feat: complete dcy-015 monthly settlement dashboard

Merge dcy-015 monthly settlement dashboard delivery after local and GitHub Actions verification.

docs/srs/Interface/req-023_monthly-settlement-dashboard-shell-kpi-cashflow-budget.md

@@ -1,6 +1,6 @@
 # REQ-023 Monthly settlement dashboard shell, KPI, cashflow, and budget sections
 
-- Status: Approved
+- Status: Implemented
 - Type: Interface
 - Priority: High
 - Owner: 렛저장인
@@ -8,6 +8,7 @@
 - Depends On: REQ-022
 - Created At (KST): 2026-07-11 20:56 KST
 - Approved At: 2026-07-12 09:01 KST
+- Implemented At (KST): 2026-07-12 12:24 KST
 
 ## 1. Intent
 
@@ -41,3 +42,10 @@ Add the visible Streamlit `월정산` page shell and implement the first user-fa
 ## 5. Notes
 
 This slice intentionally stops before operational blocker/import/asset sections to keep the first UI delivery small and verifiable.
+
+## Implementation Evidence
+
+- Batch: `BAT-018`
+- QC verdict: `.stagepilot/delivery/dcy-015_monthly-settlement/bat-018-qc-verdict-03.md`
+- Validation: independent QC rerun confirmed `ruff check .` and `pytest -q tests/test_dashboard_app.py` pass.
+- Scope note: REQ-024 blocker/import/account/asset sections and REQ-025 evidence/next-action hardening remain separate approved follow-on slices.

docs/srs/index.md

@@ -62,7 +62,7 @@
 | REQ-020 | Review decision persistence and reconciliation workbench | Interface | Implemented | High | 렛저장인 | [req-020_review-decision-persistence-reconciliation-workbench.md](Interface/req-020_review-decision-persistence-reconciliation-workbench.md) |
 | REQ-021 | Import provenance and sensitive-data policy | Data | Implemented | High | 렛저장인 | [req-021_import-provenance-sensitive-data-policy.md](Data/req-021_import-provenance-sensitive-data-policy.md) |
 | REQ-022 | Monthly settlement read-model foundation | Interface | Implemented | High | 렛저장인 | [req-022_monthly-settlement-read-model-foundation.md](Interface/req-022_monthly-settlement-read-model-foundation.md) |
-| REQ-023 | Monthly settlement dashboard shell, KPI, cashflow, and budget sections | Interface | Approved | High | 렛저장인 | [req-023_monthly-settlement-dashboard-shell-kpi-cashflow-budget.md](Interface/req-023_monthly-settlement-dashboard-shell-kpi-cashflow-budget.md) |
+| REQ-023 | Monthly settlement dashboard shell, KPI, cashflow, and budget sections | Interface | Implemented | High | 렛저장인 | [req-023_monthly-settlement-dashboard-shell-kpi-cashflow-budget.md](Interface/req-023_monthly-settlement-dashboard-shell-kpi-cashflow-budget.md) |
 | REQ-024 | Monthly settlement operational blockers, import/account, and asset status sections | Interface | Approved | High | 렛저장인 | [req-024_monthly-settlement-operational-blockers-import-account-asset-status.md](Interface/req-024_monthly-settlement-operational-blockers-import-account-asset-status.md) |
 | REQ-025 | Monthly settlement evidence, next actions, documentation, and verification hardening | Interface | Approved | Medium | 렛저장인 | [req-025_monthly-settlement-evidence-next-actions-verification-hardening.md](Interface/req-025_monthly-settlement-evidence-next-actions-verification-hardening.md) |
 
@@ -113,3 +113,4 @@
 - 2026-07-11 21:05 KST: REQ-022 read-model foundation을 독립 1차 slice로 승인했다.
 - 2026-07-12 00:45 KST: PR #5 merge와 local/CI 검증 근거로 REQ-022 read-model foundation을 Implemented 상태로 전환했다.
 - 2026-07-12 09:01 KST: confirm-req 기준으로 dcy-015 후속 Proposed REQ-023~REQ-025를 함께 Approved 상태로 전환했다. REQ-022는 이미 Implemented 상태로 유지한다.
+- 2026-07-12 12:24 KST: BAT-018 QC rerun 02 pass와 독립 `ruff`/`pytest -q tests/test_dashboard_app.py` 검증 근거로 REQ-023을 Implemented 상태로 전환했다.