后台模型定价保存去掉版本比对：保存即整段覆盖

- shared-contracts：删掉 `EDITOR_GENERATION_PRICING_VERSION_CONFLICT` 常量
- spacetime-module：`EditorGenerationPricingConfigUpsertInput` 去掉期望版本字段，删掉版本比对方法与它的用例，入库只按请求内容整段覆盖
- spacetime-client：重新生成定价 upsert input 绑定（少一个字段），记录映射同步去掉版本
- api-server：进程内缓存去掉版本字段与 409 冲突错误，`editor_generation_pricing()` / `save_editor_generation_pricing()` 只返回配置本身，`EditorGenerationPricingStore::replace` 注释写明「只是缓存刷新、不做版本校验、不是拦截点」
- api-server admin/app：后台 GET 不再返回 `updatedAtMicros`，POST 不再读 `expectedUpdatedAtMicros`，删掉 409 映射与「旧版本被拒」用例，新增「连续保存两次以后一次为准」
- admin-web：定价类型去掉版本字段，保存请求不再回传版本，删掉 409 分支与「重新读取」提示及其用例
- docs：主规范新增「保存语义」段（整段覆盖、同时只有一个管理员在操作、缓存替换不是拦截点），后端数据契约、ADR 0005、里程碑 / 实施计划、决策记录与 pitfalls 同步为删除版本比对

apps/admin-web/src/api/adminApiTypes.ts

@@ -458,15 +458,16 @@ export interface EditorGenerationPricingConfigPayload {
   models: Record<string, EditorGenerationModelPricingPayload>;
   /** 后端尚未配置 3D 段时缺省；缺失即 3D 生成不可提交，后台也不能新建整段。 */
   model3d?: EditorGenerationModel3dPricingPayload | null;
-  /** 当前定价版本：保存时原样回传做乐观锁，冲突时后端返回 409。 */
-  updatedAtMicros: number;
 }
 
-/** 后台保存定价的请求体：`models` 与 3D 两段都必须显式给出，外加读取到的定价版本。 */
+/**
+ * 后台保存定价的请求体：`models` 与 3D 两段都必须显式给出。
+ *
+ * 不带定价版本：保存即整段覆盖，服务端不比对版本（后台同时只有一个管理员在操作）。
+ */
 export interface AdminUpsertEditorGenerationPricingRequest {
   models: Record<string, EditorGenerationModelPricingPayload>;
   model3d: EditorGenerationModel3dPricingPayload | null;
-  expectedUpdatedAtMicros: number;
 }
 
 export interface AdminEditorAssetListQuery {

apps/admin-web/src/pages/AdminEditorGenerationPricingPage.test.tsx

@@ -5,7 +5,6 @@ import userEvent from '@testing-library/user-event';
 import { beforeEach, expect, test, vi } from 'vitest';
 
 import {
-  AdminApiError,
   getAdminEditorGenerationPricing,
   upsertAdminEditorGenerationPricing,
 } from '../api/adminApiClient';
@@ -70,7 +69,6 @@ const pricing: EditorGenerationPricingConfigPayload = {
       },
     },
   },
-  updatedAtMicros: 1_700_000_000_000_000,
 };
 
 function savedPricing(
@@ -78,7 +76,6 @@ function savedPricing(
 ) {
   return {
     ...pricing,
-    updatedAtMicros: pricing.updatedAtMicros + 1,
     ...overrides,
   };
 }
@@ -163,7 +160,6 @@ test('3D 区块按端点渲染版本底价与加价项，并随保存回传整
     expect(upsertAdminEditorGenerationPricing).toHaveBeenCalledWith(
       'admin-token',
       expect.objectContaining({
-        expectedUpdatedAtMicros: pricing.updatedAtMicros,
         model3d: {
           textToModelPricing: expect.objectContaining({
             versionPrices: expect.objectContaining({
@@ -199,22 +195,6 @@ test('数值小于 1 时禁用保存并给出中文提示', async () => {
   expect(upsertAdminEditorGenerationPricing).not.toHaveBeenCalled();
 });
 
-test('保存遇到 409 时提示重新读取且不覆盖本地改动', async () => {
-  const user = userEvent.setup();
-  vi.mocked(upsertAdminEditorGenerationPricing).mockRejectedValue(
-    new AdminApiError({ message: '定价冲突', status: 409 }),
-  );
-  await renderPage();
-
-  await user.click(screen.getByRole('button', { name: '保存定价' }));
-  await user.click(screen.getByRole('button', { name: '确认' }));
-
-  expect(
-    await screen.findByText('定价已被其他人更新，请重新读取后再编辑保存'),
-  ).toBeTruthy();
-  expect(screen.getByRole('button', { name: '重新读取' })).toBeTruthy();
-});
-
 test('后端未配置 3D 段时给出提示并禁止保存', async () => {
   vi.mocked(getAdminEditorGenerationPricing).mockResolvedValue({
     ...pricing,

apps/admin-web/src/pages/AdminEditorGenerationPricingPage.tsx

@@ -3,7 +3,6 @@ import { FormEvent, useEffect, useState } from 'react';
 
