refactor: simplify rule card UI - hide metric/condition/unit

- Replace editable name/metric/condition/unit with plain text in card header

- Card header shows: [type] [metric label] [condition label] [threshold][unit] \u2192 \u5c01\u53f7

- Type change auto-updates metric/condition/unit via typeDefaults mapping

- Card body only shows: threshold, applicable, description

- Fix edit title to show site name instead of raw siteType

- Remove unused styles and functions

web/src/views/RiskRules.vue

@@ -31,7 +31,7 @@
     <!-- 顶部工具栏 -->
     <div style="display:flex;justify-content:space-between;align-items:center;margin-bottom:10px;flex-shrink:0">
       <div style="display:flex;align-items:center;gap:12px">
-        <h2 style="margin:0">编辑: {{ editType }}</h2>
+        <h2 style="margin:0">编辑: {{ editSiteName }}</h2>
         <el-tag size="small" type="info">{{ parsed.length }} 条规则</el-tag>
       </div>
       <div style="display:flex;gap:8px">
@@ -86,12 +86,12 @@
             <div class="card-header" @dblclick="rule._fold = !rule._fold">
               <div class="card-header-left">
                 <el-icon class="drag-handle"><Rank /></el-icon>
-                <!-- 类型 -->
-                <el-select v-model="rule.type" size="small" @change="sync" style="width:100px">
+                <el-select v-model="rule.type" size="small" @change="onTypeChange(rule)" style="width:100px">
                   <el-option v-for="x in typeOptions" :key="x.value" :label="x.label" :value="x.value" />
                 </el-select>
-                <!-- 规则名称 -->
-                <el-input v-model="rule.name" size="small" placeholder="规则名称" @input="sync" style="width:220px" />
+                <span class="rule-fixed-text">{{ metricLabel(rule.metric) }} {{ condLabel(rule.condition) }} {{ rule.threshold }}{{ rule.unit || '' }}</span>
+                <span class="then-arrow">→</span>
+                <span style="color:#f56c6c;font-weight:600;font-size:13px">封号</span>
               </div>
               <div class="card-header-right">
                 <span class="rule-index">#{{ idx + 1 }}</span>
@@ -105,34 +105,24 @@
             <!-- 卡片正文（可折叠） -->
             <div v-show="!rule._fold" class="card-body">
 
+              <!-- 阈值 -->
+              <div class="field-row">
+                <span class="field-label">阈值</span>
+                <el-input v-model.number="rule.threshold" size="small" type="number" placeholder="阈值" @input="sync" style="width:120px" />
+                <span class="field-hint">{{ rule.unit || '' }}</span>
+              </div>
+
               <!-- 适用条件 -->
               <div class="field-row">
                 <span class="field-label">适用条件</span>
                 <el-select v-model="rule.applicable" size="small" @change="sync" clearable placeholder="无条件（始终适用）" style="width:200px">
                   <el-option v-for="x in applicableOptions" :key="x.value" :label="x.label" :value="x.value" />
                 </el-select>
-                <span class="field-hint">{{ applicableHint(rule.applicable) }}</span>
               </div>
 
-              <!-- 触发条件：当 [指标] [条件] [阈值] [单位] → 封号 -->
+              <!-- 规则说明 -->
               <div class="field-row">
-                <span class="field-label">触发条件</span>
-                <span class="condition-text">当</span>
-                <el-select v-model="rule.metric" size="small" @change="sync" filterable allow-create placeholder="指标" style="width:160px">
-                  <el-option v-for="x in metricOptions" :key="x.value" :label="x.label" :value="x.value" />
-                </el-select>
-                <el-select v-model="rule.condition" size="small" @change="sync" style="width:105px">
-                  <el-option v-for="x in condOptions" :key="x.value" :label="x.label" :value="x.value" />
-                </el-select>
-                <el-input v-model.number="rule.threshold" size="small" type="number" placeholder="阈值" @input="sync" style="width:90px" />
-                <el-input v-model="rule.unit" size="small" placeholder="单位" @input="sync" style="width:70px" />
-                <span class="then-arrow">→</span>
-                <span style="color:#f56c6c;font-weight:600">封号</span>
-              </div>
-
-              <!-- 规则描述 -->
-              <div class="field-row">
-                <span class="field-label">规则说明</span>
+                <span class="field-label">说明</span>
                 <el-input v-model="rule.description" size="small" placeholder="可选说明" @input="sync" style="flex:1;max-width:500px" />
               </div>
             </div>
@@ -207,9 +197,21 @@ const metricOptions = [
 ]
 
