fix: resolve SRS conflicts from batch verification analysis (CONFLICT-1~4)

Conflict Resolutions:
- CONFLICT-1 (High): Fix REQ-006 ownership scope — implement owner_user_id filtering
  * Change app/api/v1_assets.py: owner_user_id=None → owner_user_id=auth.user_id
  * Update docs/runtime-flows.md to reflect service-token owner-scoped portfolio filtering
  * Add regression test in tests/test_v1.py for ownership boundary

- CONFLICT-2 (Medium): Transition REQ-001/002/003 to Implemented
  * REQ-001: local-db-validation-scenarios (via confirm-req-implemented bat-007)
  * REQ-002: alembic-runtime-schema-ownership (via confirm-req-implemented bat-007)
  * REQ-003: local-db-operations-runbook-and-baseline-updates (via confirm-req-implemented bat-007)
  * Update docs/srs/index.md with status transitions

- CONFLICT-3 (Low): Document REQ-012 rotate lifecycle
  * Add rotate lifecycle notes to REQ-012 (change-req req-012)
  * Clarify runtime_id change behavior and trex-basic reconnection requirements

- CONFLICT-4 (Low): Clarify REQ-005 AC-2 endpoint path
  * Change REQ-005 AC-2: 'POST /auth/tokens or equivalent' → 'POST /auth/service-tokens'
  * Update docs/srs/index.md change log with change-req entries

Documentation Updates:
- Update BAT-001 verification status with conflict resolution evidence
- Update release rel-001 with verified status confirmation
- Add change log entries for all conflict resolutions with dates and references

Testing:
- Add ownership boundary test to test_v1.py
- Verify filter works with auth.user_id context

tests/test_v1.py

@@ -178,6 +178,10 @@ def test_v1_assets_returns_asset_list(monkeypatch) -> None:
     assert item["quantity"] == 10.0
     assert item["strategy_params"] == {}
     assert item["strategy_type"] is None
+    mock_repo.list_portfolios_with_strategies.assert_called_once_with(
+        owner_user_id="user-1",
+        include_disabled=False,
+    )
 
 
 def test_v1_assets_status_filter(monkeypatch) -> None: