ee86d7aaf6
Default accounts: companies can now set a default Revenue, COGS, and Inventory account (Chart of Accounts -> "Default Accounts" card). Stored on CompanyPreferences (3 nullable FKs + migration). Used as the fallback when an item or invoice line leaves its account blank: - Invoice lines fall back to the default Revenue account, then to 4000. - New inventory/catalog items are pre-filled with the COGS/Inventory defaults, so the value is stored on the item and both live posting and the balance-recompute path stay consistent. Blank defaults = unchanged behavior, so nothing changes until a company opts in. Setting both COGS + Inventory enables perpetual-inventory COGS posting (warned in the UI and help docs). Help KB + Settings article updated. Also moves the "Fix QB Import Signs" tool off the company Chart of Accounts page (was CompanyAdmin-visible) to the SuperAdmin-only platform Company Details page, operating on the target company. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>