polish: refine lite admin controls

src/app/(admin)/admin/plans/proxy-config-section.tsx

@@ -110,13 +110,11 @@ export function ProxyPricingFields({
   plan,
   pricingMode,
   setPricingMode,
-  allowTrafficTopup,
 }: {
   fieldId: FieldId;
   plan?: PlanFormValue;
   pricingMode: PlanPricingMode;
   setPricingMode: Dispatch<SetStateAction<PlanPricingMode>>;
-  allowTrafficTopup: boolean;
 }) {
   const pricingModeLabels: Record<string, string> = {
     TRAFFIC_SLIDER: "用户自选流量",
@@ -150,7 +148,7 @@ export function ProxyPricingFields({
               type="number"
               step="0.01"
               defaultValue={plan?.pricePerGb ?? ""}
-              placeholder="例如 0.5"
+              placeholder="0.5"
             />
           </div>
           <div>
@@ -160,7 +158,7 @@ export function ProxyPricingFields({
               name="minTrafficGb"
               type="number"
               defaultValue={plan?.minTrafficGb ?? ""}
-              placeholder="例如 10"
+              placeholder="10"
             />
           </div>
           <div>
@@ -170,7 +168,7 @@ export function ProxyPricingFields({
               name="maxTrafficGb"
               type="number"
               defaultValue={plan?.maxTrafficGb ?? ""}
-              placeholder="例如 1000"
+              placeholder="1000"
             />
           </div>
         </div>
@@ -184,7 +182,7 @@ export function ProxyPricingFields({
               type="number"
               min={1}
               defaultValue={plan?.fixedTrafficGb ?? plan?.minTrafficGb ?? ""}
-              placeholder="例如 200"
+              placeholder="200"
             />
           </div>
           <div>
@@ -196,7 +194,7 @@ export function ProxyPricingFields({
               step="0.01"
               min={0.01}
               defaultValue={plan?.fixedPrice ?? ""}
-              placeholder="例如 29.9"
+              placeholder="29.9"
             />
           </div>
         </div>
@@ -210,13 +208,8 @@ export function ProxyPricingFields({
           type="number"
           min={1}
           defaultValue={plan?.totalTrafficGb ?? ""}
-          placeholder="留空=无限流量"
+          placeholder="空=不限"
         />
-        {allowTrafficTopup && (
-          <p className="mt-1.5 text-xs text-muted-foreground">
-            增流量上限按剩余总流量实时计算。
-          </p>
-        )}
       </div>
     </>
   );
@@ -234,7 +227,6 @@ export function ProxyConfigSection(props: {
   selectedInboundIds: string[];
   setSelectedInboundIds: Dispatch<SetStateAction<string[]>>;
   toggleInbound: (inboundId: string) => void;
-  allowTrafficTopup: boolean;
   pricingMode: PlanPricingMode;
   setPricingMode: Dispatch<SetStateAction<PlanPricingMode>>;
 }) {