demo seed change 2

shared/utils/demo_dates.py

@@ -36,18 +36,19 @@ def get_base_reference_date(session_created_at: Optional[datetime] = None) -> da
 
 def adjust_date_for_demo(
     original_date: Optional[datetime],
-    session_created_at: datetime,
-    base_reference_date: datetime = BASE_REFERENCE_DATE
+    session_created_at: datetime
 ) -> Optional[datetime]:
     """
     Adjust a date from seed data to be relative to demo session creation time.
-    
+
+    This function calculates the offset between the original date and BASE_REFERENCE_DATE,
+    then applies that offset to the session creation time.
+
     Example:
-        # Seed data created on 2025-12-13 06:00
-        # Stock expiration: 2025-12-28 06:00 (15 days from seed date)
+        # Original seed date: 2025-01-20 06:00 (BASE_REFERENCE + 5 days)
         # Demo session created: 2025-12-16 10:00
-        # Base reference: 2025-12-16 06:00
-        # Result: 2025-12-31 10:00 (15 days from session date)
+        # Offset: 5 days
+        # Result: 2025-12-21 10:00 (session + 5 days)
     """
     if original_date is None:
         return None
@@ -57,11 +58,9 @@ def adjust_date_for_demo(
         original_date = original_date.replace(tzinfo=timezone.utc)
     if session_created_at.tzinfo is None:
         session_created_at = session_created_at.replace(tzinfo=timezone.utc)
-    if base_reference_date.tzinfo is None:
-        base_reference_date = base_reference_date.replace(tzinfo=timezone.utc)
 
     # Calculate offset from base reference
-    offset = original_date - base_reference_date
+    offset = original_date - BASE_REFERENCE_DATE
 
     # Apply offset to session creation date
     return session_created_at + offset
@@ -182,29 +181,29 @@ def resolve_time_marker(
     if operator not in ['+', '-']:
         raise ValueError(f"Invalid operator in time marker: {time_marker}")
     
-    # Parse time components
-    days = 0
-    hours = 0
-    minutes = 0
-    
+    # Parse time components (supports decimals like 0.5d, 1.25h)
+    days = 0.0
+    hours = 0.0
+    minutes = 0.0
+
     if 'd' in value_part:
-        # Handle days
+        # Handle days (supports decimals like 0.5d = 12 hours)
         day_part, rest = value_part.split('d', 1)
-        days = int(day_part)
+        days = float(day_part)
         value_part = rest
-    
+
     if 'h' in value_part:
-        # Handle hours
+        # Handle hours (supports decimals like 1.5h = 1h30m)
         hour_part, rest = value_part.split('h', 1)
-        hours = int(hour_part)
+        hours = float(hour_part)
         value_part = rest
-    
+
     if 'm' in value_part:
-        # Handle minutes
+        # Handle minutes (supports decimals like 30.5m)
         minute_part = value_part.split('m', 1)[0]
-        minutes = int(minute_part)
-    
-    # Calculate offset
+        minutes = float(minute_part)
+
+    # Calculate offset using float values
     offset = timedelta(days=days, hours=hours, minutes=minutes)
     
     if operator == '+':