fix: update Dockerfile and Vite config to use correct webui/dist path

The build process was failing because the Dockerfile was copying from
the wrong source path and the Vite configuration was outputting to
the wrong directory. Updated both to use the correct
backend/webui/dist path structure.

Author: umesok

Dockerfile

@@ -36,7 +36,7 @@ RUN yzma lib get || true
 RUN mkdir -p /app/lib
 
 # Copy built UI assets from ui-builder stage
-COPY --from=ui-builder /app/webui/dist ./webui/dist
+COPY --from=ui-builder /app/backend/webui/dist ./webui/dist
 
 # Build the application using Makefile
 RUN make

web/vite.config.ts

@@ -20,7 +20,7 @@ export default defineConfig({
     }
   },
   build: {
-    outDir: '../webui/dist',
+    outDir: '../backend/webui/dist',
     sourcemap: true,
     emptyOutDir: true
   }