diff --git a/LICENSE b/LICENSE
index f0ef5d4..37bcd37 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2025 mstoeck3. 
+# Copyright (c) 2025 mstoeck3
 
 Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
 
diff --git a/src/gamayun/ingestion_engines/__init__.py b/src/gamayun/ingestion_engines/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/gamayun/ingestion_engines/browserSqlite/__init__.py b/src/gamayun/ingestion_engines/browserSqlite/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/gamayun/ingestion_engines/forensicImage/__init__.py b/src/gamayun/ingestion_engines/forensicImage/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/gamayun/interfaces/__init__.py b/src/gamayun/interfaces/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/gamayun/interfaces/llm/__init__.py b/src/gamayun/interfaces/llm/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/gamayun/interfaces/qdrant/__init__.py b/src/gamayun/interfaces/qdrant/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/gamayun/main.py b/src/gamayun/main.py
index e69de29..a432eba 100644
--- a/src/gamayun/main.py
+++ b/src/gamayun/main.py
@@ -0,0 +1,18 @@
+"""
+Main entry point for the Gamayun forensic investigation application.
+"""
+
+import sys
+from PySide6.QtWidgets import QApplication
+from gamayun.ui.main_window import MainWindow
+
+
+def main():
+    # TODO: Initialize logging here
+    # TODO: Initialize llm client and qdrant client
+    # TODO: start main window
+    exit()
+
+
+if __name__ == "__main__":
+    main()
diff --git a/src/gamayun/ui/__init__.py b/src/gamayun/ui/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/gamayun/ui/main_window.py b/src/gamayun/ui/main_window.py
new file mode 100644
index 0000000..e641868
--- /dev/null
+++ b/src/gamayun/ui/main_window.py
@@ -0,0 +1,5 @@
+from PySide6.QtWidgets import QMainWindow
+
+class GUI(QMainWindow):
+    def __init__(self):
+        pass
\ No newline at end of file