Fix frontend build OOM: skip tsc, use vite only, bump memory limits

- Replace `npm run build` (tsc -b && vite build) with `npx vite build`
  in Dockerfile since Vite transpiles via SWC independently of tsc.
  Type-checking is already done in the test step.
- Set Node heap to 1024MB (was 384MB which OOMed even for Vite)
- Bump Drone pod memory: requests 1.5Gi, limits 3Gi to cover
  plugins/docker overhead

.drone.yml

@@ -25,9 +25,9 @@ steps:
     image: plugins/docker
     resources:
       requests:
-        memory: 1073741824
+        memory: 1610612736
       limits:
-        memory: 2147483648
+        memory: 3221225472
     settings:
       username: viktorbarzin
       password:
@@ -45,9 +45,9 @@ steps:
     image: plugins/docker
     resources:
       requests:
-        memory: 1073741824
+        memory: 1610612736
       limits:
-        memory: 2147483648
+        memory: 3221225472
     settings:
       username: viktorbarzin
       password: