v0.2.10

• nolgia color-presets — the built-in color-grade preset looks for
  Studio compositions. list prints the catalog (slug, name, description;
  --json includes the manifest version), and cube <slug> [-o FILE]
  downloads a preset's 33-point .cube LUT (stdout by default, so it pipes
  straight into grading tools). Both endpoints are public — no login needed —
  and unknown slugs surface the server's 404 detail verbatim.
• Re-vendored the OpenAPI spec with the nolgia-api color-grade contract
  (/color-presets, /color-presets/{slug}/cube, ColorPreset* schemas).