feat: implement cron window spread backend (#4566)

- New DB fields on Schedule and ScheduleInstance - Use `queueTimestamp` for the "effectiveAt" delayed start time, propagate it to Clickhouse TaskRun table - Disable fastpath for delayed jobs - Add schedule timing logic, API endpoints with windows, persistence - Calculate phase for every schedule, only persist when window is non-null - Additional o11y for phased rollout
2026-08-12 12:24:32 +01:00
parent 3c5bbc1607
commit ed1bb72fb8
43 changed files with 2137 additions and 89 deletions
@@ -0,0 +1,6 @@
+---
+area: webapp
+type: feature
+---
+
+Add backend support for delaying cron schedules within a specified window with a minimum of 60 seconds.