Reduce idle CPU use and prioritize compositor rendering (#62)

Avoid background title updates when no shell window list is visible, and skip output and capture invalidation for titles outside compositor decorations. Preserve focused titles, fresh window lists and capture privacy.

Request high EGL context priority with fallback, cover rendering and native title behavior in CI, and keep audio recording flowing while video capture is idle.

.github/workflows/workspace-checks.yml

@@ -52,11 +52,13 @@ jobs:
           FERESE_TEST_PORTAL_INTERFACES: ${{ github.workspace }}/build/portal-contracts/data
           FERESE_TEST_PORTAL_BACKGROUND: "1"
         run: python3 -m unittest discover -s scripts/tests -v
-      - name: Test capture privacy, resize dependencies and cursor composition
+      - name: Test EGL initialization, capture privacy and cursor composition
         env:
           LIBGL_ALWAYS_SOFTWARE: "1"
           EGL_PLATFORM: surfaceless
         run: |
+          cargo +1.95.0 test --locked -p ferese backends::direct::context::tests -- --include-ignored --nocapture
+          cargo +1.95.0 test --locked -p ferese backends::direct::capture::tests::unchanged_capture_skips_preparation_without_losing_source_updates -- --ignored --nocapture
           cargo +1.95.0 test --locked -p ferese state::capture_privacy::tests -- --ignored --nocapture
           cargo +1.95.0 test --locked -p ferese backends::direct::capture::tests::capture_recomposes_cursor_without_touching_the_display_target -- --ignored --nocapture
           cargo +1.95.0 test --locked -p ferese winit::tests::capture_failure_restores_display_target_and_subsequent_frames_render -- --ignored --nocapture
@@ -89,8 +91,8 @@ jobs:
           sudo apt-get update
           sudo apt-get install -y weston xwayland x11-utils xauth dbus-daemon \
             build-essential pkg-config clang libclang-dev libxcb1-dev libxcb-cursor-dev libxkbcommon-dev \
-            libwayland-dev libgbm1 libseat1 libinput10 libpipewire-0.3-0t64 \
-            libegl1 libegl-mesa0 libgl1-mesa-dri fonts-dejavu-core
+            libwayland-dev wayland-protocols libgbm1 libseat1 libinput10 libpipewire-0.3-0t64 \
+            libegl1 libegl-mesa0 libgl1-mesa-dri mesa-vulkan-drivers fonts-dejavu-core
       - name: Create the shared X11 socket directory
         run: sudo install -d -m 1777 -o root -g root /tmp/.X11-unix
       - uses: actions/download-artifact@v8