Door panel view when the school is closed (weekend, national holiday, semester break): a neutral "Holiday" status + a "Back in session" line — not a misleading "Available". Two schedule-column treatments are under review — open them to compare (each page has a Light/Dark toggle + Weekend/National/Semester).
The whole day becomes a single "Holiday" block on the same timeline rail (faint 07–17 hour scale). Most consistent with the panel's schedule metaphor + easy to compose with events. (Recommended — this is the treatment deployed at /mockup/panel.)
The schedule column becomes a centered line-art illustration + "No classes today" + a "Back in session" box. More minimal/elegant, with generous whitespace.
The Holiday state (treatment v1) is now a native scene in the production panel mockup — alongside Available / In Use / Exam / Signage. Open the panel, then click the "● Holiday" scene button in the bottom bar.