Revert "fix(events): tolerate corrupt end_dt + reject end<=start at write time"

This reverts commit 94b169f31c.

src/fabledassistant/services/tools/calendar.py

@@ -213,25 +213,22 @@ async def create_event_tool(*, user_id, arguments, **_ctx):
         proj = await resolve_project(user_id, project_name)
         if proj:
             project_id = proj.id
-    try:
-        event = await events_create_event(
-            user_id=user_id,
-            title=arguments.get("title", "Untitled Event"),
-            start_dt=start_dt,
-            end_dt=end_dt,
-            all_day=all_day,
-            description=arguments.get("description") or "",
-            location=arguments.get("location") or "",
-            color=arguments.get("color") or "",
-            recurrence=arguments.get("recurrence"),
-            project_id=project_id,
-            duration=arguments.get("duration"),
-            reminder_minutes=arguments.get("reminder_minutes"),
-            attendees=arguments.get("attendees"),
-            calendar_name=arguments.get("calendar_name"),
-        )
-    except ValueError as exc:
-        return {"success": False, "error": str(exc)}
+    event = await events_create_event(
+        user_id=user_id,
+        title=arguments.get("title", "Untitled Event"),
+        start_dt=start_dt,
+        end_dt=end_dt,
+        all_day=all_day,
+        description=arguments.get("description") or "",
+        location=arguments.get("location") or "",
+        color=arguments.get("color") or "",
+        recurrence=arguments.get("recurrence"),
+        project_id=project_id,
+        duration=arguments.get("duration"),
+        reminder_minutes=arguments.get("reminder_minutes"),
+        attendees=arguments.get("attendees"),
+        calendar_name=arguments.get("calendar_name"),
+    )
     return {"success": True, "type": "event", "data": event.to_dict()}
 
 
@@ -363,10 +360,7 @@ async def update_event_tool(*, user_id, arguments, **_ctx):
             return {"success": False, "error": f"Invalid end: {exc}"}
         if end_dt is not None:
             fields["end_dt"] = end_dt
-    try:
-        updated = await events_update_event(user_id=user_id, event_id=event_to_update.id, **fields)
-    except ValueError as exc:
-        return {"success": False, "error": str(exc)}
+    updated = await events_update_event(user_id=user_id, event_id=event_to_update.id, **fields)
     if updated is None:
         return {"success": False, "error": "Event not found or update failed."}
     return {"success": True, "type": "event_updated", "data": updated.to_dict()}