added requirements

requirements.txt

@@ -0,0 +1,10 @@
+# Both scripts (process_exp.py, process_exp_gui.py) use ONLY the Python
+# standard library. No third-party pip packages are required.
+#
+# System-level requirements instead:
+#   - Python >= 3.9  (3.12 recommended; tested on 3.12)
+#   - For the GUI only (process_exp_gui.py): the tkinter module must be
+#     available. On Debian/Ubuntu if "import tkinter" fails, install:
+#       sudo apt install python3-tk
+#     On Fedora:        sudo dnf install python3-tkinter
+#     On macOS/Windows: ships with the standard python.org installer.