diff --git a/backend/cmd/server/VERSION b/backend/cmd/server/VERSION
index 68dda295..5657b5e3 100644
--- a/backend/cmd/server/VERSION
+++ b/backend/cmd/server/VERSION
@@ -1 +1 @@
-0.1.110.51
+0.1.112.3
diff --git a/backend/internal/handler/admin/setting_handler.go b/backend/internal/handler/admin/setting_handler.go
index 2324cc70..2a87e95c 100644
--- a/backend/internal/handler/admin/setting_handler.go
+++ b/backend/internal/handler/admin/setting_handler.go
@@ -1939,7 +1939,7 @@ func (h *SettingHandler) GetWebSearchEmulationConfig(c *gin.Context) {
 		response.ErrorFrom(c, err)
 		return
 	}
-	response.Success(c, service.SanitizeWebSearchConfig(c.Request.Context(), cfg))
+	response.Success(c, service.PopulateWebSearchUsage(c.Request.Context(), cfg))
 }
 
 // UpdateWebSearchEmulationConfig 更新 Web Search 模拟配置
diff --git a/backend/internal/service/websearch_config.go b/backend/internal/service/websearch_config.go
index 5658cec3..239e882a 100644
--- a/backend/internal/service/websearch_config.go
+++ b/backend/internal/service/websearch_config.go
@@ -277,6 +277,28 @@ func TestWebSearch(ctx context.Context, query string) (*WebSearchTestResult, err
 	}, nil
 }
 
+// PopulateWebSearchUsage returns a copy with quota usage populated from Redis (api_key kept as-is).
+func PopulateWebSearchUsage(ctx context.Context, cfg *WebSearchEmulationConfig) *WebSearchEmulationConfig {
+	if cfg == nil {
+		return nil
+	}
+	out := *cfg
+	out.Providers = make([]WebSearchProviderConfig, len(cfg.Providers))
+
+	mgr := getWebSearchManager()
+
+	for i, p := range cfg.Providers {
+		out.Providers[i] = p
+		out.Providers[i].APIKeyConfigured = p.APIKey != ""
+
+		if mgr != nil {
+			used, _ := mgr.GetUsage(ctx, p.Type)
+			out.Providers[i].QuotaUsed = used
+		}
+	}
+	return &out
+}
+
 // SanitizeWebSearchConfig returns a copy with api_key fields masked and quota usage populated.
 func SanitizeWebSearchConfig(ctx context.Context, cfg *WebSearchEmulationConfig) *WebSearchEmulationConfig {
 	if cfg == nil {
diff --git a/frontend/src/views/admin/SettingsView.vue b/frontend/src/views/admin/SettingsView.vue
index 3ef1c0ba..12f67187 100644
--- a/frontend/src/views/admin/SettingsView.vue
+++ b/frontend/src/views/admin/SettingsView.vue
@@ -1775,8 +1775,8 @@
                       @click.stop
                     />
                     <!-- Quota summary in collapsed state -->
-                    <span v-if="!expandedProviders[pIdx] && provider.quota_limit > 0" class="text-xs text-gray-400">
-                      {{ provider.quota_used ?? 0 }} / {{ provider.quota_limit }}
+                    <span v-if="!expandedProviders[pIdx]" class="text-xs text-gray-400">
+                      {{ provider.quota_used ?? 0 }} / {{ provider.quota_limit > 0 ? provider.quota_limit : '∞' }}
                     </span>
                     <span v-if="!expandedProviders[pIdx] && provider.api_key_configured" class="text-xs text-green-500">
                       {{ t('admin.settings.webSearchEmulation.apiKeyConfigured') }}
@@ -1797,10 +1797,10 @@
                         v-model="provider.api_key"
                         :type="apiKeyVisible[pIdx] ? 'text' : 'password'"
                         class="input w-full text-sm"
-                        :class="provider.api_key ? 'pr-16' : ''"
+                        :class="(provider.api_key || provider.api_key_configured) ? 'pr-16' : ''"
                         :placeholder="provider.api_key_configured ? '••••••••' : t('admin.settings.webSearchEmulation.apiKeyPlaceholder')"
                       />
-                      <div v-if="provider.api_key" class="absolute inset-y-0 right-0 flex items-center pr-1.5">
+                      <div v-if="provider.api_key || provider.api_key_configured" class="absolute inset-y-0 right-0 flex items-center pr-1.5">
                         <button
                           type="button"
                           class="rounded p-1 text-gray-400 hover:text-gray-600 dark:hover:text-gray-300"
@@ -1818,7 +1818,9 @@
                         <button
                           type="button"
                           class="rounded p-1 text-gray-400 hover:text-gray-600 dark:hover:text-gray-300"
+                          :class="{ 'opacity-30 cursor-not-allowed': !provider.api_key }"
                           :title="t('admin.settings.webSearchEmulation.copyApiKey')"
+                          :disabled="!provider.api_key"
                           @click="copyApiKey(pIdx)"
                         >
                           <svg class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor">
@@ -1849,16 +1851,17 @@
                   </div>
 
                   <!-- Usage display -->
-                  <div v-if="provider.quota_limit > 0" class="flex items-center gap-2">
+                  <div class="flex items-center gap-2">
                     <span class="text-xs text-gray-500">{{ t('admin.settings.webSearchEmulation.quotaUsage') }}:</span>
-                    <div class="flex-1 rounded-full bg-gray-200 dark:bg-dark-600" style="height: 6px">
+                    <div v-if="provider.quota_limit > 0" class="flex-1 rounded-full bg-gray-200 dark:bg-dark-600" style="height: 6px">
                       <div
                         class="h-full rounded-full transition-all"
                         :class="quotaPercentage(provider) > 90 ? 'bg-red-500' : quotaPercentage(provider) > 70 ? 'bg-yellow-500' : 'bg-green-500'"
                         :style="{ width: Math.min(quotaPercentage(provider), 100) + '%' }"
                       />
                     </div>
-                    <span class="text-xs text-gray-500">{{ provider.quota_used ?? 0 }} / {{ provider.quota_limit }}</span>
+                    <div v-else class="flex-1" />
+                    <span class="text-xs text-gray-500">{{ provider.quota_used ?? 0 }} / {{ provider.quota_limit > 0 ? provider.quota_limit : '∞' }}</span>
                   </div>
 
                   <!-- Proxy + Test on same row -->
@@ -3164,9 +3167,13 @@ async function loadWebSearchConfig() {
 
 async function saveWebSearchConfig(): Promise<boolean> {
   try {
+    const providers = webSearchConfig.providers.map((p: WebSearchProviderConfig) => ({
+      ...p,
+      quota_limit: typeof p.quota_limit === 'number' && p.quota_limit > 0 ? p.quota_limit : 0,
+    }))
     await adminAPI.settings.updateWebSearchEmulationConfig({
       enabled: webSearchConfig.enabled,
-      providers: webSearchConfig.providers as WebSearchProviderConfig[],
+      providers,
     })
     return true
   } catch (err: unknown) {