Phase7b: Manual Invoice

src/lib/billing-i18n.ts

@@ -153,5 +153,21 @@ export function formatLineDescription(
       }[L];
       return reason ? `${base}: ${reason}` : base;
     }
+
+    // Phase 8: custom invoice lines. The description is what the
+    // admin typed in the editor — return it verbatim (no template,
+    // no locale-specific formatting). billing.ts persists the
+    // already-trimmed admin input into invoice_lines.description.
+    case "custom_line": {
+      const dRaw = (m as Record<string, unknown>)["description"];
+      if (typeof dRaw === "string" && dRaw.trim().length > 0) return dRaw;
+      // Fallback: the description column on the row itself. The
+      // PDF renderer hands us the line so it can read it directly
+      // — see how billing-pdf invokes formatLineDescription.
+      const onRow = (line as unknown as { description?: string }).description;
+      return onRow && onRow.trim().length > 0
+        ? onRow
+        : { de: "Leistung", en: "Service", fr: "Service", it: "Servizio" }[L];
+    }
   }
 }