[johnchase]

Version bump and changelog for 0.1.3, per RELEASING.md ("Before a release").

0.1.3 contents (dev since 0.1.2):

• Saved variable values and input paths in a .adg are the lowest argument layer, under --arguments and flags; --help shows them as defaults (Apply the configuration bundled in a pipeline file as the lowest argument layer #66, with the Remove adagio pipeline config and --no-bundled-config #68 cleanup)
• Saved execution environments run without a --config file, which still overrides them; the run header shows each environment's source (Run with the environments saved in the pipeline file, under --config #69)
• A per-output path ending in / is a directory (A per-output path ending in / is a folder #70) — added to the changelog here, it was missing
• Fix: URL artifact inputs with polymorphic types no longer fail before execution (Fix polymorphic URL artifact input validation #67)

adagio pipeline config and --no-bundled-config came and went on dev (#66 → #68) and were never released, so the changelog does not mention them.

Local checks: uv run pytest 281 passed, 1 skipped; python -m build produced adagio_cli-0.1.3 wheel and sdist; twine check PASSED; adagio --version prints 0.1.3.

Next (RELEASING.md "Production release"): after this merges, promote dev → main, then tag v0.1.3 on that main commit and approve the pypi environment deployment. adagio-local then pins adagio-cli==0.1.3 for the Runtime Server 0.1.5 and Desktop 0.3.23 releases.