Create a local availability view from this permitted interval file.
Preserve anonymous IDs, source dates, named zones and interval states.
Show unknown separately from available and unavailable.
Display overlaps for the same ID without double-counting them.
Use [start-inclusive, end-exclusive] boundaries as specified in the source.
Keep source intervals inspectable. Do not infer skills, productivity,
health, staffing recommendations or total capacity from this display.
Return the actual local files and an explained source-to-lane mapping.

---

Check the actual view against the supplied interval rules.
Show the expected and displayed state for an overlap, an unknown slot
and an exact end boundary. Confirm every displayed ID and interval
comes from the source. Explain any merged display and preserve the
original interval references. Do not convert missing information to free time.

---

The source interval for [anonymous ID/time] is unknown, but the view
shows available. Restore the unknown state and its visible legend.
Keep neighbouring supplied intervals unchanged. Check the unknown case
and an overlapping available case, then return the revised files with
the affected source IDs listed. Do not assign a person to a task.