 import {
   getAdminEditorGenerationPricing,
-  isAdminApiError,
   upsertAdminEditorGenerationPricing,
 } from '../api/adminApiClient';
 import type {
@@ -28,7 +27,6 @@ interface AdminEditorGenerationPricingPageProps {
 const emptyPricing: EditorGenerationPricingConfigPayload = {
   models: {},
   model3d: null,
-  updatedAtMicros: 0,
 };
 
 const unitLabels: Record<EditorGenerationPricingUnitPayload, string> = {
@@ -36,9 +34,6 @@ const unitLabels: Record<EditorGenerationPricingUnitPayload, string> = {
   perSecond: '按秒',
 };
 
-const PRICING_VERSION_CONFLICT_MESSAGE =
-  '定价已被其他人更新，请重新读取后再编辑保存';
-
 export function AdminEditorGenerationPricingPage({
   token,
   onUnauthorized,
@@ -48,7 +43,6 @@ export function AdminEditorGenerationPricingPage({
   const [isLoading, setIsLoading] = useState(false);
   const [isSaving, setIsSaving] = useState(false);
   const [errorMessage, setErrorMessage] = useState('');
-  const [isPricingVersionStale, setIsPricingVersionStale] = useState(false);
   const { confirmWrite, confirmDialog } = useAdminWriteConfirm();
 
   useEffect(() => {
@@ -59,7 +53,6 @@ export function AdminEditorGenerationPricingPage({
   async function refreshPricing() {
     setIsLoading(true);
     setErrorMessage('');
-    setIsPricingVersionStale(false);
     try {
       setPricing(await getAdminEditorGenerationPricing(token));
     } catch (error: unknown) {
@@ -75,7 +68,6 @@ export function AdminEditorGenerationPricingPage({
       return;
     }
     setErrorMessage('');
-    setIsPricingVersionStale(false);
     const confirmed = await confirmWrite({
       action: '保存模型定价',
       target: '图片画布生成',
@@ -93,11 +85,6 @@ export function AdminEditorGenerationPricingPage({
         ),
       );
     } catch (error: unknown) {
-      if (isAdminApiError(error) && error.status === 409) {
-        setErrorMessage(PRICING_VERSION_CONFLICT_MESSAGE);
-        setIsPricingVersionStale(true);
-        return;
-      }
       handlePageError(error, onUnauthorized, setErrorMessage);
     } finally {
       setIsSaving(false);
@@ -175,17 +162,6 @@ export function AdminEditorGenerationPricingPage({
       {errorMessage ? (
         <div className="admin-alert" role="status">
           {errorMessage}
-          {isPricingVersionStale ? (
-            <button
-              className="admin-secondary-button"
-              disabled={isLoading}
-              type="button"
-              onClick={refreshPricing}
-            >
-              <RefreshCcw size={17} aria-hidden="true" />
-              <span>重新读取</span>
-            </button>
-          ) : null}
         </div>
       ) : null}
 

apps/admin-web/src/pages/adminEditorGenerationPricing.test.ts

@@ -24,7 +24,6 @@ function pricingFixture(): EditorGenerationPricingConfigPayload {
         addOnPrices: { hdTexture: 8 },
       },
     },
-    updatedAtMicros: 42,
   };
 }
 
@@ -73,18 +72,16 @@ test('校验覆盖模型档位与 3D 两段的全部数值', () => {
   ]);
 });
 
-test('保存请求整段回传两段与定价版本，3D 缺失时回传 null', () => {
+test('保存请求整段回传两段且不带定价版本，3D 缺失时回传 null', () => {
   const pricing = pricingFixture();
   expect(buildAdminEditorGenerationPricingRequest(pricing)).toEqual({
     models: pricing.models,
     model3d: pricing.model3d,
-    expectedUpdatedAtMicros: 42,
   });
   expect(
     buildAdminEditorGenerationPricingRequest({ ...pricing, model3d: null }),
   ).toEqual({
     models: pricing.models,
     model3d: null,
-    expectedUpdatedAtMicros: 42,
   });
 });

apps/admin-web/src/pages/adminEditorGenerationPricing.ts

@@ -91,7 +91,7 @@ export function collectInvalidEditorGenerationPricingLabels(
 }
 
 /**
- * 组装保存请求：`models` 与 3D 两段整段回传，并带上读取时拿到的定价版本做乐观锁。
+ * 组装保存请求：`models` 与 3D 两段整段回传，不带定价版本（保存即覆盖，服务端不比对版本）。
  * 3D 段缺失时回传 `null`——服务端会以 400 拒绝，后台不允许在这里静默新建或丢弃整段。
  */
 export function buildAdminEditorGenerationPricingRequest(
@@ -100,7 +100,6 @@ export function buildAdminEditorGenerationPricingRequest(
   return {
     models: pricing.models,
     model3d: pricing.model3d ?? null,
-    expectedUpdatedAtMicros: pricing.updatedAtMicros,
   };
 }