diff --git a/src/components/ErrorBoundary.vue b/src/components/ErrorBoundary.vue
index ff494e5..d90f42b 100644
--- a/src/components/ErrorBoundary.vue
+++ b/src/components/ErrorBoundary.vue
@@ -7,7 +7,11 @@
     <template v-if="error">
       <div class="error-boundary-icon">⚠</div>
       <div class="error-boundary-title">{{ $t('error.title') }}</div>
-      <div class="error-boundary-desc">{{ $t('error.desc') }}</div>
+      <div class="error-boundary-desc">{{ errorMessage }}</div>
+      <details class="error-boundary-details">
+        <summary>堆栈详情</summary>
+        <pre class="error-boundary-stack">{{ errorStack }}</pre>
+      </details>
       <button class="error-boundary-retry" @click="reset">{{ $t('error.retry') }}</button>
     </template>
     <slot v-else />
@@ -15,11 +19,26 @@
 </template>
 
 <script setup lang="ts">
-import { ref, onErrorCaptured } from 'vue'
+import { ref, computed, onErrorCaptured } from 'vue'
 
-// errorCaptured 捕获子组件树抛出的错误(渲染/生命周期),返回 false 阻止继续向上冒泡
 const error = ref<unknown>(null)
 
+const errorMessage = computed(() => {
+  if (!error.value) return ''
+  if (error.value instanceof Error) return error.value.message
+  return String(error.value)
+})
+
+const errorStack = computed(() => {
+  if (!error.value) return ''
+  if (error.value instanceof Error) return error.value.stack || error.value.message
+  try {
+    return JSON.stringify(error.value, null, 2)
+  } catch {
+    return String(error.value)
+  }
+})
+
 onErrorCaptured((err) => {
   error.value = err
   console.error('[ErrorBoundary] 子树渲染错误:', err)
@@ -61,7 +80,32 @@ function reset() {
 .error-boundary-desc {
   font-size: 12px;
   line-height: 1.5;
-  max-width: 360px;
+  max-width: 480px;
+  word-break: break-all;
+}
+.error-boundary-details {
+  max-width: 600px;
+  width: 100%;
+  margin-top: 8px;
+  font-size: 11px;
+  color: var(--df-text-dim);
+}
+.error-boundary-details summary {
+  cursor: pointer;
+  user-select: none;
+}
+.error-boundary-stack {
+  margin-top: 6px;
+  padding: 8px;
+  background: rgba(0,0,0,0.3);
+  border-radius: 4px;
+  font-family: var(--df-font-mono, monospace);
+  font-size: 10px;
+  line-height: 1.4;
+  white-space: pre-wrap;
+  word-break: break-all;
+  max-height: 240px;
+  overflow: auto;
 }
 .error-boundary-retry {
   margin-top: 8px;
diff --git a/src/components/settings/ProviderPanel.vue b/src/components/settings/ProviderPanel.vue
index 61470fb..9e4c221 100644
--- a/src/components/settings/ProviderPanel.vue
+++ b/src/components/settings/ProviderPanel.vue
@@ -130,14 +130,22 @@
 import { reactive, ref, onMounted } from 'vue'
 import { useI18n } from 'vue-i18n'
 import { aiApi } from '@/api'
-import { useAiStore } from '@/stores/ai'
 import type { AiProviderConfig, ModelConfig } from '@/api/types'
 
 // ============================================================
 // AI 提供商域 — 真实后端 CRUD + F-04c 负载均衡池(enabled / weight)
 // ============================================================
 const { t } = useI18n()
-const aiStore = useAiStore()
+
+// 懒加载 useAiStore 避免静态 import 形成循环依赖:
+// ProviderPanel → stores/ai → useAiEvents → aiShared → useAppSettingsStore
+// 在 Settings chunk 首次加载时,stores/ai 模块顶层代码(__bindMessages)可能触发 TDZ。
+// 改为运行时动态 import,模块加载顺序不再耦合。
+async function syncAiStoreProviders() {
+  const { useAiStore } = await import('@/stores/ai')
+  const aiStore = useAiStore()
+  await aiStore.loadProviders()
+}
 
 const emit = defineEmits<{
   (e: 'toast', msg: string, type: 'error' | 'warning' | 'info'): void
@@ -170,7 +178,8 @@ async function loadProviders() {
   try {
     aiProviders.value = await aiApi.listProviders()
     // 同步刷新全局 store(AiChat 等 AI 面板消费方共享同一 state,避免改完仍提示「未配置」)
-    await aiStore.loadProviders()
+    // 懒加载避免循环依赖(见文件顶部 syncAiStoreProviders 注释)
+    await syncAiStoreProviders()
     emit('providers-changed')
   } catch (e) {
     console.error(t('settings.toastLoadProviderFail'), e)