A daybook entry is written once, in ink, on the day it belongs to — and afterwards it is read, not rewritten. A character entered the same way keeps her record. Described from memory at every job, she is re-entered by mood each time, and every re-entry quietly amends her until the series shows two similar women instead of one. Written once on a daybook card and rested on the closed book, she is simply read back, word for word.
The card holds five lines in fixed order. Age, a plain number. Hair — colour, length, one habitual style. Build in two or three words. Face — one or two enduring details. Signature — the detail that survives a tight crop. Beneath the entry, the day’s line: outfit, setting, hour, light. That line is expected to change at every sitting; the entry does not change at all.
Paste the card word for word at the head of every prompt. Generate at the standard cost of 6 credits, keep the best third, and judge every result against the entry — not against the previous frame, which may itself have drifted off it.
Drift is not a model problem. It is a records problem. Keep the entry written once, and the character holds.