fix(ci): add rustfmt/clippy components, fix Windows npm path

Add rustfmt and clippy components to setup-rust-toolchain action
(nightly minimal profile omits them). Replace npm --prefix with
Task dir directive to avoid forward-slash path resolution bug on
Windows GitHub-hosted runners.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: pythoninthegrass

.github/actions/setup-tauri-build/action.yml

@@ -74,6 +74,7 @@ runs:
       uses: actions-rust-lang/setup-rust-toolchain@v1
       with:
         toolchain: ${{ steps.rust-version-unix.outputs.toolchain || steps.rust-version-windows.outputs.toolchain }}
+        components: rustfmt, clippy
         target: ${{ runner.os == 'Windows' && 'x86_64-pc-windows-msvc' || '' }}
         cache: false
 

taskfiles/ci.yml

@@ -110,8 +110,9 @@ tasks:
 
   frontend-build:
     desc: "Build frontend assets"
+    dir: "{{.ROOT_DIR}}/app/frontend"
     cmds:
-      - npm --prefix {{.ROOT_DIR}}/app/frontend run build
+      - npm run build
     sources:
       - "{{.ROOT_DIR}}/app/frontend/js/**/*"
       - "{{.ROOT_DIR}}/app/frontend/css/**/*"