feat: 首次登录引导与注册修复

src/auth.ts

@@ -49,13 +49,37 @@ export const { handlers, auth, signIn, signOut } = NextAuth({
       if (user) {
         token.id = (user as { id: string }).id
         token.role = (user as { role?: string }).role ?? "student"
+        token.name = (user as { name?: string }).name
       }
+
+      const userId = String(token.id ?? "").trim()
+      if (userId) {
+        const [{ eq }, { db }, { users }] = await Promise.all([
+          import("drizzle-orm"),
+          import("@/shared/db"),
+          import("@/shared/db/schema"),
+        ])
+
+        const fresh = await db.query.users.findFirst({
+          where: eq(users.id, userId),
+          columns: { role: true, name: true },
+        })
+
+        if (fresh) {
+          token.role = fresh.role ?? token.role ?? "student"
+          token.name = fresh.name ?? token.name
+        }
+      }
+
       return token
     },
     session: async ({ session, token }) => {
       if (session.user) {
         session.user.id = String(token.id ?? "")
         session.user.role = String(token.role ?? "student")
+        if (typeof token.name === "string") {
+          session.user.name = token.name
+        }
       }
       return session
     },