Detection of tracked Python packages in a local LangGraph project.
Mirrors host-backend's host.models.dependency_tracking so that CLI-based
deploys report the same tracked_packages revision metadata that
GitHub-based deploys do. The host backend strictly validates each entry
against <package-name>:<version> with package-name in TRACKED_PACKAGES,
so the detection rules here must match exactly.
Return every tracked package found in deps as <name>:<version> entries.
config is the absolute path to langgraph.json; dep paths in
config_json["dependencies"] are resolved relative to its parent.
Detection precedence per package: uv.lock resolved > pyproject.toml /
requirements.txt specifier > bare reference > extras bracket (last
two recorded as "unknown"). Output is ordered by TRACKED_PACKAGES.
