photoshop_recipe_enhance_portrait

Set up a non-destructive portrait enhancement: duplicates the active layer, builds a frequency separation pair (low/high) for skin smoothing, and adds an auto-tone curves adjustment on top. Grouped as "Enhance Portrait" and reversible with one undo. Users often say: smooth skin, retouch portrait, fix blemishes, clean up face. Use when: the user asks to "enhance", "retouch", "clean up" or "smooth" a portrait photo and is happy with a baseline that they can further tweak interactively. Do NOT use when: the user wants destructive, final edits — recommend manual frequency separation work via photoshop_recipe_frequency_separation instead so they can paint by hand. Returns: { ok, summary, details: { intensity, radius_px, group_name } }. Preconditions: active document with a NORMAL or background-converted raster layer. Side effects: appends one layer group of 2-3 layers above the active layer; original layer untouched.