fix(claim): 领取页展示游戏角色名，并说明乐玩免扫码场景

持久化 affiliate_dash roleName/gameChannel；免扫码授权时明确提示，有绑定链接时提交前仍可显示二维码。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/backend/src/services/claim/kuaishou-cloud-claim-service.ts

@@ -224,6 +224,7 @@ async function submitAffiliateDashClaimUid(
     orderNo: flow.orderNo,
     gameAccount: expectedUid,
   })
+  const alreadyBound = Boolean(bindResult.bound)
   const nextFlow = {
     ...flow,
     bindUuid: bindResult.bindUuid,
@@ -231,10 +232,13 @@ async function submitAffiliateDashClaimUid(
     qrUrl: bindResult.qrUrl,
     gameAccount: expectedUid,
     expectedGameAccount: expectedUid,
-    // 重新绑定：清空旧绑定状态，等待用户用新账号扫码完成新绑定。
-    bound: false,
-    boundAccount: '',
-    gameChannel: '',
+    // 乐玩「已授权免扫码」会直接 bound=true；否则清空等待扫码。
+    bound: alreadyBound,
+    boundAccount: alreadyBound
+      ? String(bindResult.gameAccount || expectedUid || '').trim()
+      : '',
+    roleName: alreadyBound ? String(bindResult.roleName || '').trim() : '',
+    gameChannel: alreadyBound ? String(bindResult.gameChannel || '').trim() : '',
     bindMismatch: false,
   }
 
@@ -516,6 +520,7 @@ function clearAffiliateDashBindSnapshot(
     expectedGameAccount: gameAccount || flow.expectedGameAccount,
     bound: false,
     boundAccount: '',
+    roleName: '',
     gameChannel: '',
     bindMismatch: false,
   }
@@ -570,7 +575,12 @@ async function refreshAffiliateDashBindState(task: TaskRow): Promise<TaskRow | n
       expectedGameAccount: expectedGameAccount || flow.expectedGameAccount,
       bound: result.bound,
       boundAccount,
-      gameChannel: result.bound ? result.gameChannel || flow.gameChannel : '',
+      roleName: result.bound
+        ? String(result.roleName || flow.roleName || '').trim()
+        : flow.roleName,
+      gameChannel: result.bound
+        ? String(result.gameChannel || flow.gameChannel || '').trim()
+        : flow.gameChannel,
       bindMismatch: Boolean(result.mismatch) || localMismatch,
     }
     const now = nowIso()