Initial upload: DevDash CLI with TUI dashboard

src/main.py

@@ -0,0 +1,18 @@
+from textual.app import App
+from textual import events
+from src.ui.screens.dashboard import DashboardScreen
+
+
+class DevDashApp(App):
+    def __init__(self):
+        super().__init__()
+        self.refresh_interval = 30
+        self.current_repo = None
+
+    async def on_mount(self) -> None:
+        self.push_screen(DashboardScreen())
+
+
+def main():
+    app = DevDashApp()
+    app.run()