Fix issues #6, #7, #11, #12, #13: med reminders, push notifications, auth persistence, scheduling conflicts

- Fix TIME object vs string comparison in scheduler preventing adaptive med
  reminders from ever firing (#12, #6)
- Add frequency filtering to midnight schedule creation for every_n_days meds
- Require start_date and interval_days for every_n_days medications
- Add refresh token support (30-day) to API and bot for persistent sessions (#13)
- Add "trusted device" checkbox to frontend login for long-lived sessions (#7)
- Auto-refresh expired tokens in both bot (apiRequest) and frontend (api.ts)
- Restore bot sessions from cache on restart using refresh tokens
- Duration-aware routine scheduling conflict detection (#11)
- Add conflict check when starting routine sessions against medication times
- Add diagnostic logging to notification delivery channels

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

scheduler/daemon.py

@@ -5,9 +5,9 @@ Override poll_callback() with your domain-specific logic.
 """
 
 import os
-import time
+import time as time_module
 import logging
-from datetime import datetime, timezone, timedelta
+from datetime import datetime, timezone, timedelta, time as time_type
 
 import core.postgres as postgres
 import core.notifications as notifications
@@ -249,6 +249,12 @@ def check_adaptive_medication_reminders():
                         # Use base time
                         check_time = sched.get("base_time")
 
+                    # Normalize TIME objects to "HH:MM" strings for comparison
+                    if isinstance(check_time, time_type):
+                        check_time = check_time.strftime("%H:%M")
+                    elif check_time is not None:
+                        check_time = str(check_time)[:5]
+
                     if check_time != current_time:
                         continue
 
@@ -367,6 +373,11 @@ def check_nagging():
                     display_time = sched.get("adjusted_time")
                 else:
                     display_time = sched.get("base_time")
+                # Normalize TIME objects for display
+                if isinstance(display_time, time_type):
+                    display_time = display_time.strftime("%H:%M")
+                elif display_time is not None:
+                    display_time = str(display_time)[:5]
 
                 # Send nag notification
                 user_settings = notifications.getNotificationSettings(user_uuid)
@@ -446,6 +457,39 @@ def _get_distinct_user_uuids():
     return uuids
 
 
+def _is_med_due_today(med, today):
+    """Check if a medication is due on the given date based on its frequency."""
+    from datetime import date as date_type
+
+    freq = med.get("frequency", "daily")
+
+    if freq == "as_needed":
+        return False
+
+    if freq == "specific_days":
+        current_day = today.strftime("%a").lower()
+        med_days = med.get("days_of_week", [])
+        if current_day not in med_days:
+            return False
+
+    if freq == "every_n_days":
+        start = med.get("start_date")
+        interval = med.get("interval_days")
+        if start and interval:
+            start_d = (
+                start
+                if isinstance(start, date_type)
+                else datetime.strptime(str(start), "%Y-%m-%d").date()
+            )
+            days_since = (today - start_d).days
+            if days_since < 0 or days_since % interval != 0:
+                return False
+        else:
+            return False
+
+    return True
+
+
 def _check_per_user_midnight_schedules():
     """Create daily adaptive schedules for each user when it's midnight in
     their timezone (within the poll window)."""
@@ -453,10 +497,13 @@ def _check_per_user_midnight_schedules():
         try:
             now = _user_now_for(user_uuid)
             if now.hour == 0 and now.minute < POLL_INTERVAL / 60:
+                today = now.date()
                 user_meds = postgres.select(
                     "medications", where={"user_uuid": user_uuid, "active": True}
                 )
                 for med in user_meds:
+                    if not _is_med_due_today(med, today):
+                        continue
                     times = med.get("times", [])
                     if times:
                         adaptive_meds.create_daily_schedule(
@@ -499,7 +546,7 @@ def daemon_loop():
             poll_callback()
         except Exception as e:
             logger.error(f"Poll callback error: {e}")
-        time.sleep(POLL_INTERVAL)
+        time_module.sleep(POLL_INTERVAL)
 
 
 if __name__ == "__main__":