fix: resolve CI linting and type errors

app/src/promptforge/cli/main.py

@@ -0,0 +1,22 @@
+import click
+from pathlib import Path
+
+from promptforge import __version__
+
+
+@click.group()
+@click.version_option(version=__version__, prog_name="PromptForge")
+@click.option(
+    "--prompts-dir",
+    type=click.Path(exists=False, file_okay=False, dir_okay=True, path_type=Path),
+    help="Directory containing prompts",
+)
+@click.pass_context
+def main(ctx: click.Context, prompts_dir: Path):
+    """PromptForge - AI Prompt Versioning, Testing & Registry."""
+    ctx.ensure_object(dict)
+    ctx.obj["prompts_dir"] = prompts_dir or Path.cwd() / "prompts"
+
+
+if __name__ == "__main__":
+    main()