fix: store multisig chain id

Author: Tarnadas

api/prisma/migrations/20251023072951_add_multisig_chain_id/migration.sql

@@ -0,0 +1,2 @@
+-- AlterTable
+ALTER TABLE "Dex" ADD COLUMN     "multisigChainId" INTEGER;

api/prisma/schema.prisma

@@ -90,6 +90,7 @@ model Dex {
   privyLoginMethods    String?  // Comma-separated list of Privy login methods (email,passkey,twitter,google)
   isGraduated          Boolean  @default(false) // Whether the DEX has fully graduated
   graduationTxHash    String?  @unique // Transaction hash used for graduation (prevents reuse)
+  multisigChainId      Int?     // Chain ID where the multisig delegate signer link was established
   
   // Social Card Fields
   description          String?  // DEX description for social cards

api/src/routes/graduation.ts

@@ -44,6 +44,7 @@ const verifyTxSchema = z.object({
 
 const finalizeAdminWalletSchema = z.object({
   multisigAddress: z.string().optional(),
+  multisigChainId: z.number().optional(),
 });
 
 const graduationRoutes = new Hono();
@@ -404,7 +405,7 @@ graduationRoutes.post(
         );
       }
 
-      const { multisigAddress } = c.req.valid("json");
+      const { multisigAddress, multisigChainId } = c.req.valid("json");
       const addressToCheck = multisigAddress || user.address;
 
       const orderlyResponse = await fetch(
@@ -462,7 +463,10 @@ graduationRoutes.post(
 
       await prismaClient.dex.update({
         where: { userId },
-        data: { isGraduated: true },
+        data: {
+          isGraduated: true,
+          multisigChainId: multisigChainId || null,
+        },
       });
 
       return c.json({
@@ -543,6 +547,7 @@ graduationRoutes.get("/graduation-status", async c => {
       brokerId: dex.brokerId,
       isMultisig,
       multisigAddress,
+      multisigChainId: dex.multisigChainId,
     });
   } catch (error) {
     console.error("Error getting graduation status:", error);