fix(proxy): add /backend proxy with rewrite to replace legacy per-route entries

frontend/vite.config.ts

@@ -7,34 +7,13 @@ export default defineConfig({
     host: '0.0.0.0',
     port: 5173,
     proxy: {
-      '/auth': {
+      // All backend API calls go through /backend -> strips prefix
-        target: 'http://127.0.0.1:8000',
+      '/backend': {
-        changeOrigin: true,
-      },  
-      '/inventory': {
-        target: 'http://127.0.0.1:8000',
-        changeOrigin: true,
-      },
-      '/objects': {
-        target: 'http://127.0.0.1:8000',
-        changeOrigin: true,
-      },
-      '/jobs': {
-        target: 'http://127.0.0.1:8000',
-        changeOrigin: true,
-      },
-      '/discoveries': {
-        target: 'http://127.0.0.1:8000',
-        changeOrigin: true,
-      },
-      '/relations': {
-        target: 'http://127.0.0.1:8000',
-        changeOrigin: true,
-      },
-      '/health': {
         target: 'http://127.0.0.1:8000',
         changeOrigin: true,
+        rewrite: (path) => path.replace(/^\/backend/, ''),
       },
+      // Local agent (unauthenticated)
       '/api': {
         target: 'http://127.0.0.1:8001',
         changeOrigin: true,