tooling: add docstring to just deps-compile

This causes it to appear in autocompletion

justfile

@@ -124,6 +124,8 @@ schema-status: (_up "dev-db")
 
 # upgrade the (imported or created) schema to the current revision
 schema-upgrade: (_up "dev-db") (alembic "upgrade" "head")
+
+# extract `requirements` lockfiles from `pyproject.toml` dependency spec
 deps-compile:
     uv pip compile pyproject.toml --generate-hashes -o requirements.txt
     uv pip compile pyproject.toml --generate-hashes --extra dev -o requirements.dev.txt