fix: CI fixes for tray build and macOS bundle

- Scope brew tap to default archive to avoid duplicate OS/Arch error
- Use pipe delimiter in bundle.sh sed to handle version strings with /
- Derive clean snapshot version for non-tag CI builds
- Run macOS bundle job in parallel with goreleaser (no dependency)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.github/workflows/reusable-release.yml

@@ -160,7 +160,6 @@ jobs:
 
   macos-bundle:
     name: macOS app bundle (${{ matrix.goarch }})
-    needs: [goreleaser]
     runs-on: macos-latest
     strategy:
       matrix:
@@ -181,7 +180,12 @@ jobs:
           cd webui && pnpm install && pnpm run build
       - name: Get version
         id: version
-        run: echo "version=${GITHUB_REF_NAME#v}" >> "$GITHUB_OUTPUT"
+        run: |
+          if [[ "$GITHUB_REF" == refs/tags/v* ]]; then
+            echo "version=${GITHUB_REF_NAME#v}" >> "$GITHUB_OUTPUT"
+          else
+            echo "version=0.0.0-snapshot-${GITHUB_SHA::8}" >> "$GITHUB_OUTPUT"
+          fi
       - name: Build binary
         env:
           CGO_ENABLED: "1"