docs: approve review workbench req and batch

docs/srs/Interface/req-020_review-decision-persistence-reconciliation-workbench.md

@@ -1,6 +1,6 @@
 # req-020: Review decision persistence and reconciliation workbench
 
-- Status: Proposed
+- Status: Approved
 - Type: Interface
 - Priority: High
 - Owner: 렛저장인
@@ -119,3 +119,45 @@
 
 #### Validation Plan
 - Before implementation approval, verify additive migration safety, persisted decision/session round-trip, MCP and Streamlit contract compatibility, full pytest, lint, dashboard smoke, DB safety smoke, and baseline document updates.
+
+### CHG-20260708-01
+- Date: 2026-07-08
+- Author: 가웨인
+
+#### Change Summary
+- REQ-020 승인 게이트를 통과해 Status를 Approved로 전환했다.
+
+#### Intent
+- dcy-012 confirmed 범위가 delivery input으로 충분히 구체화되었고, Priority/Owner/범위/Acceptance Criteria에 승인 blocker가 남아 있지 않아 batch planning 대상으로 확정하기 위해 승인했다.
+
+#### Acceptance Criteria Delta
+- Added:
+  - none
+- Updated:
+  - none
+- Removed:
+  - none
+
+#### Impacted Area Delta
+- Docs:
+  - `docs/srs/Interface/req-020_review-decision-persistence-reconciliation-workbench.md`
+  - `docs/srs/index.md`
+- Modules:
+  - none
+- Tests:
+  - none
+
+#### Delivery Trace Delta
+- Batches:
+  - none yet
+- Releases:
+  - none
+
+#### Revalidation Impact
+- Reverification Needed: yes
+- Existing Implementation Invalidated: no
+- Status Recommendation: keep-current
+- Follow-up Action: run `suggest-batch-reqs` or draft the batch, then issue the StagePilot `lead -> delivery-runner` kickoff after the batch boundary is ready.
+
+#### Validation Plan
+- Validate through StagePilot doctor, index consistency checks, and CI after commit. Delivery validation remains owned by the later batch verification gate.