Sorting by decay rate, not by importance
The test for routine is whether skipping it once produces a visible or hygienic problem. Amenities, waste, circulation floors, kitchen surfaces and touchpoints qualify because ordinary use degrades them between every visit. Important tasks that decay slowly do not belong there, because putting them in routine dilutes the visit without improving the building. A routine list that fits the visit is also the only one a client can meaningfully inspect, because everything on it should be complete every time.
Periodic is for the slow-decay items: carpet extraction, hard-floor maintenance, high-level dusting, detailed glass, vent faces, upholstery and wall detail. Each needs a stated cycle rather than a mention, because a periodic item without a date is functionally an excluded one that nobody has admitted to excluding. The cycle also gives the site something to schedule around, which matters in a tower where a floor has to be quiet for the work to happen at all.
