refactor: Improve project Structure

src/omnia/main.py

@@ -0,0 +1,22 @@
+from pathlib import Path
+
+from omnia.game_loop import start_game
+from omnia.logging_setup import configure_logging
+from omnia.scenario_loader import load_scenario, save_scenario
+
+# Find demo.json in project root (go up from src/omnia to root)
+SCENARIO_PATH = Path(__file__).parent.parent.parent / "demo.json"
+
+
+if __name__ == "__main__":
+    configure_logging()
+    scenario = load_scenario(SCENARIO_PATH)
+    start_game(
+        scenario.entities,
+        scenario.player_id,
+        world_time=scenario.metadata.get("world_time"),
+        location=scenario.metadata.get("location", "Unknown"),
+        world_state=scenario.world_state,
+        spatial_graph=scenario.spatial_graph,
+    )
+    save_scenario(SCENARIO_PATH, scenario)