ScheduleStatusEnum::incomplete() and upcoming() return identical values

[jbrooksuk]

Priority: P3 (Medium - Plan to Fix)

Problem

In src/Enums/ScheduleStatusEnum.php:22-34, both incomplete() and upcoming() return [self::upcoming->value, self::in_progress->value].

This is either a copy-paste error or naming confusion. upcoming() logically should return only [self::upcoming->value].

Suggested Fix

Verify the intended semantics and deduplicate or correct the upcoming() method.