Posted: the seal, and unposting — What the seal means

Posting stamps the record — when, and by whom — and from that moment every write path refuses it: cell edits in the grid, the record page, the peek drawer, bulk edits, imports, automation steps, and the public API (which answers with a clean 409 rather than an error page). Posted rows wear a seal glyph, and the panel on the record collapses into the seal itself: Posted · date · name. The point is what the word starts to mean: a posted invoice is the invoice that was sent. Nobody "just fixes" a number on it three weeks later, because nobody can. Posting stops writes, and nothing else — a sealed record keeps taking part in everything that only reads it.