feat: persist review workbench decisions (#1)

Merge dcy-012 / REQ-020 / BAT-016 implementation after green CI.

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

@@ -1,6 +1,6 @@
 # req-020: Review decision persistence and reconciliation workbench
 
-- Status: Approved
+- Status: Implemented
 - Type: Interface
 - Priority: High
 - Owner: 렛저장인
@@ -161,3 +161,52 @@
 
 #### Validation Plan
 - Validate through StagePilot doctor, index consistency checks, and CI after commit. Delivery validation remains owned by the later batch verification gate.
+
+
+### CHG-20260708-02
+- Date: 2026-07-08
+- Author: 가웨인
+
+#### Change Summary
+- BAT-016 local implementation and verification evidence completed; REQ-020 Status moved to Implemented.
+
+#### Intent
+- dcy-012 confirmed scope now has additive persistence, Streamlit/MCP integration, operating indicators, tests, and baseline document updates on feature branch `feat/bat-016-review-decision-workbench`.
+
+#### Acceptance Criteria Delta
+- Added:
+  - none
+- Updated:
+  - none
+- Removed:
+  - none
+
+#### Impacted Area Delta
+- Docs:
+  - `docs/batches/bat-016_20260708_review-decision-reconciliation-workbench/*`
+  - `docs/data-model.md`
+  - `docs/project-structure.md`
+  - `docs/runtime-flows.md`
+- Modules:
+  - `jarca_ledger_mcp/application/review_decision_service.py`
+  - `jarca_ledger_mcp/infrastructure/sqlite/schema.py`
+  - `jarca_ledger_mcp/infrastructure/sqlite/migrations.py`
+  - MCP, Streamlit, reconciliation, transfer, and uncategorized workbench integration surfaces
+- Tests:
+  - `tests/test_review_decision_workbench.py`
+  - schema-version expectations in existing DB health tests
+
+#### Delivery Trace Delta
+- Batches:
+  - BAT-016 release-candidate
+- Releases:
+  - none
+
+#### Revalidation Impact
+- Reverification Needed: yes before merge/release
+- Existing Implementation Invalidated: no
+- Status Recommendation: implemented-after-local-verification
+- Follow-up Action: push branch, open PR, and verify GitHub Actions CI.
+
+#### Validation Plan
+- Local evidence: `ruff check .`, targeted pytest, full pytest, MCP tool surface smoke, and DB safety smoke passed at 2026-07-08 07:11 KST. GitHub Actions CI remains the next external gate.