fix: persist last_offense_time and reset offenses after 24h

last_offense_time was in-memory only — lost on restart, so the
offense_reset_minutes check never fired after a reboot. Now persisted
as LastOffenseAt FLOAT in UserState. On startup hydration, stale
offenses (and warned flag) are auto-cleared if the reset window has
passed. Bumped offense_reset_minutes from 2h to 24h.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

utils/drama_tracker.py

@@ -286,6 +286,13 @@ class DramaTracker:
                 user.notes = state["user_notes"]
             if state.get("warned"):
                 user.warned_since_reset = True
+            if state.get("last_offense_at"):
+                user.last_offense_time = state["last_offense_at"]
+                # Apply time-based offense reset at load time
+                if time.time() - user.last_offense_time > self.offense_reset_seconds:
+                    user.offense_count = 0
+                    user.warned_since_reset = False
+                    user.last_offense_time = 0.0
             count += 1
         return count