Fix missing User table by running migrations before app start

Add a `prestart` script to package.json that runs `prisma migrate deploy`
before `next start`, ensuring all database tables exist. Also wrap the
informational User lookup in getNonce with a try/catch so nonce generation
doesn't fail if the User table is temporarily unavailable.

https://claude.ai/code/session_01Y4mDygMY7HNHAJz7GUs5dz

Author: claude

package.json

@@ -14,6 +14,7 @@
     "dev": "next dev",
     "postinstall": "prisma generate",
     "lint": "next lint",
+    "prestart": "prisma migrate deploy",
     "start": "next start",
     "test": "jest",
     "test:watch": "jest --watch",

src/pages/api/v1/getNonce.ts

@@ -30,14 +30,18 @@ export default async function handler(
 
       // Log whether the address has a corresponding user, but don't block nonce issuance.
       // This allows first-time wallet connections to authorize via nonce signing.
-      const user = await db.user.findUnique({ where: { address } });
-      if (!user) {
-        console.warn("[getNonce] Address has no User record yet:", address);
-      } else {
-        console.debug("[getNonce] Found User for address:", {
-          address,
-          userId: user.id,
-        });
+      try {
+        const user = await db.user.findUnique({ where: { address } });
+        if (!user) {
+          console.warn("[getNonce] Address has no User record yet:", address);
+        } else {
+          console.debug("[getNonce] Found User for address:", {
+            address,
+            userId: user.id,
+          });
+        }
+      } catch (userLookupError) {
+        console.warn("[getNonce] User lookup failed (table may not exist yet):", (userLookupError as Error).message);
       }
 
       // Check if a nonce already exists for this address in the database