP server status dot indicators in sidebar (green/gray for enabled/disabled)
- Add i18n keys for MCP detail page and GitHub star CTA in all 4 locales

web/src/app/global.css

@@ -114,6 +114,7 @@
   --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
   --color-sidebar-border: var(--sidebar-border);
   --color-sidebar-ring: var(--sidebar-ring);
+  --animate-twinkle: twinkle 1.5s ease-in-out infinite;
 }
 
 .dark {
@@ -158,3 +159,23 @@
     @apply bg-background text-foreground;
   }
 }
+
+@keyframes twinkle {
+  0%,
+  100% {
+    opacity: 1;
+    transform: scale(1) rotate(0deg);
+  }
+  25% {
+    opacity: 0.6;
+    transform: scale(0.85) rotate(-8deg);
+  }
+  50% {
+    opacity: 1;
+    transform: scale(1.15) rotate(4deg);
+  }
+  75% {
+    opacity: 0.7;
+    transform: scale(0.95) rotate(-4deg);
+  }
+}