refactor: 重构限流系统和健康监控，支持按 API 格式区分

- 将 adaptive_concurrency 重命名为 adaptive_rpm，从并发控制改为 RPM 控制
- 健康监控器支持按 API 格式独立管理健康度和熔断器状态
- 新增 model_permissions 模块，支持按格式配置允许的模型
- 重构前端提供商相关表单组件，新增 Collapsible UI 组件
- 新增数据库迁移脚本支持新的数据结构

frontend/src/components/ui/collapsible-content.vue

@@ -0,0 +1,15 @@
+<script setup lang="ts">
+import { CollapsibleContent, type CollapsibleContentProps } from 'radix-vue'
+import { cn } from '@/lib/utils'
+
+const props = defineProps<CollapsibleContentProps & { class?: string }>()
+</script>
+
+<template>
+  <CollapsibleContent
+    v-bind="props"
+    :class="cn('overflow-hidden data-[state=closed]:animate-collapsible-up data-[state=open]:animate-collapsible-down', props.class)"
+  >
+    <slot />
+  </CollapsibleContent>
+</template>

frontend/src/components/ui/collapsible-trigger.vue

@@ -0,0 +1,11 @@
+<script setup lang="ts">
+import { CollapsibleTrigger, type CollapsibleTriggerProps } from 'radix-vue'
+
+const props = defineProps<CollapsibleTriggerProps>()
+</script>
+
+<template>
+  <CollapsibleTrigger v-bind="props" as-child>
+    <slot />
+  </CollapsibleTrigger>
+</template>

frontend/src/components/ui/collapsible.vue

@@ -0,0 +1,15 @@
+<script setup lang="ts">
+import { CollapsibleRoot, type CollapsibleRootEmits, type CollapsibleRootProps } from 'radix-vue'
+import { useForwardPropsEmits } from 'radix-vue'
+
+const props = defineProps<CollapsibleRootProps>()
+const emits = defineEmits<CollapsibleRootEmits>()
+
+const forwarded = useForwardPropsEmits(props, emits)
+</script>
+
+<template>
+  <CollapsibleRoot v-bind="forwarded">
+    <slot />
+  </CollapsibleRoot>
+</template>

frontend/src/components/ui/index.ts

@@ -65,3 +65,8 @@ export { default as RefreshButton } from './refresh-button.vue'
 
 // Tooltip 提示系列
 export { Tooltip, TooltipContent, TooltipProvider, TooltipTrigger } from './tooltip'
+
+// Collapsible 折叠系列
+export { default as Collapsible } from './collapsible.vue'
+export { default as CollapsibleTrigger } from './collapsible-trigger.vue'
+export { default as CollapsibleContent } from './collapsible-content.vue'