- Remove the orphaned "Default VAT rate %" from Business profile; the rates
are the Accounting VAT codes. The invoice/quote VAT picker (VatRateSelect)
is now code-only — options are exactly the Accounting output codes, no
free-text custom rate. Off-list legacy values on existing invoices are
preserved as a read-only "(not configured)" option so issued documents
aren't silently changed.
- Move VAT label + default hourly rate to the Accounting tab (new
AccountingProfileFields card; storage stays on business_profile, own save).
Wire vat_label onto the PDF VAT-line label via the issuer block (covers
invoices + quotes), falling back to the locale default when blank.
- Default currency stays on Business profile but becomes a normalizing
dropdown (an old free-text "chf" auto-selects "CHF"; unknown values
preserved). Add a moved-note callout. Strip the moved fields from the
Business-profile save so it can't clobber an Accounting-tab edit.