feat(flatpak): add task to check for required Flatpak SDK and dependencies before building

Taskfile.yml

@@ -258,8 +258,30 @@ tasks:
             - cd "{{.ANDROID_DIR}}" && ./gradlew clean
             - rm -rf "{{.PYTHON_SRC_DIR}}/meshchatx"
 
+    flatpak-check-sdk:
+        desc: Check if required Flatpak SDK is installed
+        cmds:
+            - |
+                if ! flatpak info org.freedesktop.Sdk//24.08 >/dev/null 2>&1; then
+                    echo "Flatpak SDK 24.08 is not installed."
+                    echo "Install it with: flatpak install org.freedesktop.Sdk//24.08"
+                    exit 1
+                fi
+                if ! flatpak info org.freedesktop.Platform//24.08 >/dev/null 2>&1; then
+                    echo "Flatpak Platform runtime 24.08 is not installed."
+                    echo "Install it with: flatpak install org.freedesktop.Platform//24.08"
+                    exit 1
+                fi
+                if ! flatpak info org.freedesktop.Sdk.Extension.node20//24.08 >/dev/null 2>&1; then
+                    echo "Flatpak Node.js 20 extension is not installed."
+                    echo "Install it with: flatpak install org.freedesktop.Sdk.Extension.node20//24.08"
+                    exit 1
+                fi
+                echo "Required Flatpak SDK, Platform runtime, and Node.js extension are installed."
+
     build-flatpak:
         desc: Build Flatpak package
+        deps: [flatpak-check-sdk]
         cmds:
             - flatpak-builder --force-clean build-dir flatpak.json
 
@@ -272,4 +294,4 @@ tasks:
     run-flatpak:
         desc: Run Flatpak application
         cmds:
-            - flatpak run com.sudoivan.reticulummeshchat
+            - flatpak run com.sudoivan.reticulummeshchatx