第58批续24: PHP端信誉积分(credit_score)接收+管理界面

1. core.php: users表加 credit_score 列 INTEGER DEFAULT 100
2. api/sync.php: syncLogin INSERT加credit_score字段，bindValue默认100
3. api/credit.php(新): 信誉积分API
   - ensureCreditTables建credit_records/credit_rules表+users加列
   - 用户端: submit_good/submit_bad上报, my_score/user_score查积分, my_records查记录
   - 管理员: pending_list/approve/reject/approved_list审批流程, rules/update_rule规则管理
   - approve审批通过更新users.credit_score
4. player.php: 侧边栏加⭐信誉积分入口+renderCredit页面+creditSubmitFlow上报引导

core.php

@@ -1920,6 +1920,7 @@ function initTables($db, $side = null) {
             'last_login_ip'        => "TEXT DEFAULT ''",
             'frozen'               => "INTEGER DEFAULT 0",
             'freeze_token'         => "TEXT DEFAULT ''",
+            'credit_score'         => "INTEGER DEFAULT 100",
         ];
         foreach ($addCols as $col => $type) {
             if (!in_array($col, $userCols)) {