diff --git a/loopx/cli_commands/shared_goal_alignment.py b/loopx/cli_commands/shared_goal_alignment.py
index c2bf98e064..29d270ff67 100644
--- a/loopx/cli_commands/shared_goal_alignment.py
+++ b/loopx/cli_commands/shared_goal_alignment.py
@@ -15,6 +15,7 @@
 from ..control_plane.goals.shared_goal_alignment import (
     project_shared_goal_alignment,
 )
+from ..control_plane.coordination.local_authority import CanonicalAuthorityRequired
 from ..control_plane.todos.path_resolution import resolve_todo_state_path
 
 PrintPayload = Callable[
@@ -161,6 +162,10 @@ def handle_shared_goal_alignment_command(
         )
         payload = {"ok": True, **projection}
         exit_code = 0
+    except CanonicalAuthorityRequired as exc:
+        payload = {**exc.payload, "ok": False, "error_code": exc.code,
+            "agent_id": getattr(args, "agent_id", None), "error": str(exc)}
+        exit_code = 1
     except Exception as exc:
         payload = {
             "ok": False,
diff --git a/loopx/control_plane/scheduler/monitor_poll_writeback.py b/loopx/control_plane/scheduler/monitor_poll_writeback.py
index 8f7edefa99..b8f12f7e78 100644
--- a/loopx/control_plane/scheduler/monitor_poll_writeback.py
+++ b/loopx/control_plane/scheduler/monitor_poll_writeback.py
@@ -143,9 +143,11 @@ def write_monitor_poll_todo_state(
             runtime_root=runtime_root,
             goal_id=goal_id,
         )
-    except CanonicalAuthorityRequired:
+    except CanonicalAuthorityRequired as error:
         if not execute or not monitor_effect_id or lease_proof is not None:
-            raise
+            raise CanonicalAuthorityRequired(
+                goal_id=goal_id, operation="monitor_poll", payload=error.payload,
+            ) from error
         # This explicit original-operation read can only return an immutable
         # business receipt. Its existing typed owner validates exact intent;
         # no receipt still refuses below, without reopening the retired writer.
diff --git a/tests/control_plane/test_shared_goal_alignment_cli.py b/tests/control_plane/test_shared_goal_alignment_cli.py
index 22ae236152..d73dc8b6f0 100644
--- a/tests/control_plane/test_shared_goal_alignment_cli.py
+++ b/tests/control_plane/test_shared_goal_alignment_cli.py
@@ -35,6 +35,31 @@ def _run_alignment_cli(
     return exit_code, payload, captured.out
 
 
+@pytest.mark.parametrize("command", ["shared-goal-alignment", "goal-alignment"])
+def test_unmigrated_alignment_preserves_typed_recovery_without_writes(tmp_path, capsys, command):
+    project = tmp_path / "project"
+    project.mkdir()
+    state = project / "STATE.md"
+    state.write_text("# Goal\n\n## Agent Todo\n\n", encoding="utf-8")
+    runtime = tmp_path / "runtime"
+    registry = tmp_path / "registry.json"
+    registry.write_text(json.dumps({"common_runtime_root": str(runtime), "goals": [{
+        "id": GOAL_ID, "repo": str(project), "state_file": str(state),
+        "coordination": {"registered_agents": ["agent-a"]},
+    }]}), encoding="utf-8")
+    before = state.read_bytes(), registry.read_bytes()
+    code, payload, _ = _run_alignment_cli(capsys, registry, command,
+        "--goal-id", GOAL_ID, "--agent-id", "agent-a", "--format", "json")
+    assert code == 1 and payload["ok"] is False
+    assert payload["error_code"] == "canonical_authority_required"
+    assert payload["write_admitted"] is False
+    assert payload["legacy_fallback_used"] is False
+    assert payload["decision_read_from_provider"] is False
+    assert payload["recovery"] == {"action": "migrate_goal_authority", "backup_required": True}
+    assert (state.read_bytes(), registry.read_bytes()) == before
+    assert not (runtime / "authority").exists()
+
+
 def test_cli_projects_shared_goal_alignment_json(
     tmp_path: Path,
     capsys: pytest.CaptureFixture[str],
@@ -185,7 +210,7 @@ def test_cli_missing_goal_fails_closed(
     assert "nonexistent-goal" in payload["error"]
 
 
-def test_cli_missing_state_file_fails_closed(
+def test_cli_missing_display_keeps_canonical_read_only_basis(
     tmp_path: Path,
     capsys: pytest.CaptureFixture[str],
 ) -> None:
@@ -209,9 +234,11 @@ def test_cli_missing_state_file_fails_closed(
         "json",
     )
 
-    assert exit_code == 1
-    assert payload["ok"] is False
-    assert "missing" in payload["error"]
+    assert exit_code == 0 and payload["ok"] is True
+    assert payload["read_only"] is True
+    assert payload["source_basis"]["revision_basis"] == "canonical_todo_snapshot"
+    assert payload["frontier_counts"]["current_agent_claimed_advancement_count"] == 1
+    assert not paths["state_file"].exists()
 
 
 def test_cli_does_not_use_current_directory_when_registered_state_is_missing(
@@ -232,6 +259,9 @@ def test_cli_does_not_use_current_directory_when_registered_state_is_missing(
         paths["state_file"].read_text(encoding="utf-8"),
         encoding="utf-8",
     )
+    foreign_state.write_text(foreign_state.read_text(encoding="utf-8")
+        + "\n- [ ] Foreign-only work\n  <!-- loopx:todo todo_id=todo_foreign_only status=open -->\n", encoding="utf-8")
+    foreign_before = foreign_state.read_bytes()
     monkeypatch.chdir(foreign_project)
 
     exit_code, payload, _ = _run_alignment_cli(
@@ -246,9 +276,12 @@ def test_cli_does_not_use_current_directory_when_registered_state_is_missing(
         "json",
     )
 
-    assert exit_code == 1
-    assert payload["ok"] is False
-    assert "goal state file is missing" in payload["error"]
+    assert exit_code == 0 and payload["ok"] is True
+    assert payload["read_only"] is True
+    assert payload["source_basis"]["revision_basis"] == "canonical_todo_snapshot"
+    assert payload["frontier_counts"]["current_agent_claimed_advancement_count"] == 1
+    assert "todo_foreign_only" not in json.dumps(payload)
+    assert foreign_state.read_bytes() == foreign_before
 
 
 @pytest.mark.parametrize("provider", ["file", "sqlite"])