diff --git a/.github/workflows/test-build.yml b/.github/workflows/test-build.yml
index a23d2d8..0db9780 100644
--- a/.github/workflows/test-build.yml
+++ b/.github/workflows/test-build.yml
@@ -61,9 +61,63 @@ jobs:
 
       - name: Build Tauri app
         run: npm run tauri build
-        env:
-          TAURI_SIGNING_PRIVATE_KEY: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY }}
-          TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ${{ secrets.TAURI_SIGNING_PRIVATE_KEY_PASSWORD }}
+
+      - name: Strip bundled GTK/WebKit/GLib stack, rely on the host's instead
+        run: |
+          set -euo pipefail
+          cd src-tauri/target/release/bundle/appimage
+          APPIMAGE=$(ls *.AppImage)
+          chmod +x "$APPIMAGE"
+          ./"$APPIMAGE" --appimage-extract >/dev/null
+
+          LDCONFIG_CACHE=$(ldconfig -p)
+          resolve_lib_path() {
+            awk -v lib="$1" '$1==lib {print $NF; exit}' <<< "$LDCONFIG_CACHE"
+          }
+
+          # WebKitGTK bundled by the AppImage tooling is pinned to whatever the
+          # build image ships, and drifts out of sync with newer host systems
+          # (freezes on old bundled WebKit, EGL/DMABUF crashes on some newer
+          # ones). The only configuration that's tested clean is deferring the
+          # whole GTK/WebKit/GLib stack to the host's own matched libraries, so
+          # we compute the full dependency closure from the host side (whatever
+          # is actually installed here) and strip every bundled copy that's
+          # also part of that closure.
+          declare -A EXCLUDE
+          for seed in libwebkit2gtk-4.1.so.0 libglib-2.0.so.0 libgio-2.0.so.0 libgobject-2.0.so.0 libgmodule-2.0.so.0; do
+            EXCLUDE[$seed]=1
+          done
+
+          changed=1
+          while [ "$changed" -eq 1 ]; do
+            changed=0
+            for lib in "${!EXCLUDE[@]}"; do
+              hostpath=$(resolve_lib_path "$lib")
+              [ -n "$hostpath" ] && [ -e "$hostpath" ] || continue
+              deps=$(ldd "$hostpath" 2>/dev/null | grep -oE '[a-zA-Z0-9._+-]+\.so[0-9.]*' | sort -u) || true
+              for d in $deps; do
+                if [ -z "${EXCLUDE[$d]:-}" ]; then
+                  if find squashfs-root/usr/lib -maxdepth 1 -name "${d}*" 2>/dev/null | grep -q .; then
+                    EXCLUDE[$d]=1
+                    changed=1
+                  fi
+                fi
+              done
+            done
+          done
+
+          echo "Excluding ${#EXCLUDE[@]} bundled libraries, relying on the host's instead:"
+          for lib in "${!EXCLUDE[@]}"; do echo "  $lib"; done | sort
+
+          for lib in "${!EXCLUDE[@]}"; do
+            find squashfs-root/usr/lib -maxdepth 1 -name "${lib%.so*}.so*" -delete
+          done
+
+          curl -sSL -o appimagetool "https://github.com/AppImage/appimagetool/releases/download/continuous/appimagetool-x86_64.AppImage"
+          chmod +x appimagetool
+          rm -f "$APPIMAGE"
+          ARCH=x86_64 ./appimagetool --appimage-extract-and-run squashfs-root "$APPIMAGE"
+          rm -rf squashfs-root
 
       - name: Upload AppImage artifact
         uses: actions/upload-artifact@v4