chore: commit current workspace changes

docs/srs/Exception/req-019_ledger-outbox-durability-idempotency.md

@@ -1,6 +1,6 @@
 # req-019: ledger outbox durability + correlation_id 멱등
 
-- Status: Approved
+- Status: Implemented
 - Type: Exception
 - Priority: High
 - Owner: project maintainers
@@ -114,3 +114,38 @@
 
 #### Validation Plan
 - 기존 Acceptance Criteria 로 batch delivery 에서 검증.
+
+### CHG-20260604-03
+- Date: 2026-06-04
+- Author: Justin Ko
+
+#### Change Summary
+- Status 변경: Approved -> Implemented. BAT-006 release-candidate verification evidence 기반.
+
+#### Intent
+- ledger outbox durability + correlation_id 멱등 + outcome 분류 구현과 검증 evidence 확보 후 구현 완료 상태로 동기화.
+
+#### Acceptance Criteria Delta
+- Added/Updated/Removed: 없음
+
+#### Impacted Area Delta
+- Docs/Modules/Tests: 없음 (변경은 상태 전이만)
+
+#### Delivery Trace Delta
+- Batches:
+  - BAT-006 (release-candidate)
+- Releases:
+  - none
+
+#### Revalidation Impact
+- Reverification Needed: no
+- Existing Implementation Invalidated: no
+- Status Recommendation: Implemented
+- Follow-up Action: release 단계는 별도 진행
+
+#### Validation Plan
+- AC-1: tests/application/test_execution_ledger.py::test_duplicate_execution_id_results_in_zero_duplicate_in_ledger.
+- AC-2: tests/application/test_execution_ledger.py::test_retryable_failure_then_eventually_completes + tests/application/test_ledger_outbox.py::test_writer_retries_until_success.
+- AC-3: tests/application/test_execution_ledger.py::test_conflict_blocks_without_auto_retry + tests/application/test_ledger_outbox.py::test_writer_marks_conflict_blocked_and_does_not_retry.
+- AC-4: tests/application/test_execution_ledger.py::test_duplicate_completed_when_reprocessing_terminal_item + test_duplicate_execution_id_results_in_zero_duplicate_in_ledger.
+- AC-5: tests/application/test_execution_ledger.py::test_slot_transition_proceeds_when_ledger_is_down.