`col.query(...)` can return `None` entries in the inner ``metadatas`` list
for drawers whose metadata was never set (older palaces, rows written
outside the normal mining path). The CLI `search()` function would render
earlier results successfully and then crash mid-loop with:
AttributeError: 'NoneType' object has no attribute 'get'
at ``searcher.py:286`` — ``meta.get("source_file", "?")``. The user sees
partial output followed by a traceback, with no indication of which
drawers rendered OK and which were skipped.
Guard with ``meta = meta or {}`` inside the loop so entries with missing
metadata fall back to the existing ``"?"`` defaults instead of crashing,
matching the hit dict assembly in ``search_memories()`` which already
uses ``meta.get("wing", "unknown")`` etc. against the same data.
Adds a regression test that mocks a ChromaDB result with a ``None``
metadata entry in the middle of the inner list and asserts both result
blocks render to stdout.
jp
a3c778210b