feat: agent version badges, SHIFT path config and video search per system

- revert vite port to 4173 to match the Synology reverse-proxy upstream
- show agent version chip on each system card (or "legacy")
- SHIFT folder path editor per node, saved to backend
- search videos in a node's SHIFT folder by date/name, fetch from results

vite.config.js

@@ -6,7 +6,7 @@ export default defineConfig({
   plugins: [react()],
   server: {
     host: '0.0.0.0',
-    port: 6173,
+    port: 4173,
     allowedHosts: ["rmm.seekright.com"]
   },
 })