feat(usage): 记录并展示失败请求(用户端+管理端)

- 记录失败请求并在用户端/管理端展示;分类下拉改用统一 Select 组件
- 模型过滤改后端 ILIKE 模糊匹配;新增「Key 名称」列(含已删除标记)与按 Key 过滤;时间列移至末列
- 用户可见「已删除 key 失败请求」:OpsErrorLogFilter 加 MatchDeletedKeyOwner,用户侧归属
  放宽为 (user_id OR deleted_key_owner_user_id),让 key 原所有者能看到删除 key 后继续请求
  导致的认证失败记录(他人仍 NotFound,不泄露存在性)
- 迁移 148:ops_error_logs 用户+时间索引

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend/src/components/common/Select.vue

@@ -22,6 +22,18 @@
           {{ selectedLabel }}
         </slot>
       </span>
+      <span
+        v-if="clearable && hasValue && !disabled"
+        class="select-clear"
+        role="button"
+        tabindex="-1"
+        aria-label="Clear selection"
+        @click.stop="clearSelection"
+        @mousedown.stop
+        @keydown.enter.stop.prevent="clearSelection"
+      >
+        <Icon name="x" size="sm" />
+      </span>
       <span class="select-icon">
         <Icon
           name="chevronDown"
@@ -135,6 +147,7 @@ interface Props {
   labelKey?: string
   creatable?: boolean
   creatablePrefix?: string
+  clearable?: boolean
 }
 
 interface Emits {
@@ -148,6 +161,7 @@ const props = withDefaults(defineProps<Props>(), {
   searchable: 'auto',
   creatable: false,
   creatablePrefix: '',
+  clearable: false,
   valueKey: 'value',
   labelKey: 'label'
 })
@@ -239,6 +253,10 @@ const selectedLabel = computed(() => {
   return placeholderText.value
 })
 
+const hasValue = computed(
+  () => props.modelValue !== null && props.modelValue !== undefined && props.modelValue !== ''
+)
+
 const filteredOptions = computed(() => {
   let opts = props.options as any[]
   if (isSearchable.value && searchQuery.value) {
@@ -355,6 +373,12 @@ const selectOption = (option: any) => {
   triggerRef.value?.focus()
 }
 
+const clearSelection = () => {
+  if (props.disabled) return
+  emit('update:modelValue', null)
+  emit('change', null, null)
+}
+
 // Keyboards
 const onTriggerKeyDown = () => {
   if (!isOpen.value) {
@@ -461,6 +485,12 @@ onUnmounted(() => {
 .select-icon {
   @apply flex-shrink-0 text-gray-400 dark:text-dark-400;
 }
+
+.select-clear {
+  @apply flex flex-shrink-0 cursor-pointer items-center justify-center;
+  @apply rounded text-gray-400 transition-colors;
+  @apply hover:text-gray-600 dark:hover:text-gray-200;
+}
 </style>
 
 <style>