feat: 分站套餐价格改为人民币存储，额度输入简化为人民币金额

- 后端: DistributorPackage.Price/OriginalPrice 改为存 CNY
- 后端: SubscribePackage 购买时自动 CNY→USD 转换再算 quota
- 前端: 套餐表单额度从 quota 单位改为人民币金额输入
- dist-site: 7个主题 + Packages页面去掉 price*rate 转换

计费逻辑不变：CNY/汇率=USD，USD*QuotaPerUnit=quota

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/pages/Packages.jsx

@@ -206,9 +206,9 @@ export default function Packages() {
                 {/* Price */}
                 <div className="mb-6">
                   <div className="flex items-baseline gap-2">
-                    <span className="text-4xl font-bold text-page">{symbol}{(Number(pkg.price) * rate).toFixed(2)}</span>
+                    <span className="text-4xl font-bold text-page">{symbol}{Number(pkg.price).toFixed(2)}</span>
                     {pkg.original_price > 0 && pkg.original_price > pkg.price && (
-                      <span className="text-lg text-page-muted line-through">{symbol}{(Number(pkg.original_price) * rate).toFixed(2)}</span>
+                      <span className="text-lg text-page-muted line-through">{symbol}{Number(pkg.original_price).toFixed(2)}</span>
                     )}
                   </div>
                   {pkg.duration > 0 && (

src/themes/claude/Home.jsx

@@ -160,9 +160,9 @@ export default function ClaudeHome() {
                   <h3 className="text-base font-semibold text-[#3D3024]">{pkg.name}</h3>
                   {pkg.description && <p className="text-sm text-[#8B7D6E] mt-1">{pkg.description}</p>}
                   <div className="mt-auto pt-6">
-                    <span className="text-3xl font-bold text-[#3D3024]">{symbol}{(Number(pkg.price) * rate).toFixed(2)}</span>
+                    <span className="text-3xl font-bold text-[#3D3024]">{symbol}{Number(pkg.price).toFixed(2)}</span>
                     {pkg.original_price > pkg.price && (
-                      <span className="text-sm text-[#8B7D6E] line-through ml-2">{symbol}{(Number(pkg.original_price) * rate).toFixed(2)}</span>
+                      <span className="text-sm text-[#8B7D6E] line-through ml-2">{symbol}{Number(pkg.original_price).toFixed(2)}</span>
                     )}
                     {pkg.duration > 0 && <p className="text-xs text-[#8B7D6E] mt-1">{t('home.days', { count: pkg.duration })}</p>}
                   </div>

src/themes/clean/Home.jsx

@@ -173,9 +173,9 @@ export default function CleanHome() {
                   <h3 className="text-base font-semibold text-gray-900">{pkg.name}</h3>
                   {pkg.description && <p className="text-sm text-gray-500 mt-1">{pkg.description}</p>}
                   <div className="mt-auto pt-6">
-                    <span className="text-3xl font-bold text-gray-900">{symbol}{(Number(pkg.price) * rate).toFixed(2)}</span>
+                    <span className="text-3xl font-bold text-gray-900">{symbol}{Number(pkg.price).toFixed(2)}</span>
                     {pkg.original_price > pkg.price && (
-                      <span className="text-sm text-gray-500 line-through ml-2">{symbol}{(Number(pkg.original_price) * rate).toFixed(2)}</span>
+                      <span className="text-sm text-gray-500 line-through ml-2">{symbol}{Number(pkg.original_price).toFixed(2)}</span>
                     )}
                     {pkg.duration > 0 && <p className="text-xs text-gray-500 mt-1">{t('home.days', { count: pkg.duration })}</p>}
                   </div>

src/themes/corporate/Home.jsx

@@ -172,9 +172,9 @@ export default function CorporateHome() {
                   <h3 className="text-base font-semibold text-slate-900">{pkg.name}</h3>
                   {pkg.description && <p className="text-sm text-slate-500 mt-1">{pkg.description}</p>}
                   <div className="mt-auto pt-6">
-                    <span className="text-3xl font-bold text-slate-900">{symbol}{(Number(pkg.price) * rate).toFixed(2)}</span>
+                    <span className="text-3xl font-bold text-slate-900">{symbol}{Number(pkg.price).toFixed(2)}</span>
                     {pkg.original_price > pkg.price && (
-                      <span className="text-sm text-slate-500 line-through ml-2">{symbol}{(Number(pkg.original_price) * rate).toFixed(2)}</span>
+                      <span className="text-sm text-slate-500 line-through ml-2">{symbol}{Number(pkg.original_price).toFixed(2)}</span>
                     )}
                     {pkg.duration > 0 && <p className="text-xs text-slate-500 mt-1">{t('home.days', { count: pkg.duration })}</p>}
                   </div>

