feat(theme): 添加超小字体变量并优化预览页面样式

- 在CustomTheme中添加--text-xxs字体变量用于超小字体显示
- 为nutuiTabbarTextFontSize设置使用新的超小字体变量
- 修复购买流程中生产预览页面的按钮样式问题
- 修复购买流程中市场预览页面的按钮样式问题
- 优化预览页面按钮的类名配置，移除冗余样式定义
- 调整购买状态判断逻辑，允许预览状态在最后一步时显示

packages/app-client/src/components/biz/CustomTheme.tsx

@@ -27,6 +27,7 @@ export function CustomTheme(props: CustomThemeProps) {
       style={{
         // @ts-ignore
         "--scale-factor": scaleFactor,
+        "--text-xxs": `calc(${Taro.pxTransform(10 * 2)} * var(--scale-factor))`,
         "--text-xs": `calc(${Taro.pxTransform(12 * 2)} * var(--scale-factor))`,
         "--text-sm": `calc(${Taro.pxTransform(14 * 2)} * var(--scale-factor))`,
         "--text-base": `calc(${Taro.pxTransform(16 * 2)} * var(--scale-factor))`,
@@ -98,6 +99,7 @@ export function CustomTheme(props: CustomThemeProps) {
 
           // --nutui-tabbar-height
           nutuiTabbarHeight: "calc(92rpx * var(--scale-factor))",
+          nutuiTabbarTextFontSize: "var(--text-xxs)",
         }}
       >
         {children}

packages/app-client/src/constant/purchase.ts

@@ -72,11 +72,11 @@ const supplierSlug = {
 
 const isPreview = (purchaseVO: BusinessAPI.OrderVO) => {
   if (purchaseVO.type === "PRODUCTION_PURCHASE") {
-    return purchaseVO.active === madeSteps.length;
+    return purchaseVO.active >= madeSteps.length - 1;
   }
 
   if (purchaseVO.type === "MARKET_PURCHASE") {
-    return purchaseVO.active === marketSteps.length;
+    return purchaseVO.active >= marketSteps.length - 1;
   }
 
   return false;

packages/app-client/src/pages/purchase/made/preview.tsx

@@ -53,7 +53,6 @@ export default hocAuth(function Page(props: CommonComponent) {
               block
               type={"default"}
               size={"large"}
-              className="flex-1 bg-gray-200 text-gray-700"
               onClick={() => {
                 Taro.switchTab({
                   url: buildUrl("/pages/main/index/index"),
@@ -70,7 +69,6 @@ export default hocAuth(function Page(props: CommonComponent) {
                   block
                   type={"default"}
                   size={"large"}
-                  className="flex-1 bg-gray-200 text-gray-700"
                   onClick={() => {
                     Taro.redirectTo({
                       url: buildUrl("/pages/purchase/made/create", {

packages/app-client/src/pages/purchase/market/preview.tsx

@@ -53,7 +53,6 @@ export default hocAuth(function Page(props: CommonComponent) {
               block
               type={"default"}
               size={"large"}
-              className="flex-1 bg-gray-200 text-gray-700"
               onClick={() => {
                 Taro.switchTab({
                   url: buildUrl("/pages/main/index/index"),
@@ -70,7 +69,6 @@ export default hocAuth(function Page(props: CommonComponent) {
                   block
                   type={"default"}
                   size={"large"}
-                  className="flex-1 bg-gray-200 text-gray-700"
                   onClick={() => {
                     Taro.redirectTo({
                       url: buildUrl("/pages/purchase/market/create", {