Return category-level metadata fields from ScheduleExceptionOutputWrapper

[Copilot]

Flow users had no visibility into computed category ranges and allocations after invocation — only scheduleExceptions and errorMessage were returned.

Changes

• ScheduleExceptionOutputWrapper — added 16 optional @InvocableVariable fields (4 per category: cat1/cat2/cat3/post):

  • {cat}Start, {cat}End — actual computed date range
  • {cat}HoursPerDay — computed hours per working day
  • {cat}UsableDays — workdays in range after excluding holidays/onsite gap

• processSingleSchedule — populates the above fields from already-computed locals before returning. Error paths are unchanged; fields remain null on error (optional by design).

• Tests — two new cases: one asserting all metadata fields are populated and consistent on a valid run, one asserting they are all null when an error is returned.

ScheduleExceptionOutputWrapper w = results[0];
// now available to Flow
w.cat1Start;        // Date
w.cat1End;          // Date
w.cat1HoursPerDay;  // Decimal
w.cat1UsableDays;   // Integer
// …cat2, cat3, post equivalents