fix: use npx instead of yarn to pass --bundles none to Tauri CLI

Yarn v1 strips unknown flags like --bundles before forwarding to the
script. Using npx invokes the Tauri CLI directly, preserving all flags.

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

Author: CodeGhost21

.github/workflows/build.yml

@@ -73,6 +73,6 @@ jobs:
         run: cd skills && yarn install --frozen-lockfile
 
       - name: Build Tauri app
-        run: yarn tauri build --bundles none -- --target x86_64-unknown-linux-gnu
+        run: npx tauri build --bundles none --target x86_64-unknown-linux-gnu
         env:
           NODE_ENV: production