photoshop_apply_high_pass

Apply the High Pass filter to the active raster layer — edge/detail extraction for sharpening workflows or frequency separation prep. Users often say: high pass filter, sharpen edges, extract details, frequency separation high layer. Use when: sharpening via overlay blend, detail extraction, or prepping a high-frequency layer. Do NOT use on text, Smart Objects, or the Background layer — rasterize or convert first (photoshop_rasterize_layer). Returns: JSON { ok, summary, details: { filter, radius, context } }. Preconditions: active document; normal (raster) layer selected. Side effects: one history step.