Add note browser pane

trovedb/qgui/qtrove.py

@@ -2,9 +2,11 @@
 """PySide6 GUI for Trove"""
 
 import sys
+from trovedb import trove_factory, user_env
 
 from PySide6.QtWidgets import (
     QApplication,
+    QMessageBox,
 )
 
 from .main_window import TroveMainWindow
@@ -12,10 +14,16 @@ from .main_window import TroveMainWindow
 def main():
     app = QApplication(sys.argv)
 
+    trove = trove_factory.get_trove(user_env.TROVEBASE) if user_env.TROVEBASE else None
+
+    if trove is None:
+        QMessageBox.critical(None, "Error", "Trove Database Not Found")
+        sys.exit(1)
+
     # Respect system theme on KDE
     app.setStyle("Fusion")
 
-    window = TroveMainWindow()
+    window = TroveMainWindow(trove)
     window.show()
     window.restore_settings()
     sys.exit(app.exec())