matugen: validation

Common/Theme.qml

@@ -811,7 +811,6 @@ Singleton {
         const desiredPath = stateDir + "/matugen.desired.json"
 
         Quickshell.execDetached(["sh", "-c", `mkdir -p '${stateDir}' && cat > '${desiredPath}' << 'EOF'\n${json}\nEOF`])
-        Quickshell.execDetached(["rm", "-f", stateDir + "/matugen.key"])
         workerRunning = true
         const syncModeWithPortal = (typeof SettingsData !== "undefined" && SettingsData.syncModeWithPortal) ? "true" : "false"
         if (rawWallpaperPath.startsWith("we:")) {

scripts/matugen-worker.sh

@@ -41,6 +41,7 @@ LOCK="$STATE_DIR/matugen-worker.lock"
 exec 9>"$LOCK"
 flock 9
 
+rm -f "$BUILT_KEY"
 
 read_desired() {
   [[ ! -f "$DESIRED_JSON" ]] && { echo "no desired state" >&2; exit 0; }
@@ -290,6 +291,13 @@ EOF
     SURFACE=$(echo "$JSON_FLAT" | sed -n "s/.*\"surface\" *: *{ *[^}]*\"$mode\" *: *\"\\(#[0-9a-fA-F]\\{6\\}\\)\".*/\\1/p")
   fi
 
+  if [[ -z "$PRIMARY" ]]; then
+    echo "Error: Failed to extract PRIMARY color from matugen JSON (mode: $mode)" >&2
+    echo "This may indicate an incompatible matugen JSON format" >&2
+    set_system_color_scheme "$mode"
+    return 2
+  fi
+
   if command -v ghostty >/dev/null 2>&1 && [[ -f "$CONFIG_DIR/ghostty/config-dankcolors" ]]; then
     OUT=$("$SHELL_DIR/matugen/dank16.py" "$PRIMARY" $([[ "$mode" == "light" ]] && echo --light) ${HONOR:+--honor-primary "$HONOR"} ${SURFACE:+--background "$SURFACE"} 2>/dev/null || true)
     if [[ -n "${OUT:-}" ]]; then