feat: 评测模块新增详情页与创建向导

新增 EvalTaskDetail 与逐样本结果类型，Mock 与适配器补充评测详情接口，路由注册详情页并将维度创建并入向导；EvalCreateView 改为分步向导（任务配置、规则设置、维度表单），新增 EvalDetailView 展示综合得分与样本判定，列表补充详情入口，配套两份回归脚本。

frontend/src/views/eval/create/DimensionFormFields.vue

@@ -0,0 +1,168 @@
+<script setup lang="ts">
+import { computed, watch } from 'vue'
+import { MdEditor } from 'md-editor-v3'
+import 'md-editor-v3/lib/style.css'
+import { EVAL_METHODS, EVAL_METHOD_PROMPTS } from '@/constants/dimension'
+import { DIMENSION_TYPE_MAP } from '@/constants'
+import type { DimensionType, ModelItem } from '@/types'
+
+export interface DimensionFormDraft {
+  name: string
+  type: DimensionType | ''
+  description: string
+  eval_model: string
+  eval_method: string | string[]
+  eval_prompt: string
+  is_active: boolean
+  is_default: boolean
+  bleu_n: number
+  output_precision: number
+  score_min: number
+  score_max: number
+  pass_threshold: number
+}
+
+defineProps<{ evalModels: ModelItem[] }>()
+
+const form = defineModel<DimensionFormDraft>({ required: true })
+
+const typeOptions = Object.entries(DIMENSION_TYPE_MAP).map(([value, label]) => ({ value, label }))
+const currentMethods = computed(() => (form.value.type ? EVAL_METHODS[form.value.type] || [] : []))
+
+/**
+ * 指标类型变化时初始化对应的评估方式和 Prompt。
+ * 同步执行可保证编辑页批量回填时，接口返回值最终覆盖默认值。
+ */
+watch(
+  () => form.value.type,
+  (type) => {
+    if (!type) return
+    const firstMethod = EVAL_METHODS[type]?.[0]?.value || ''
+    form.value.eval_method = type === 'text_similarity' ? [firstMethod] : firstMethod
+    if (type !== 'text_similarity' && EVAL_METHOD_PROMPTS[firstMethod]) {
+      form.value.eval_prompt = EVAL_METHOD_PROMPTS[firstMethod]
+    }
+  },
+  { flush: 'sync' },
+)
+
+/** 评估方式变化时应用对应的预置 Prompt。 */
+watch(
+  () => form.value.eval_method,
+  (method) => {
+    if (form.value.type === 'text_similarity' || !method) return
+    const selectedMethod = Array.isArray(method) ? method[0] : method
+    if (selectedMethod && EVAL_METHOD_PROMPTS[selectedMethod]) {
+      form.value.eval_prompt = EVAL_METHOD_PROMPTS[selectedMethod]
+    }
+  },
+  { flush: 'sync' },
+)
+</script>
+
+<template>
+  <el-form-item label="维度名称" prop="name">
+    <el-input v-model="form.name" placeholder="请输入维度名称" maxlength="50" show-word-limit />
+  </el-form-item>
+
+  <el-form-item label="指标类型" prop="type">
+    <el-select v-model="form.type" placeholder="请选择指标类型" style="width: 100%">
+      <el-option v-for="option in typeOptions" :key="option.value" :label="option.label" :value="option.value" />
+    </el-select>
+  </el-form-item>
+
+  <el-form-item label="描述">
+    <el-input v-model="form.description" type="textarea" :rows="2" maxlength="200" show-word-limit />
+  </el-form-item>
+
+  <template v-if="form.type === 'classification' || form.type === 'metric'">
+    <el-form-item label="选择大模型" prop="eval_model">
+      <el-select v-model="form.eval_model" placeholder="请选择评测模型" filterable style="width: 100%">
+        <el-option v-for="model in evalModels" :key="model.id" :label="model.name" :value="model.name" />
+      </el-select>
+    </el-form-item>
+
+    <el-form-item label="评估方式" prop="eval_method">
+      <el-radio-group v-model="(form.eval_method as string)">
+        <el-radio v-for="method in currentMethods" :key="method.value" :value="method.value">
+          {{ method.name }}
+          <span class="method-desc">{{ method.desc }}</span>
+        </el-radio>
+      </el-radio-group>
+    </el-form-item>
+
+    <el-form-item label="评估 Prompt" prop="eval_prompt">
+      <MdEditor
+        v-model="form.eval_prompt"
+        language="zh-CN"
+        :toolbars-exclude="['github', 'save']"
+        style="height: 320px"
+      />
+    </el-form-item>
+  </template>
+
+  <template v-if="form.type === 'text_similarity'">
+    <el-form-item label="评估方式" prop="eval_method">
+      <el-checkbox-group v-model="(form.eval_method as string[])">
+        <el-checkbox v-for="method in currentMethods" :key="method.value" :value="method.value">
+          {{ method.name }}
+          <span class="method-desc">{{ method.desc }}</span>
+        </el-checkbox>
+      </el-checkbox-group>
+    </el-form-item>
+
+    <el-form-item label="BLEU n-gram">
+      <el-select v-model="form.bleu_n" style="width: 160px">
+        <el-option :value="1" label="1-gram" />
+        <el-option :value="2" label="2-gram" />
+        <el-option :value="3" label="3-gram" />
+        <el-option :value="4" label="4-gram" />
+      </el-select>
+    </el-form-item>
+
+    <el-form-item label="输出精度">
+      <el-select v-model="form.output_precision" style="width: 160px">
+        <el-option :value="1" label="1 位小数" />
+        <el-option :value="2" label="2 位小数" />
+        <el-option :value="3" label="3 位小数" />
+        <el-option :value="4" label="4 位小数" />
+      </el-select>
+    </el-form-item>
+  </template>
+
+  <template v-if="form.type === 'metric'">
+    <el-form-item label="评分最小值">
+      <el-input-number v-model="form.score_min" :min="0" :step="1" style="width: 160px" />
+    </el-form-item>
+    <el-form-item label="评分最大值">
+      <el-input-number v-model="form.score_max" :min="0" :step="1" style="width: 160px" />
+    </el-form-item>
+    <el-form-item label="通过阈值">
+      <div style="width: 100%">
+        <el-slider
+          v-model="form.pass_threshold"
+          :min="form.score_min"
+          :max="form.score_max"
+          :step="0.5"
+          show-input
+          :show-input-controls="false"
+        />
+      </div>
+    </el-form-item>
+  </template>
+
+  <el-form-item label="启用该维度">
+    <el-switch v-model="form.is_active" />
+  </el-form-item>
+  <el-form-item label="设为默认">
+    <el-switch v-model="form.is_default" />
+  </el-form-item>
+</template>
+
+<style scoped>
+.method-desc {
+  color: #909399;
+  font-size: 12px;
+  margin-left: 6px;
+}
+</style>