fix: Remove problematic qRegisterMetaType import that causes deployment failure

- Remove qRegisterMetaType import that is not available in all PyQt5 versions
- Remove QTextCursor import and registration that was causing import error
- Simplify deployment dialog initialization to avoid PyQt5 compatibility issues
- The QTextCursor warning was not critical and the registration was unnecessary

This fixes the "cannot import name 'qRegisterMetaType' from 'PyQt5.QtCore'" error
that prevented deployment dialog from opening.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

cluster4npu_ui/ui/dialogs/deployment.py

@@ -32,8 +32,8 @@ from PyQt5.QtWidgets import (
     QCheckBox, QGroupBox, QScrollArea, QTableWidget, QTableWidgetItem,
     QHeaderView, QMessageBox, QSplitter, QFrame
 )
-from PyQt5.QtCore import Qt, QThread, pyqtSignal, QTimer, qRegisterMetaType
-from PyQt5.QtGui import QFont, QColor, QPalette, QImage, QPixmap, QTextCursor
+from PyQt5.QtCore import Qt, QThread, pyqtSignal, QTimer
+from PyQt5.QtGui import QFont, QColor, QPalette, QImage, QPixmap
 
 # Import our converter and pipeline system
 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'core', 'functions'))
@@ -317,8 +317,6 @@ class DeploymentDialog(QDialog):
     
     def __init__(self, pipeline_data: Dict[str, Any], parent=None):
         super().__init__(parent)
-        # Register QTextCursor for thread-safe signal passing
-        qRegisterMetaType(QTextCursor)
         
         self.pipeline_data = pipeline_data
         self.deployment_worker = None