FeatureAdd CLI runner and setup CI/CD workflow

[honeydew78]

No description provided.

[github-actions]

🛡️ Diff-Guard Architectural Risk Report

PR: #0 | Status: 🟢 LOW RISK | Risk Score: 0/100

🔍 Modified Semantic Entities

File	Entity	Change Type
cli.py	git_list_files()	ADDED
cli.py	git_show()	ADDED
cli.py	git_diff_files()	ADDED
cli.py	run_analysis()	ADDED
cli.py	main()	ADDED
tests/test_api.py	test_webhook_missing_header()	ADDED
tests/test_api.py	test_webhook_ignored_event()	ADDED
tests/test_api.py	test_webhook_ignored_action()	ADDED
tests/test_api.py	test_webhook_accepted_action()	ADDED
tests/test_graph_engine.py	test_resolve_relative_import()	ADDED
tests/test_graph_engine.py	test_build_dependency_graph()	ADDED
tests/test_graph_engine.py	test_get_impacted_files()	ADDED
tests/test_parser.py	test_extract_functions()	ADDED
tests/test_parser.py	test_find_functions_using_symbol()	ADDED

🕸️ Architectural Blast Radius

🟢 No downstream modules are affected by these changes.