feat(ECR-044): RhythmConfig 写面闭环并 Closed

复用 admin.explore.write、POST/PUT+审计、C端 GET /rhythm/configs、
H5 无 active 空态/失败回退；migration 000053。ExploreConfig Loop STOP，禁自动 ECR-045。

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/user-h5/src/pages/LifeRhythmPage.vue

@@ -11,8 +11,15 @@
     </template>
 
     <div class="body">
+      <div v-if="!configAvailable && !report" class="empty-gate">
+        <HomeToolIcon name="rhythm" :size="56" />
+        <p class="empty-title">节律配置暂未开放</p>
+        <p class="empty-sub">运营尚未启用节律配置，请稍后再来</p>
+        <button class="cta-off" type="button" disabled>生成我的节律</button>
+      </div>
+
       <RhythmIntro
-        v-if="needBirth && !report"
+        v-else-if="needBirth && !report"
         v-model:year="year"
         v-model:month="month"
         v-model:day="day"
@@ -60,6 +67,7 @@ import { useLifeRhythmPage } from '../composables/useLifeRhythmPage'
 const {
   loading,
   needBirth,
+  configAvailable,
   error,
   report,
   paying,
@@ -103,4 +111,35 @@ const {
   margin-top: 2px;
 }
 .body { padding: 8px 16px 88px; }
+.empty-gate {
+  text-align: center;
+  padding: 28px 16px 12px;
+}
+.empty-title {
+  font-family: var(--font-display);
+  font-size: 20px;
+  font-weight: 700;
+  margin-top: 10px;
+  letter-spacing: 0.06em;
+}
+.empty-sub {
+  font-size: 13px;
+  color: rgba(0, 0, 0, 0.42);
+  margin-top: 8px;
+  line-height: 1.5;
+}
+.cta-off {
+  margin-top: 16px;
+  width: 100%;
+  max-width: 320px;
+  padding: 13px;
+  border: none;
+  border-radius: 22px;
+  color: #fff;
+  font-size: 15px;
+  font-weight: 600;
+  background: linear-gradient(135deg, #ff7a6e, var(--color-primary));
+  opacity: 0.45;
+  cursor: not-allowed;
+}
 </style>