docs: approve monthly settlement read model requirement

docs/srs/Interface/req-022_monthly-settlement-read-model-foundation.md

@@ -1,6 +1,6 @@
 # REQ-022 Monthly settlement read-model foundation
 
-- Status: Proposed
+- Status: Approved
 - Type: Interface
 - Priority: High
 - Owner: 렛저장인
@@ -8,6 +8,7 @@
 - Source Issues: `#3 [Feature] 월정산 페이지 기능 요구사항 정의`, `#4 [Design] 월정산 페이지 와이어프레임 수준 섹션 설계안`
 - Depends On: REQ-005, REQ-020, REQ-021
 - Created At (KST): 2026-07-11 20:56 KST
+- Approved At (KST): 2026-07-11 21:05 KST
 
 ## 1. Intent
 
@@ -46,3 +47,7 @@ Build the internal read-only monthly settlement summary model that later dashboa
 ## 5. Notes
 
 This REQ is the foundation slice split out of the deleted umbrella `REQ-022 Monthly settlement read-only dashboard`.
+
+## 6. Approval Notes
+
+- 2026-07-11 21:05 KST: Lead approval after user directed continued progression from the dcy-015 split. This first slice is approved independently because it is the foundation read model and does not introduce Streamlit UI, close persistence, MCP tools, or export side effects.