photoshop_recipe_apply_color_grade

Apply a named color grading preset as a non-destructive layer group (Hue/Saturation adjustment + brightness/contrast tweak). Users often say: cinematic look, teal and orange, moody grade, color grade. Use when: the user wants a quick stylistic look applied to the active document. Do NOT use when: the user wants subject-specific color edits (e.g. only the skin) — current recipe applies globally. Returns: { ok, summary, details: { preset, group_name } }. Preconditions: active document in RGB mode. CMYK/Grayscale return unsupported_color_mode. Side effects: adds one layer group with adjustment layers; one undo reverts.