wallpaper selector: add address bar

.config/quickshell/ii/modules/common/functions/FileUtils.qml

@@ -24,6 +24,20 @@ Singleton {
         return trimmed.split(/[\\/]/).pop();
     }
 
+    /**
+     * Extracts the folder name from a directory path
+     * @param {string} str
+     * @returns {string}
+     */
+    function folderNameForPath(str) {
+        if (typeof str !== "string") return "";
+        const trimmed = trimFileProtocol(str);
+        // Remove trailing slash if present
+        const noTrailing = trimmed.endsWith("/") ? trimmed.slice(0, -1) : trimmed;
+        if (!noTrailing) return "";
+        return noTrailing.split(/[\\/]/).pop();
+    }
+
     /**
      * Removes the file extension from a file path or name
      * @param {string} str
@@ -38,4 +52,18 @@ Singleton {
         }
         return trimmed;
     }
+
+    /**
+     * Returns the parent directory of a given file path
+     * @param {string} str
+     * @returns {string}
+     */
+    function parentDirectory(str) {
+        if (typeof str !== "string") return "";
+        const trimmed = trimFileProtocol(str);
+        const parts = trimmed.split(/[\\/]/);
+        if (parts.length <= 1) return "";
+        parts.pop();
+        return parts.join("/");
+    }
 }