Get check status badge color for UI

Returns check status options for display

Create minimal item record for stock opname initialization. Only stores item_id and collection_id - changes recorded later by librarian.

Record changes found by librarian during checking. Only stores the changed fields in JSONB.

Example changes: %{ "status" => "damaged", "condition" => "poor", "location" => "Storage Room", "availability" => "unavailable" }