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/admin-h5/src/api/client.ts

@@ -636,9 +636,46 @@ export const adminApi = {
       updated_at: string
     }>('PUT', `/explore/star-configs/${id}`, body),
   rhythmConfigs: () =>
-    request<{ items: Array<Record<string, unknown>> }>('GET', '/explore/rhythm-configs'),
+    request<{
+      items: Array<{
+        id: string
+        code: string
+        title: string
+        active: boolean
+        system: boolean
+        updated_at: string
+      }>
+    }>('GET', '/explore/rhythm-configs'),
   rhythmConfig: (id: string) =>
-    request<Record<string, unknown>>('GET', `/explore/rhythm-configs/${id}`),
+    request<{
+      id: string
+      code: string
+      title: string
+      active: boolean
+      system: boolean
+      updated_at: string
+    }>('GET', `/explore/rhythm-configs/${id}`),
+  createRhythmConfig: (body: { code: string; title: string; active: boolean }) =>
+    request<{
+      id: string
+      code: string
+      title: string
+      active: boolean
+      system: boolean
+      updated_at: string
+    }>('POST', '/explore/rhythm-configs', body),
+  updateRhythmConfig: (
+    id: string,
+    body: { code: string; title: string; active: boolean },
+  ) =>
+    request<{
+      id: string
+      code: string
+      title: string
+      active: boolean
+      system: boolean
+      updated_at: string
+    }>('PUT', `/explore/rhythm-configs/${id}`, body),
   imageCardDecks: () =>
     request<{ items: Array<Record<string, unknown>> }>('GET', '/explore/image-card-decks'),
   imageCardDeck: (id: string) =>