Add initial GUI program

pyproject.toml

@@ -12,6 +12,7 @@ dependencies = []
 
 [project.scripts]
 trove = "trovedb.cli:cli_main"
+qtrove = "trovedb.qgui.qtrove:main"
 
 [project.optional-dependencies]
 dev = [

trovedb/qgui/main_window.py

@@ -0,0 +1,53 @@
+from PySide6.QtCore import Qt
+from PySide6.QtGui import QAction, QKeySequence
+from PySide6.QtWidgets import (
+    QLabel,
+    QMainWindow,
+    QSplitter,
+    QStatusBar,
+    QToolBar,
+    QVBoxLayout,
+    QWidget
+)
+
+class TroveMainWindow(QMainWindow):
+    def __init__(self):
+        super().__init__()
+        self.setWindowTitle("Trove")
+
+        # ── Toolbar ──
+        toolbar = QToolBar("Main")
+        toolbar.setMovable(False)
+        self.addToolBar(toolbar)
+
+        new_action = QAction("New", self)
+        new_action.setShortcut(QKeySequence.StandardKey.New)
+        toolbar.addAction(new_action)
+
+        save_action = QAction("Save", self)
+        save_action.setShortcut(QKeySequence.StandardKey.Save)
+        toolbar.addAction(save_action)
+
+        toolbar.addSeparator()
+
+        # ── Central layout ──
+        central = QWidget()
+        self.setCentralWidget(central)
+        layout = QVBoxLayout(central)
+        layout.setContentsMargins(0, 0, 0, 0)
+        layout.setSpacing(0)
+
+        # Horizontal splitter: tree | editor
+        splitter = QSplitter(Qt.Orientation.Horizontal)
+
+        self._note_browser = QLabel("Note Browser")
+        splitter.addWidget(self._note_browser)
+
+        self._tool = QLabel("View/Edit Tool")
+        splitter.addWidget(self._tool)
+
+        layout.addWidget(splitter, stretch=1)
+
+        # ── Status bar ──
+        self.setStatusBar(QStatusBar())
+        self.statusBar().showMessage("Ready")

trovedb/qgui/qtrove.py

@@ -0,0 +1,23 @@
+#!/usr/bin/env python3
+"""PySide6 GUI for Trove"""
+
+import sys
+
+from PySide6.QtWidgets import (
+    QApplication,
+)
+
+from .main_window import TroveMainWindow
+
+def main():
+    app = QApplication(sys.argv)
+
+    # Respect system theme on KDE
+    app.setStyle("Fusion")
+
+    window = TroveMainWindow()
+    window.show()
+    sys.exit(app.exec())
+
+if __name__ == '__main__':
+    main()