fix(ci): log Linux Tauri bundle diagnostics

.github/workflows/build-and-upload.yml

@@ -651,7 +651,42 @@ jobs:
 
       - name: Build Linux bundle (Tauri)
         working-directory: packages/tauri-app
-        run: npm exec -- tauri build
+        shell: bash
+        env:
+          RUST_BACKTRACE: full
+          RUST_LOG: tauri_bundler=trace
+          TAURI_LOG_LEVEL: debug
+        run: |
+          set -uo pipefail
+
+          build_log="$RUNNER_TEMP/tauri-linux-build.log"
+          status=0
+
+          npm exec -- tauri build 2>&1 | tee "$build_log" || status=$?
+
+          if [ "$status" -eq 0 ]; then
+            exit 0
+          fi
+
+          echo "Tauri Linux bundle failed with exit code $status" >&2
+
+          echo "::group::Tauri build log tail"
+          tail -n 200 "$build_log" || true
+          echo "::endgroup::"
+
+          echo "::group::Bundle output tree"
+          find target -maxdepth 6 \( -type d -o -type f \) | sort || true
+          echo "::endgroup::"
+
+          echo "::group::Likely linuxdeploy temp files"
+          find /tmp -maxdepth 3 \( -iname '*linuxdeploy*' -o -iname '*appimage*' -o -iname '*.desktop' -o -iname '*.log' \) | sort || true
+          echo "::endgroup::"
+
+          echo "::group::Bundle metadata files"
+          find target -maxdepth 8 -type f \( -name '*.desktop' -o -name 'AppRun' -o -name '*.AppImage' -o -name '*.log' -o -name '*.json' \) | sort || true
+          echo "::endgroup::"
+
+          exit "$status"
 
       - name: Package Tauri artifacts (Linux)
         if: ${{ inputs.upload || inputs.upload_actions_artifacts }}