photoshop_edit_smart_object_contents

Open a Smart Object for editing (double-click / Edit Contents). The embedded .psb becomes the active document until you save and close it. Users often say: edit smart object, open embedded file, double-click smart layer. Use when: modifying pixels inside an embedded Smart Object non-destructively. Do NOT use when: replacing the whole asset — use photoshop_replace_smart_object_contents. Returns: JSON { ok, summary, details: { parent_document, embedded_document, layer_name } }. Preconditions: Smart Object layer active or named. Side effects: active document switches to the embedded .psb — save/close it to return to the parent document.