fix(ci): exclude Tauri GUI crate from test and clippy jobs

The GUI crate requires system libraries (webkit2gtk, glib) that are not
installed in the standard test/clippy CI jobs. Tauri GUI is tested
separately in the tauri-check job with proper Linux dependencies.

Author: us

.github/workflows/ci.yml

@@ -35,10 +35,10 @@ jobs:
           key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
 
       - name: Build
-        run: cargo build --verbose
+        run: cargo build --workspace --exclude null-e-gui --verbose
 
       - name: Run tests
-        run: cargo test --verbose
+        run: cargo test --workspace --exclude null-e-gui --verbose
 
   clippy:
     name: Clippy
@@ -48,7 +48,7 @@ jobs:
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: clippy
-      - run: cargo clippy -- -D warnings
+      - run: cargo clippy --workspace --exclude null-e-gui -- -D warnings
 
   fmt:
     name: Format