ink.branchline.editBud

Edit the title, text, and/or inline formatting of an existing bud. The caller must be signed in and must be the bud's author. The bud must have no children and must not be locked — edits to a bud with descendants would reshape text that later writers have already continued from, and locked buds are frozen by an admin. The AppView overwrites the ink.branchline.bud record in the caller's PDS via putRecord and mirrors the new row into the local read cache. `createdAt` and `bloomsAt` are preserved; the PDS assigns a new CID.