Update Channel

Code/hostname uniqueness excludes self. Use the translations map for locale-nested attributes (name, description, seo_*, maintenance_mode_text). Top-level scalar fields broadcast to every configured locale via the repository.

Send the assignments as integer-array inputs named locales / currencies / inventory_sources (snake_case). The response returns the channel with locales / currencies / inventorySources as object arrays, plus the homeSeo block and per-locale translations. Omitting the locales / currencies / inventory_sources arrays preserves the channel's existing assignments; supplying any of them replaces that set entirely.

Permission: settings.channels.edit.