 const typeLabel = (t) => typeOptions.find(x => x.value === t)?.label || t
-const applicableHint = (a) => {
-  const m = { '!sealed':'未封存用户', 'sealed':'已封存用户', 'zero_traffic':'上传/下载均为 0', 'new_account_30d':'从未完成种子且无流量增量' }
-  return a ? `— ${m[a] || ''}` : ''
+
+const typeDefaults = {
+  KILL:    { metric:'days_since_last_login',   condition:'GT',  unit:'天' },
+  TRAFFIC: { metric:'days_since_last_traffic', condition:'GT',  unit:'天' },
+  LOGIN:   { metric:'days_since_last_login',   condition:'GT',  unit:'天' },
+  HD:      { metric:'hnr_count',               condition:'GTE', unit:'次' },
+  RATIO:   { metric:'ratio',                   condition:'LT',  unit:'' },
+}
+const metricLabel = (m) => metricOptions.find(x => x.value === m)?.label || m || ''
+const condLabel = (c) => condOptions.find(x => x.value === c)?.label || c || ''
+
+const onTypeChange = (rule) => {
+  const d = typeDefaults[rule.type]
+  if (d) { rule.metric = d.metric; rule.condition = d.condition; rule.unit = d.unit }
+  sync()
 }
 
 // ============ 预设规则模板 ============
@@ -255,6 +257,11 @@ const parsed = computed({
   set(v) { editorJson.value = JSON.stringify(v, null, 2) }
 })
 
+const editSiteName = computed(() => {
+  if (!editType.value) return ''
+  const site = (sites.value||[]).find(s => s.siteType === editType.value)
+  return site ? (site.names||[]).join('/') || site.siteId || editType.value : editType.value
+})
 const merged = computed(() => (Array.isArray(sites.value)?sites.value:[]).map(s => ({
   siteId: s.siteId, names: s.names, siteType: s.siteType,
   ruleCount: rulesMap.value[s.siteType]?.ruleCount || 0, version: rulesMap.value[s.siteType]?.version || null,
@@ -289,8 +296,9 @@ const editRule = async (row) => {
 const sync = () => { editorJson.value = JSON.stringify(parsed.value, null, 2) }
 
 const addRule = () => {
+  const d = typeDefaults['KILL']
   parsed.value = [...parsed.value, {
-    type:'KILL', name:'', metric:'days_since_last_login', threshold:0, unit:'天', condition:'GT',
+    type:'KILL', metric:d.metric, threshold:0, unit:d.unit, condition:d.condition,
     applicable:null, description:'', _fold:false
   }]
 }
@@ -361,11 +369,11 @@ onMounted(fetchAll)
 .drag-handle:active { cursor: grabbing; }
 .rule-index { font-size: 11px; color: #c0c4cc; font-weight: 500; min-width: 24px; text-align: right; }
 
-.card-body { padding: 4px 12px 10px 34px; display: flex; flex-direction: column; gap: 6px; }
+.card-body { padding: 6px 12px 10px 12px; display: flex; flex-direction: column; gap: 6px; }
+.rule-fixed-text { font-size: 13px; color: #303133; }
 
 .field-row { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; font-size: 13px; }
 .field-label { font-weight: 500; color: #606266; font-size: 12px; min-width: 56px; }
-.field-hint { color: #909399; font-size: 11px; }
-.condition-text { color: #909399; font-size: 12px; }
-.then-arrow { color: #f56c6c; font-size: 16px; font-weight: 700; margin: 0 2px; }
+.field-hint { color: #909399; font-size: 12px; }
+.then-arrow { color: #f56c6c; font-size: 14px; font-weight: 700; margin: 0 2px; }
 </style>