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>

docs/ECR/ECR-044-rhythm-config-write.md

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+# ECR-044
+
+**Title:** ExploreConfig · RhythmConfig 薄写面  
+**Status:** **Closed**（2026-08-13）  
+**Change Level:** L2  
+**Auth:** `ECR-044_WRITE_AUTHORIZATION.md` · Continuous Loop **仅本 ECR** · Closed 后 STOP  
+**Predecessor:** ECR-036 · ECR-043 · Candidate Review Approved  
+
+## Change
+
+1. Spec `ops-rhythm-config-write`  
+2. 复用 `admin.explore.write` + POST/PUT rhythm-configs + 审计  
+3. C 端 `GET /rhythm/configs`；`/rhythm` 无 active 空态、失败回退  
+4. Migration `000053` · OpenAPI · admin-h5  
+
+## Forbidden
+
+Star 再写 · Card · Scale · Prompt/Knowledge/Chunk · soft-delete · 支付 · UGC · Crisis/Handoff · **Closed 后自动 ECR-045** · ECR-008 Live Promote 解禁
+
+## Acceptance
+
+见 Spec §8 · TEST_REPORT/ECR-044 · CODE_REVIEW Approve.
+
+## Coding gate
+
+Done · Closed.