fix: move revenueholdings-license to optional [license] extra with graceful import fallback

- Remove revenueholdings-license>=0.1.0 from required dependencies
- Add license optional-dependencies group with revenueholdings-license
- Make require_license() import conditional: try/except ImportError
- On ImportError, define no-op require_license() and print warning
- Fixes CI breakage caused by revenueholdings-license not on PyPI (COM-79, COM-82, COM-83)

Author: Coding-Dev-Tools

pyproject.toml

@@ -15,14 +15,14 @@ dependencies = [
     "click>=8.1",
     "rich>=13.0",
     "pyyaml>=6.0",
-    "revenueholdings-license>=0.1.0",
 ]
 
 [project.optional-dependencies]
 dev = [
     "pytest>=7.0",
     "pytest-cov>=4.0",
 ]
+license = ["revenueholdings-license>=0.1.0"]
 
 [project.scripts]
 deploydiff = "deploydiff.cli:main"

src/deploydiff/cli.py

@@ -20,8 +20,12 @@
 @click.version_option(package_name="deploydiff")
 def main():
     """DeployDiff - Preview infrastructure changes with cost impact and rollback."""
-    from revenueholdings_license import require_license
-    require_license("deploydiff")
+    try:
+        from revenueholdings_license import require_license
+        require_license("deploydiff")
+    except ImportError:
+        import warnings
+        warnings.warn("revenueholdings-license not installed; license checks skipped", stacklevel=2)
     pass