feat: add --version and --help to template entrypoint

Add argparse to main.py so the generated project supports --version
(from __init__.__version__) and --help out of the box. Update Docker
verify to test both flags directly via the container entrypoint.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: JonZeolla

.github/workflows/ci.yml

@@ -236,11 +236,8 @@ jobs:
       - name: Verify Docker image
         shell: bash
         run: |
-          # Verify the Python runtime is functional
-          docker run --rm --entrypoint python3 zenable-io/replace-me:latest --version
-          # Verify the project module is importable and reports its version
-          docker run --rm --entrypoint python3 zenable-io/replace-me:latest \
-            -c "from replace_me import __version__; print(__version__)"
+          docker run --rm zenable-io/replace-me:latest --version
+          docker run --rm zenable-io/replace-me:latest --help
       - name: Verify zenable CLI
         shell: bash
         run: |

{{cookiecutter.project_name|replace(" ", "")}}/src/main.py

@@ -3,11 +3,17 @@
 {{ cookiecutter.project_name }} script entrypoint
 """
 
-from {{ cookiecutter.project_slug }} import config
+import argparse
+
+from {{ cookiecutter.project_slug }} import __version__, config
 
 
 def main():
     """Main entry point for the application."""
+    parser = argparse.ArgumentParser(description="{{ cookiecutter.project_short_description | replace('"', '\\"') | replace("'", "\\\\'") }}")
+    parser.add_argument("--version", action="version", version=f"%(prog)s {__version__}")
+    parser.parse_args()
+
     log = config.setup_logging()
     log.debug("Logging initialized with level: %s", log.level)