diff --git a/server-rs/crates/module-runtime/src/commands.rs b/server-rs/crates/module-runtime/src/commands.rs
index 02d11db91..22765aa15 100644
--- a/server-rs/crates/module-runtime/src/commands.rs
+++ b/server-rs/crates/module-runtime/src/commands.rs
@@ -410,12 +410,12 @@ pub fn build_runtime_profile_recharge_product_admin_upsert_input(
                 return Err(RuntimeProfileFieldError::InvalidRechargeProductPoints);
             }
             if duration_days != 0 || bonus_points != 0 {
-                return Err(RuntimeProfileFieldError::InvalidRechargeProductTier);
+                return Err(RuntimeProfileFieldError::InvalidRechargeProductFields);
             }
         }
         // 中文注释：会员商品已迁移到 profile_membership_plan 目录，这里只保留泥点商品。
         RuntimeProfileRechargeProductKind::Membership => {
-            return Err(RuntimeProfileFieldError::InvalidRechargeProductTier);
+            return Err(RuntimeProfileFieldError::InvalidRechargeProductKind);
         }
     }
 
@@ -445,7 +445,8 @@ pub fn build_runtime_profile_membership_plan_admin_list_input(
 
 /// 后台会员档位改价 / 改权益入参校验。
 ///
-/// `normal` 是不可购买的非会员占位档位：它的价格与额度没有意义，一律按 0 落库。
+/// `normal` 是不可购买的非会员占位档位：价格与每期泥点一律按 0 落库；
+/// 并发上限与模型权限固定为目录种子里的非会员基线，后台不能改。
 #[allow(clippy::too_many_arguments)]
 pub fn build_runtime_profile_membership_plan_admin_upsert_input(
     admin_user_id: String,
@@ -465,6 +466,9 @@ pub fn build_runtime_profile_membership_plan_admin_upsert_input(
         normalize_required_string(title).ok_or(RuntimeProfileFieldError::MissingProductTitle)?;
 
     if !plan.is_purchasable() {
+        // 中文注释：非会员基线固定取自目录种子，避免后台把「非会员」改成 0 并发或「不限并发」。
+        let baseline = crate::resolve_runtime_profile_membership_plan_row(plan)
+            .ok_or(RuntimeProfileFieldError::InvalidMembershipPlan)?;
         return Ok(RuntimeProfileMembershipPlanAdminUpsertInput {
             admin_user_id,
             plan,
@@ -472,15 +476,19 @@ pub fn build_runtime_profile_membership_plan_admin_upsert_input(
             month_price_cents: 0,
             year_price_cents: 0,
             period_points: 0,
-            model_access,
-            concurrent_job_limit,
+            model_access: baseline.model_access,
+            concurrent_job_limit: baseline.concurrent_job_limit,
             enabled: false,
             sort_order,
             updated_at_micros,
         });
     }
 
-    if month_price_cents == 0 || year_price_cents == 0 || concurrent_job_limit == 0 {
+    if month_price_cents == 0
+        || year_price_cents == 0
+        || period_points == 0
+        || concurrent_job_limit == 0
+    {
         return Err(RuntimeProfileFieldError::InvalidMembershipPlan);
     }
 
diff --git a/server-rs/crates/module-runtime/src/errors.rs b/server-rs/crates/module-runtime/src/errors.rs
index f282bd0c4..99e43f685 100644
--- a/server-rs/crates/module-runtime/src/errors.rs
+++ b/server-rs/crates/module-runtime/src/errors.rs
@@ -90,7 +90,7 @@ pub enum RuntimeProfileFieldError {
     InvalidRechargeProductPoints,
     InvalidRechargeProductDuration,
     InvalidRechargeProductKind,
-    InvalidRechargeProductTier,
+    InvalidRechargeProductFields,
     InvalidMembershipPlan,
     MissingPaymentChannel,
     #[cfg(any())]
@@ -185,8 +185,12 @@ impl std::fmt::Display for RuntimeProfileFieldError {
             Self::InvalidRechargeProductDuration => {
                 f.write_str("会员商品 duration_days 必须大于 0")
             }
-            Self::InvalidRechargeProductKind => f.write_str("充值商品类型无效"),
-            Self::InvalidRechargeProductTier => f.write_str("会员商品 tier 无效"),
+            Self::InvalidRechargeProductKind => {
+                f.write_str("充值商品类型无效：会员商品已迁移到会员档位目录")
+            }
+            Self::InvalidRechargeProductFields => {
+                f.write_str("泥点商品不支持 duration_days 与 bonus_points 字段")
+            }
             Self::InvalidMembershipPlan => {
                 f.write_str("会员档位配置无效：月价、年价、每期泥点与并发上限必须有效")
             }