changelog.d/4871-prd-hour-cycle-server-confirm.md

Rama main · réplica de lectura del repositorio original.

- **PRD acceptance harness: the Word and Sheet hour rows confirm each cycle from the server head, not from a stale save label (#4871).** In RC-4 the Word table step saved versions 13 and 14 before cycle 10 typed; the typing never reached the document, yet the cycle compared the label against version 12, took "Uloženo · verze 14" as its own save and recorded C010 as saved, so the run later reported it as lost. A cycle (and the Sheet warm-up) now counts its markers as saved only when the server head holds every one of them, and the label baseline is taken right before the typing. The table step checks on the server that the cell text is inside a table cell, records in the step trail when an extra click into the first cell was needed, and fails as an input failure ("typing after the table insert did not reach the document") when it still is not. Unit tests: `craft-session/confirm.test.mjs`, run in the PRD runner test step.