src/themes/dark/Home.jsx

@@ -163,9 +163,9 @@ export default function DarkHome() {
                   <h3 className="text-base font-semibold text-white">{pkg.name}</h3>
                   {pkg.description && <p className="text-sm text-neutral-500 mt-1">{pkg.description}</p>}
                   <div className="mt-auto pt-6">
-                    <span className="text-3xl font-bold text-white">{symbol}{(Number(pkg.price) * rate).toFixed(2)}</span>
+                    <span className="text-3xl font-bold text-white">{symbol}{Number(pkg.price).toFixed(2)}</span>
                     {pkg.original_price > pkg.price && (
-                      <span className="text-sm text-neutral-600 line-through ml-2">{symbol}{(Number(pkg.original_price) * rate).toFixed(2)}</span>
+                      <span className="text-sm text-neutral-600 line-through ml-2">{symbol}{Number(pkg.original_price).toFixed(2)}</span>
                     )}
                     {pkg.duration > 0 && <p className="text-xs text-neutral-600 mt-1">{t('home.days', { count: pkg.duration })}</p>}
                   </div>

src/themes/default/Home.jsx

@@ -172,9 +172,9 @@ export default function DefaultHome() {
                   <h3 className="text-base font-semibold text-white">{pkg.name}</h3>
                   {pkg.description && <p className="text-sm text-neutral-500 mt-1">{pkg.description}</p>}
                   <div className="mt-auto pt-6">
-                    <span className="text-3xl font-bold text-white">{symbol}{(Number(pkg.price) * rate).toFixed(2)}</span>
+                    <span className="text-3xl font-bold text-white">{symbol}{Number(pkg.price).toFixed(2)}</span>
                     {pkg.original_price > pkg.price && (
-                      <span className="text-sm text-neutral-600 line-through ml-2">{symbol}{(Number(pkg.original_price) * rate).toFixed(2)}</span>
+                      <span className="text-sm text-neutral-600 line-through ml-2">{symbol}{Number(pkg.original_price).toFixed(2)}</span>
                     )}
                     {pkg.duration > 0 && <p className="text-xs text-neutral-600 mt-1">{t('home.days', { count: pkg.duration })}</p>}
                   </div>

src/themes/minimal/Home.jsx

@@ -155,9 +155,9 @@ export default function MinimalHome() {
                   <h3 className="text-base font-semibold text-white">{pkg.name}</h3>
                   {pkg.description && <p className="text-sm text-neutral-500 mt-1">{pkg.description}</p>}
                   <div className="mt-auto pt-6">
-                    <span className="text-3xl font-bold text-white">{symbol}{(Number(pkg.price) * rate).toFixed(2)}</span>
+                    <span className="text-3xl font-bold text-white">{symbol}{Number(pkg.price).toFixed(2)}</span>
                     {pkg.original_price > pkg.price && (
-                      <span className="text-sm text-neutral-600 line-through ml-2">{symbol}{(Number(pkg.original_price) * rate).toFixed(2)}</span>
+                      <span className="text-sm text-neutral-600 line-through ml-2">{symbol}{Number(pkg.original_price).toFixed(2)}</span>
                     )}
                     {pkg.duration > 0 && <p className="text-xs text-neutral-600 mt-1">{t('home.days', { count: pkg.duration })}</p>}
                   </div>

src/themes/starter/Home.jsx

@@ -178,9 +178,9 @@ export default function StarterHome() {
                   <h3 className="text-base font-semibold text-white">{pkg.name}</h3>
                   {pkg.description && <p className="text-sm text-neutral-500 mt-1">{pkg.description}</p>}
                   <div className="mt-auto pt-6">
-                    <span className="text-3xl font-bold text-white">{symbol}{(Number(pkg.price) * rate).toFixed(2)}</span>
+                    <span className="text-3xl font-bold text-white">{symbol}{Number(pkg.price).toFixed(2)}</span>
                     {pkg.original_price > pkg.price && (
-                      <span className="text-sm text-neutral-600 line-through ml-2">{symbol}{(Number(pkg.original_price) * rate).toFixed(2)}</span>
+                      <span className="text-sm text-neutral-600 line-through ml-2">{symbol}{Number(pkg.original_price).toFixed(2)}</span>
                     )}
                     {pkg.duration > 0 && <p className="text-xs text-neutral-600 mt-1">{t('home.days', { count: pkg.duration })}</p>}
                   </div>