refactor: Move to agent architecture

context/ProjectUtils.hpp

@@ -26,17 +26,6 @@ public:
      */
     static bool isFileInProject(const QString &filePath);
 
-    /**
-     * @brief Find a file in open projects by filename
-     * 
-     * Searches all open projects for a file matching the given filename.
-     * If multiple files with the same name exist, returns the first match.
-     * 
-     * @param filename File name to search for (e.g., "main.cpp")
-     * @return Absolute file path if found, empty string otherwise
-     */
-    static QString findFileInProject(const QString &filename);
-
     /**
      * @brief Get the project root directory
      *