Correct IPC file load and OCR button signal linkage

src/core/controllers/base_controller_mixin.py

@@ -23,7 +23,7 @@ class BaseControllerMixin:
 
             if os.path.isdir(arg):
                 message = f"DIR|{arg}"
-                ipc_server.send_ipc_message(message)
+                event_system.subscribe("post-file-to-ipc", (message,))
 
         if not files: return
 

src/core/widgets/ocr_window.py

@@ -148,7 +148,7 @@ class OCRWindow(Gtk.Window):
 
 
     def _run_ocr_button(self, button):
-        active_image = event_system.emit_and_await("get_active_image_path")
+        active_image = event_system.emit_and_await("get-active-image-path")
 
         if not active_image: return