fix: Add WASM target and npm install for CI build

.github/workflows/build-mips.yml

@@ -17,6 +17,8 @@ jobs:
 
     - name: Install Rust
       uses: dtolnay/rust-toolchain@stable
+      with:
+        targets: wasm32-unknown-unknown
 
     - name: Install Trunk
       uses: jetli/trunk-action@v0.5.0
@@ -26,6 +28,7 @@ jobs:
     - name: Build Frontend
       run: |
         cd frontend
+        npm install
         trunk build --release
 
     - name: Install Cross