docs(agentic-ci): fix param name in smart_load_yaml docstring

[github-actions]

What

Fix the Args: section of smart_load_yaml in
packages/data-designer-config/src/data_designer/config/utils/io_helpers.py to
name the parameter the function actually accepts.

     Args:
-        config: The config as a dict, yaml string, or yaml file path.
+        yaml_in: The config as a dict, yaml string, or yaml file path.

Why

The signature is def smart_load_yaml(yaml_in: str | Path | dict) -> dict, but
the sole Args: entry documented a parameter named config. No such parameter
exists — the name appears to predate a rename. This is a public config-package
helper (imported by data_designer.cli.utils.config_loader), so the drift is
visible to anyone reading the API docs or trying to call it by keyword.

The description after the colon is still accurate and is left untouched; only
the parameter-name token changes. The docstring's bare-name style (no
parenthesized type) is preserved.

Verification

• Re-read the function: one positional param, yaml_in, forwarded to
  _smart_load_yaml_internal. No config param on any code path.
• make test-config — 644 passed.

Provenance

Found by the docs-and-references daily agentic-ci audit. Category
docstring-drift, ranked first this run at confidence 0.75 / severity medium —
the only backlog finding where the docstring names a parameter that does not
exist (the rest are omissions).

🤖 Generated with Claude Code

[greptile-apps]

Confidence Score: 5/5

The PR appears safe to merge because the documentation-only correction accurately matches the function signature.

Summary

• Renames the stale config argument entry to yaml_in.
• Makes no runtime or behavioral changes.

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