Fix CI workflow: pin runners, add missing Qt packages, install linuxdeploy

Author: Copilot

.github/workflows/release.yml

@@ -16,7 +16,7 @@ concurrency:
 
 jobs:
   build-binary:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       contents: write
     outputs:
@@ -65,10 +65,12 @@ jobs:
             ninja-build \
             cmake \
             qt6-base-dev \
+            qt6-base-private-dev \
             qt6-declarative-dev \
             qt6-wayland-dev \
             qt6-svg-dev \
             qt6-tools-dev \
+            qt6-shadertools-dev \
             libgl1-mesa-dev \
             libwayland-dev \
             libxkbcommon-dev \
@@ -175,7 +177,7 @@ jobs:
 
   build-deb:
     needs: build-binary
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04
     permissions:
       contents: write
 
@@ -199,10 +201,12 @@ jobs:
             ninja-build \
             cmake \
             qt6-base-dev \
+            qt6-base-private-dev \
             qt6-declarative-dev \
             qt6-wayland-dev \
             qt6-svg-dev \
             qt6-tools-dev \
+            qt6-shadertools-dev \
             libgl1-mesa-dev \
             libwayland-dev \
             libxkbcommon-dev \
@@ -264,7 +268,7 @@ jobs:
 
   build-appimage:
     needs: build-binary
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-22.04
     permissions:
       contents: write
     env:
@@ -287,10 +291,12 @@ jobs:
             ninja-build \
             cmake \
             qt6-base-dev \
+            qt6-base-private-dev \
             qt6-declarative-dev \
             qt6-wayland-dev \
             qt6-svg-dev \
             qt6-tools-dev \
+            qt6-shadertools-dev \
             libgl1-mesa-dev \
             libwayland-dev \
             libxkbcommon-dev \
@@ -311,6 +317,14 @@ jobs:
             npm \
             libfuse2
 
+      - name: Install linuxdeploy
+        run: |
+          wget -q https://github.com/linuxdeploy/linuxdeploy/releases/download/continuous/linuxdeploy-x86_64.AppImage
+          wget -q https://github.com/linuxdeploy/linuxdeploy-plugin-qt/releases/download/continuous/linuxdeploy-plugin-qt-x86_64.AppImage
+          chmod +x linuxdeploy-x86_64.AppImage linuxdeploy-plugin-qt-x86_64.AppImage
+          sudo mv linuxdeploy-x86_64.AppImage /usr/local/bin/linuxdeploy
+          sudo mv linuxdeploy-plugin-qt-x86_64.AppImage /usr/local/bin/linuxdeploy-plugin-qt
+
       - name: Prepare dirs
         run: mkdir -p build install