feat(sense): T-G7 审计+前端（live 分流接线 + tier 指标卡 + Settings 灰度区块）

- proxy/routes：sense.mode=live 时转发前调 Grader 分流，档位 -> 池条目
  （tier_pool_hint 映射），响应头 X-Campus-Tier 透出（可解释性）；
  T1 决策按 review.sample_rate 抽样入 ReviewQueue（sense_t1 标签，
  人工核"判 T1 实为更高档"）；分级故障不影响代理可用性（D-G4）
- /api/metrics：sense 段（enabled/mode/观察数/已标签/档位分布/shadow 一致率）
- 前端：MetricsView「语义分级」卡片（观察/标签进度/一致率/晋升门提示）；
  SettingsView「Sense 灰度控制」区块（总开关 + collect/shadow/live 切换 +
  标签进度），npm run build 产物更新
- 全量 410 passed

webapp/.mimosa/hook-status/sess_e50d4f25-3ac6-43f2-b2f3-8833b3150465-4843032ba9.json

@@ -1,14 +1,14 @@
 {
   "schemaVersion": "mimosa-hook-status/v1",
-  "recordedAt": "2026-09-01T14:21:11.564Z",
+  "recordedAt": "2026-09-05T07:03:44.339Z",
   "sessionId": "sess_e50d4f25-3ac6-43f2-b2f3-8833b3150465",
   "event": "PostToolUse",
   "toolName": "Edit",
-  "file": "src/views/AgentView.vue",
+  "file": "src/views/MetricsView.vue",
   "outcome": "clear",
   "coverage": "complete",
   "findingCount": 0,
-  "durationMs": 7,
+  "durationMs": 2,
   "hostState": "hook_complete",
   "reportHint": ".mimosa/reports/"
 }

webapp/src/types/index.ts

@@ -114,4 +114,13 @@ export interface Metrics {
   cache: Record<string, unknown>
   v2?: Record<string, unknown>
   review?: { pending: number; total: number }
+  sense?: {
+    enabled: boolean
+    mode: string
+    observations: number
+    labeled: number
+    by_decided_tier?: Record<string, number>
+    agreement?: number
+    min_labels?: number
+  }
 }

webapp/src/views/MetricsView.vue

@@ -58,6 +58,21 @@
           <p class="hint">单价来自模型池条目（$/1M tokens）；经典设置下的模型成本不计入。</p>
         </div>
 
+        <div v-if="sense && sense.observations" class="metric-card">
+          <h3>语义分级（sense · {{ sense.mode }}）</h3>
+          <div class="kv-list">
+            <span>观察数</span><b>{{ sense.observations }}</b>
+            <span>已标签</span><b>{{ sense.labeled }} / {{ sense.min_labels }}</b>
+            <span>一致率</span><b>{{ ((sense.agreement ?? 0) * 100).toFixed(1) }}%</b>
+            <template v-for="(v, k) in sense.by_decided_tier" :key="k">
+              <span>判 {{ k }}</span><b>{{ v }}</b>
+            </template>
+          </div>
+          <p class="hint">
+            晋升门：一致率 ≥85% + 标签 ≥{{ sense.min_labels }} + 审计无误判（collect 攒满前不开 live）
+          </p>
+        </div>
+
         <div v-if="data.review" class="metric-card review-card">
           <h3>人工检验</h3>
           <div class="review-stats">
@@ -115,6 +130,8 @@ const byModel = computed(() => {
   return (v2?.by_model as Record<string, ModelBucket>) || null
 })
 
+const sense = computed(() => data.value?.sense || null)
+
 async function load() {
   loading.value = true
   error.value = ''

webapp/src/views/SettingsView.vue

@@ -389,6 +389,45 @@
       </div>
     </section>
 
+    <!-- 🧠 语义分级（sense）灰度控制 -->
+    <section class="settings-section">
+      <div class="section-title">
+        <span>🧠 语义分级（Sense · 三级任务分级）</span>
+        <div class="title-right">
+          <span :class="['server-badge', senseCfg.enabled ? 'badge-running' : 'badge-stopped']">
+            {{ senseCfg.enabled ? `● ${senseCfg.mode}` : '○ 未启用' }}
+          </span>
+        </div>
+      </div>
+      <div class="section-body">
+        <p class="role-hint">
+          灰度纪律：collect（只记不决策）攒满 {{ senseCfg.min_labels }} 条标签并过晋升门
+          （一致率 ≥85% + conformal 覆盖 ≤α+2% + 审计无误判）后才可开 live。
+        </p>
+        <div class="form-grid">
+          <div class="field">
+            <label class="checkbox-label">
+              <input type="checkbox" v-model="senseCfg.enabled" @change="saveSense" />
+              启用语义分析器（总开关，改后保存生效）
+            </label>
+          </div>
+          <div class="field">
+            <label>灰度模式</label>
+            <select v-model="senseCfg.mode" @change="saveSense"
+              :disabled="!senseCfg.enabled">
+              <option value="collect">collect — 只采集观察</option>
+              <option value="shadow">shadow — 决策只比对不执行</option>
+              <option value="live">live — 真分流（需晋升门通过）</option>
+            </select>
+          </div>
+          <div class="field">
+            <label>观察/标签数（min_labels={{ senseCfg.min_labels }}）</label>
+            <input :value="`${senseCfg.obs} / ${senseCfg.labeled}`" disabled />
+          </div>
+        </div>
+      </div>
+    </section>
+
     <!-- 操作按钮 -->
     <div class="actions">
       <button class="btn-primary" :disabled="saving || !dirty" @click="save">
@@ -412,6 +451,7 @@ import {
   getLlamaStatus, listLocalModels, startLlama, stopLlama,
   downloadModel, watchDownload,
   getPool, upsertPoolEntry, deletePoolEntry, setPoolRoles, testPoolEntry, listPoolModels,
+  getMetrics,
 } from '@/api'
 import type {
   ModelSettings, ModelInfo, LlamaStatus, LocalModel,
@@ -961,7 +1001,34 @@ async function reset() {
   }
 }
 
-onMounted(load)
+// 语义分级（sense）灰度
+const senseCfg = reactive({ enabled: false, mode: 'collect', obs: 0, labeled: 0, min_labels: 500 })
+
+async function loadSense() {
+  try {
+    const [cfg, m] = await Promise.all([getConfig(), getMetrics()])
+    const s = (cfg as any).sense || {}
+    senseCfg.enabled = !!s.enabled
+    senseCfg.mode = s.mode || 'collect'
+    senseCfg.min_labels = s.policy?.min_labels ?? 500
+    const sm = (m as any).sense || {}
+    senseCfg.obs = sm.observations ?? 0
+    senseCfg.labeled = sm.labeled ?? 0
+  } catch { /* 静默 */ }
+}
+
+async function saveSense() {
+  try {
+    await updateConfig({ sense: { enabled: senseCfg.enabled, mode: senseCfg.mode } } as any)
+    saveMsg.value = { ok: true, msg: `✅ 语义分级已${senseCfg.enabled ? '启用（' + senseCfg.mode + '）' : '关闭'}` }
+  } catch (e: any) {
+    saveMsg.value = { ok: false, msg: '❌ 保存失败：' + (e?.response?.data?.detail || e?.message || e) }
+    await loadSense()
+  }
+  setTimeout(() => (saveMsg.value = null), 3000)
+}
+
+onMounted(() => { load(); loadSense() })
 onUnmounted(() => { _dlSSE?.close() })
 </script>