`status()` walks `col.get(include=["metadatas"])` and buckets each drawer
into a `wing_rooms[wing][room]` histogram. The same ChromaDB return shape
fixed in the search print path — `None` entries in the `metadatas` list
for drawers with no stored metadata — crashes the status command with:
AttributeError: 'NoneType' object has no attribute 'get'
Applies the matching ``m = m or {}`` guard so None-metadata drawers roll
up under the existing `?/?` fallback bucket instead of killing the
command mid-tally. Reproduced on a 135K-drawer palace where two drawers
had `metadata=None`; both now show under `WING: ? / ROOM: ?` in the
tally while the command prints the full histogram as designed.
Adds a regression test that feeds `status()` a fake collection whose
`get()` returns a `None` in the middle of the metadatas list and asserts
both the fallback bucket and the real wing render.
jp
feba7e8043