Restructure as runnable Python module

Convert email_forwarder.py to a package with __main__.py for module execution.
Update systemd service to use -m email_forwarder.
Configure pyproject.toml to exclude state/ from packaging.

Changes:
- Create email_forwarder/ package with __init__.py and __main__.py
- Move main script to email_forwarder/email_forwarder.py
- Update ExecStart to python -m email_forwarder
- Add setuptools config to exclude state/ directory

README.md

@@ -38,5 +38,5 @@ This will set up the virtual environment, systemd services, and provide post-ins
 ## Troubleshooting
 
 - Logs: `journalctl --user -u email_forwarder.service`
-- Test: `source venv/bin/activate && python email_forwarder.py`
+- Test: `source venv/bin/activate && python -m email_forwarder`
 - Timezone issues: Adjust UTC offset in script if needed.

email_forwarder.service

@@ -2,7 +2,7 @@
 Description=Email Forwarder
 
 [Service]
-ExecStart=${PROJECT_DIR}/venv/bin/python ${PROJECT_DIR}/email_forwarder.py
+ExecStart=${PROJECT_DIR}/venv/bin/python -m email_forwarder
 ExecStartPost=/usr/bin/curl -fsS --retry 3 ${UPTIME_SUCCESS_URL}
 OnFailure=email_forwarder-fail-notify.service
 

email_forwarder/__init__.py

@@ -0,0 +1 @@
+# Email Forwarder Package

email_forwarder/__main__.py

@@ -0,0 +1,4 @@
+from .email_forwarder import main
+
+if __name__ == "__main__":
+    main()

pyproject.toml

@@ -7,4 +7,7 @@ version = "0.1.0"
 dependencies = [
     "imap-tools",
     "python-dotenv",
-]
+]
+
+[tool.setuptools.packages.find]
+exclude = ["state"]