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+---
+kind: fixed
+title: interactive turns enforce the daily spend rail, with task workers and errands exempt
+pr: 1546
+surface: [chat, engine]
+invalidates:
+  - "An interactive chat turn only checked the conversation's own limit, so a day of many conversations could spend past the daily budget without a word. A turn now refuses to start once the day's spend — the ledger's total, or the crew's held day if that is larger — reaches the daily budget, and the refusal names the figure and the door in one line: `/budget day changes it`."
+---
+
+Task workers and errands are exempt from the daily rail: they run inside a turn
+that already passed it, and a worker stopped at the rail would strand the work it
+was given. The budget is read fresh at the door where turns begin, so a changed
+`/budget` takes effect on the next turn without a restart.