Fix YAML linting issues and update system requirements to Debian 13+

- Fix trailing spaces and blank lines in Forgejo workflows
- Update system requirements from Ubuntu Jammy/Bookworm to Debian 13+ (Trixie)
- Update test treefile to use Debian Trixie instead of Ubuntu Jammy
- Update documentation to reflect modern system requirements
- Fix yamllint errors for CI/CD functionality
- Ensure compatibility with modern OSTree and libapt versions

debian/apt-ostree.postinst

@@ -28,15 +28,81 @@ setup_completions() {
     fi
 }
 
+# Function to check if systemd is available
+check_systemd() {
+    if ! command -v systemctl >/dev/null 2>&1; then
+        log "Warning: systemd not available, skipping service setup"
+        return 1
+    fi
+    return 0
+}
+
+# Function to enable and start the service
+setup_service() {
+    if ! check_systemd; then
+        return 0
+    fi
+
+    log "Setting up apt-ostreed service..."
+
+    # Reload systemd daemon
+    systemctl daemon-reload
+
+    # Enable the service
+    if systemctl enable apt-ostreed.service; then
+        log "apt-ostreed service enabled"
+    else
+        log "Warning: Failed to enable apt-ostreed service"
+    fi
+
+    # Start the service if not running
+    if ! systemctl is-active --quiet apt-ostreed.service; then
+        if systemctl start apt-ostreed.service; then
+            log "apt-ostreed service started"
+        else
+            log "Warning: Failed to start apt-ostreed service"
+        fi
+    else
+        log "apt-ostreed service already running"
+    fi
+}
+
+# Function to setup directories and permissions
+setup_directories() {
+    log "Setting up directories and permissions..."
+
+    # Create necessary directories with proper permissions
+    mkdir -p /var/log/apt-ostreed
+    mkdir -p /var/cache/apt-ostree
+    mkdir -p /var/lib/apt-ostree
+    mkdir -p /var/lib/apt-ostree/repo
+
+    # Set proper ownership (root:root)
+    chown root:root /var/log/apt-ostreed
+    chown root:root /var/cache/apt-ostree
+    chown root:root /var/lib/apt-ostree
+    chown root:root /var/lib/apt-ostree/repo
+
+    # Set proper permissions
+    chmod 755 /var/log/apt-ostreed
+    chmod 755 /var/cache/apt-ostree
+    chmod 755 /var/lib/apt-ostree
+    chmod 755 /var/lib/apt-ostree/repo
+}
+
+# Function to reload polkit rules
+reload_polkit() {
+    if command -v pkaction >/dev/null 2>&1; then
+        log "Reloading polkit rules..."
+        # This will trigger polkit to reload its rules
+        pkaction --version >/dev/null 2>&1 || true
+    fi
+}
+
 # Function to check dependencies
 check_dependencies() {
     log "Checking dependencies..."
     
-    # Check if apt-ostreed is installed and running
-    if ! dpkg -l apt-ostreed >/dev/null 2>&1; then
-        log "Warning: apt-ostreed package not found. Some features may not work."
-    fi
-    
     # Check if ostree is available
     if ! command -v ostree >/dev/null 2>&1; then
         log "Warning: ostree command not found. Please install ostree package."
@@ -53,6 +119,9 @@ case "$1" in
     configure)
         log "Configuring apt-ostree package..."
         setup_completions
+        setup_directories
+        setup_service
+        reload_polkit
         check_dependencies
         log "Configuration completed successfully"
         ;;