feat: 添加 cacheWarningEnabled 配置项，支持在 /config 面板关闭缓存率警告

Author: claude-code-best

src/components/Settings/Config.tsx

@@ -331,6 +331,24 @@ export function Config({
         });
       },
     },
+    {
+      id: 'cacheWarningEnabled',
+      label: 'Cache warnings',
+      value: settingsData?.cacheWarningEnabled ?? true,
+      type: 'boolean' as const,
+      onChange(cacheWarningEnabled: boolean) {
+        updateSettingsForSource('localSettings', {
+          cacheWarningEnabled,
+        });
+        setSettingsData(prev => ({
+          ...prev,
+          cacheWarningEnabled,
+        }));
+        logEvent('tengu_cache_warning_setting_changed', {
+          enabled: cacheWarningEnabled,
+        });
+      },
+    },
     {
       id: 'prefersReducedMotion',
       label: 'Reduce motion',

src/query.ts

@@ -133,6 +133,7 @@ import { getAPIProvider } from './utils/model/providers.js'
 import {
   createCacheWarningMessage,
   getCacheThreshold,
+  isCacheWarningEnabled,
   shouldShowCacheWarning,
 } from './utils/cacheWarning.js'
 
@@ -1256,7 +1257,7 @@ async function* queryLoop(
             cache_read_input_tokens: number
           }
         | undefined
-      if (usage) {
+      if (usage && isCacheWarningEnabled()) {
         const warningInfo = shouldShowCacheWarning(
           usage,
           querySource,

src/utils/cacheWarning.ts

@@ -40,6 +40,14 @@ export function getCacheThreshold(): number {
   return settings.cacheThreshold ?? DEFAULT_CACHE_THRESHOLD
 }
 
+/**
+ * 检查缓存警告是否启用。默认 true。
+ */
+export function isCacheWarningEnabled(): boolean {
+  const settings = getInitialSettings()
+  return settings.cacheWarningEnabled ?? true
+}
+
 /**
  * 计算缓存命中率
  * 返回值范围 0-100，null 表示无有效数据

src/utils/settings/types.ts

@@ -1089,6 +1089,12 @@ export const SettingsSchema = lazySchema(() =>
         .describe(
           'Prompt cache hit rate threshold (0-100). Warnings shown when cache hit rate falls below this percentage. Default: 80.',
         ),
+      cacheWarningEnabled: z
+        .boolean()
+        .optional()
+        .describe(
+          'Whether to show cache hit rate warnings in the message flow when the rate falls below cacheThreshold. Default: true.',
+        ),
       pluginTrustMessage: z
         .string()
         .optional()