Fix Gitea runner CI: remove sudo, install system deps via apt, replace setup-python with apt-get

.github/workflows/ci.yml

@@ -12,6 +12,15 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - uses: dtolnay/rust-toolchain@stable
+      - run: |
+          apt-get update
+          apt-get install -y \
+            libgtk-3-dev \
+            libwebkit2gtk-4.1-dev \
+            libayatana-appindicator3-dev \
+            librsvg2-dev \
+            libssl-dev \
+            patchelf
       - run: cargo test
         working-directory: src-tauri
       - run: cargo check --release
@@ -38,8 +47,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-python@v5
-        with:
-          python-version: '3.12'
-      - run: pip install pytest
-      - run: python -m pytest backend/tests/ || true
+      - run: |
+          apt-get update
+          apt-get install -y python3 python3-pip
+      - run: pip3 install pytest
+      - run: python3 -m pytest backend/tests/ || true