feat: separate data classification architecture

- Create separate scanner interfaces for storage, system, and docker data
- Add dedicated endpoints for metrics and docker images instead of misclassifying as updates
- Implement proper database tables for storage metrics and docker images
- Fix storage/system metrics appearing incorrectly as package updates
- Add scanner types with proper data structures for each subsystem
- Update agent handlers to use correct endpoints for each data type

aggregator-web/src/pages/TokenManagement.tsx

@@ -96,7 +96,11 @@ const TokenManagement: React.FC = () => {
   };
 
   const getServerUrl = () => {
-    return `${window.location.protocol}//${window.location.host}`;
+    // Use API server port (8080) instead of web UI port (3000)
+    const protocol = window.location.protocol;
+    const hostname = window.location.hostname;
+    const port = hostname === 'localhost' || hostname === '127.0.0.1' ? ':8080' : '';
+    return `${protocol}//${hostname}${port}`;
   };
 
   const copyToClipboard = async (text: string) => {

aggregator-web/src/pages/settings/AgentManagement.tsx

@@ -48,7 +48,11 @@ const AgentManagement: React.FC = () => {
   ];
 
   const getServerUrl = () => {
-    return `${window.location.protocol}//${window.location.host}`;
+    // Use API server port (8080) instead of web UI port (3000)
+    const protocol = window.location.protocol;
+    const hostname = window.location.hostname;
+    const port = hostname === 'localhost' || hostname === '127.0.0.1' ? ':8080' : '';
+    return `${protocol}//${hostname}${port}`;
   };
 
   const getActiveToken = () => {