Phase 3 (fusion_accounting_assets) changed list_assets() to return
{count, total, assets} dict instead of a flat list — consistent with
bank_rec.list_unreconciled, reports.run_report, followup.list_overdue.
The pre-existing test in fusion_accounting_ai still asserted isinstance(rows, list)
and was failing on every run since Phase 3 merge. Updated to assert dict shape.
Made-with: Cursor
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