refactor(会员): 会员档位目录移除无用的 sort_order，统一按 rank 排序

- module-runtime catalog.rs：RuntimeProfileMembershipPlanRecord 与种子目录去掉 sort_order，目录单测改为按 rank 断言
- module-runtime domain.rs/commands.rs：后台改价入参与构建函数去掉 sort_order
- spacetime-module profile.rs：profile_membership_plan 表结构去掉排序列，membership_plan_records 改按 rank 升序读取
- shared-contracts runtime.rs：ProfileMembershipPlanResponse 与 AdminUpsertProfileMembershipPlanRequest 移除 sortOrder
- spacetime-client：客户端签名、mapper 与 module_bindings 同步移除 sortOrder
- api-server runtime_profile.rs：响应构建与测试夹具去掉 sortOrder
- admin-web：AdminMembershipPlanPage 移除「排序」输入，档位列表改为按 rank 排序，契约类型同步
- packages/shared：ProfileMembershipPlanRecord 去掉 sortOrder，充值弹层改为直接沿用后端的 rank 顺序
- docs：泥点三池与会员计费后端设计同步目录字段与后台能力说明

Co-authored-by: Junie <junie@jetbrains.com>

packages/shared/src/components/PlatformProfileRechargeModal/index.test.tsx

@@ -96,7 +96,6 @@ const STARTER_PLAN = {
   periodPoints: 400,
   modelAccess: 'basic' as const,
   concurrentJobLimit: 1,
-  sortOrder: 10,
   enabled: true,
 };
 
@@ -110,7 +109,6 @@ const PLUS_PLAN = {
   periodPoints: 1_150,
   modelAccess: 'full' as const,
   concurrentJobLimit: 3,
-  sortOrder: 20,
 };
 
 const MAX_PLAN = {
@@ -123,7 +121,6 @@ const MAX_PLAN = {
   periodPoints: 8_650,
   modelAccess: 'full' as const,
   concurrentJobLimit: 128,
-  sortOrder: 40,
 };
 
 vi.mock('qrcode', () => ({

packages/shared/src/components/PlatformProfileRechargeModal/index.tsx

@@ -1216,12 +1216,12 @@ export function PlatformProfileRechargeModal({
   const currentBalance = resolveProfileMudPointDisplayTotal(
     center?.mudPointBalance,
   );
+  // 后端目录已按 rank 升序返回，这里只过滤不可购买与占位档。
   const membershipPlans = useMemo(
     () =>
-      (center?.membershipPlans ?? [])
-        .filter((plan) => plan.enabled && plan.plan !== 'normal')
-        .slice()
-        .sort((left, right) => left.sortOrder - right.sortOrder),
+      (center?.membershipPlans ?? []).filter(
+        (plan) => plan.enabled && plan.plan !== 'normal',
+      ),
     [center?.membershipPlans],
   );
   const pointProducts = useMemo(

packages/shared/src/contracts/runtime.ts

@@ -163,7 +163,6 @@ export type ProfileMembershipPlanRecord = {
   modelAccess: ProfileMembershipModelAccess;
   /** 并发上限；`128` 表示不设上限。 */
   concurrentJobLimit: number;
-  sortOrder: number;
   enabled: boolean;
 };