fix: sync image migration inventory to 0031

tests/release/test_image_release.py

@@ -33,8 +33,8 @@ class RecordingRunner:
         if command[:3] == ["docker", "run", "--rm"] and "urllib.request" in command[-1]:
             enabled = "TARGET:8000" not in command[-1] and "plain" not in command[-1]
             return image_release.Result('{"status":"ok","db_enabled":' + str(enabled).lower() + '}')
-        if command[:3] == ["docker", "run", "--rm"] and "alembic_version" in command[-1]: return image_release.Result("20260820_0030\n")
-        if command[:3] == ["docker", "run", "--rm"] and "health-check" in command: return image_release.Result('{"database_revision":"20260820_0030"}\n')
+        if command[:3] == ["docker", "run", "--rm"] and "alembic_version" in command[-1]: return image_release.Result("20260913_0031\n")
+        if command[:3] == ["docker", "run", "--rm"] and "health-check" in command: return image_release.Result('{"database_revision":"20260913_0031"}\n')
         return image_release.Result()
 
 def artifacts(tmp_path: Path):
@@ -74,12 +74,12 @@ def test_project_version_must_match_release_tag(tmp_path):
 def test_installed_smoke_has_import_cli_exact_inventory_and_cleanup():
     inventory = tuple(
         [f"202601{i:02d}_{i:04d}_migration.py" for i in range(1, 30)]
-        + ["20260820_0030_portfolio_ledger_keyset_index.py"]
+        + ["20260820_0030_portfolio_ledger_keyset_index.py", "20260913_0031_corporate_actions.py"]
     )
     runner = RecordingRunner(); image_release.smoke_installed_image("candidate", inventory, runner, 17)
     runs = [x[0] for x in runner.commands if x[0][:2] == ["docker","run"]]
     assert len(runs) == 3 and all("--read-only" in x and "none" in x for x in runs)
-    assert "migration_inventory" in runs[-1][-1] and "20260820_0030" in runs[-1][-1]
+    assert "migration_inventory" in runs[-1][-1] and "20260913_0031" in runs[-1][-1]
     assert len([x for x in runner.commands if x[0][:3] == ["docker","rm","--force"]]) == 3
 
 def _assert_exact_startup_cleanup(commands: list[list[str]]) -> None:

tests/release/test_release_contracts.py

@@ -50,7 +50,7 @@ def test_workflow_actions_are_commit_pinned_and_verify_version_is_project_derive
     assert 'RELEASE_VERSION=v0.1.3' not in verify
 
 
-def test_release_version_and_migration_contract_are_v021_head_0030():
+def test_release_version_and_migration_contract_has_current_head_0031():
     project = (REPO / "pyproject.toml").read_text()
     config = (REPO / "app/core/config.py").read_text()
     migrations = sorted(