Changes

Invoices list: filter bar (order source, fulfillment/non-fulfillment, payment state, amount range) and Documents / Accounting dropdown menus replacing the ten icon buttons

- SalesInvoiceListFilters: order-source select with counts, order-type and payment segmented controls, dual-thumb amount slider; filters the row data so the grand-total row and the shown counts match
- SalesInvoiceActionsMenu: Nuxt UI dropdowns with per-entry descriptions and progress labels; one busy key replaces the per-action booleans, upload/reset handlers share helpers
- so.get.ts expands C_Order.IsFulfillmentOrder; rows carry paymentStatus/overdueDays using the same rules as the cell badges
- Invoice cell renderers guard params.data (the grand-total row has none) — previously every row re-render threw and left the renderer columns blank
- invl_* translation keys (en/de/es)