feat(invoices): auto income entry on 'paid' status

Marking an invoice as paid now creates a finance_entry (type=income) for
the customer with amount = invoice.total, linked via invoiceId. Reverting
status removes the entry. Idempotent: re-saving while already paid keeps
the existing entry (resyncs amount if invoice total changed in the
meantime).

- syncPaymentEntry(tenantId, userId, invoice) helper:
  * status === 'paid': create entry if none exists; otherwise update
    amount to match current invoice.total.
  * status !== 'paid': delete any income entries linked to the invoice.
  * Best-effort — failures are swallowed so the invoice mutation always
    succeeds even if Appwrite hiccups on the finance write.
  * Each create/delete writes an audit row tagged auto: 'invoice_paid' /
    'invoice_unpaid' so we can trace later.
- updateInvoiceAction now calls syncPaymentEntry after persisting.
- recomputeTotals (run on every item add/update/delete) also re-syncs
  the linked entry's amount when the invoice is currently paid.
- deleteInvoiceAction now cascade-deletes any linked finance_entries in
  addition to items.
- /invoices and /invoices/[id] both revalidate /finance after writes.

UI:
- Invoice form shows a hint under the status select explaining the
  finance side effect.
- Finance table tags rows with a 'Faturadan' badge when invoiceId is
  set, so users can tell auto-generated entries apart from manual ones.

src/app/(dashboard)/finance/components/finance-client.tsx

@@ -191,14 +191,18 @@ export function FinanceClient({ entries, customers }: Props) {
       {
         accessorKey: "description",
         header: "Açıklama",
-        cell: ({ row }) =>
-          row.original.description ? (
-            <span className="text-muted-foreground line-clamp-1 max-w-[260px] text-sm">
-              {row.original.description}
+        cell: ({ row }) => (
+          <div className="flex max-w-[300px] items-center gap-2">
+            <span className="text-muted-foreground line-clamp-1 text-sm">
+              {row.original.description || "—"}
             </span>
-          ) : (
-            <span className="text-muted-foreground">—</span>
-          ),
+            {row.original.invoiceId && (
+              <Badge variant="outline" className="shrink-0 text-[10px]">
+                Faturadan
+              </Badge>
+            )}
+          </div>
+        ),
       },
       {
         id: "actions",

src/app/(dashboard)/finance/components/types.ts

@@ -10,6 +10,7 @@ export type FinanceRow = {
   customerId: string;
   customerName: string;
   paymentMethod: PaymentMethod;
+  invoiceId: string;
 };
 
 export type Customer = { id: string; name: string };

src/app/(dashboard)/finance/page.tsx

@@ -45,6 +45,7 @@ export default async function FinancePage() {
           customerId: e.customerId ?? "",
           customerName: e.customerId ? customerMap.get(e.customerId) ?? "" : "",
           paymentMethod: e.paymentMethod ?? "",
+          invoiceId: e.invoiceId ?? "",
         }))}
         customers={customers.map((c) => ({ id: c.$id, name: c.name }))}
       />

src/app/(dashboard)/invoices/components/invoice-form-sheet.tsx

@@ -144,6 +144,10 @@ export function InvoiceFormSheet({ open, onOpenChange, invoice, customers }: Pro
                   <SelectItem value="cancelled">İptal</SelectItem>
                 </SelectContent>
               </Select>
+              <p className="text-muted-foreground text-xs">
+                &ldquo;Ödendi&rdquo; seçildiğinde finans modülüne otomatik gelir kaydı düşer.
+                Durum geri alınırsa kayıt silinir.
+              </p>
             </div>
 
             <div className="grid gap-2">