docs: align poller comments with freshness rules

src/wf_scheduling/poll.py

@@ -717,13 +717,10 @@ class Scheduler:
         # Fresh read per schedule: the tick lists schedules up front while
         # same-process administration may commit an edit, pause, resume, or
         # delete mid-tick. All admission decisions below (policies,
-        # revision, flags) use this fresh copy, never the listing
-        # snapshot. Two narrow residuals remain: calendar iteration uses
-        # the tick-start occurrence source (a trigger edit takes effect
-        # on the next tick), and an admission decision already in flight
-        # cannot observe a concurrent edit — admission stays idempotent
-        # per (schedule, instant), so the worst case is one run admitted
-        # under just-superseded terms, never a duplicate or replay.
+        # revision, flags, and managed trigger source) use this fresh copy,
+        # never the listing snapshot. A definition edit that races the
+        # final admission recheck is rejected as schedule-changed, so stale
+        # terms cannot create a duplicate or replay.
         try:
             sched = self.schedule_store.get_schedule(sched.id)
         except KeyError: