feat: add repository rename orchestration CLI

Assistant: codex
Assistant-Model: gpt-5.6-sol
Assistant-Session: 01a049a4-ee9f-78e1-9d66-2cb0f9bea3e3

tests/test_repository_rename_api.py

@@ -154,6 +154,55 @@ async def test_dry_run_has_no_persistent_changes(client, test_engine, rename_set
     assert after == before
 
 
+@pytest.mark.asyncio
+async def test_client_operation_id_is_idempotent_and_globally_discoverable(
+    client, rename_setup
+):
+    repo, _forge = rename_setup
+    preflight = await _preflight(client, repo["id"])
+    operation_id = str(uuid.uuid4())
+    confirmation = f"rename:{repo['id']}:flex-auth:access-engine"
+    payload = {
+        "operation_id": operation_id,
+        "new_slug": "access-engine",
+        "preflight_token": preflight["preflight_token"],
+        "confirmation": confirmation,
+        "actor": "helixforge-test",
+    }
+
+    created = await client.post(
+        f"/repos/{repo['id']}/rename/operations", json=payload
+    )
+    replay = await client.post(
+        f"/repos/{repo['id']}/rename/operations",
+        json={**payload, "preflight_token": "expired-after-creation"},
+    )
+    assert created.status_code == replay.status_code == 201
+    assert created.json()["id"] == replay.json()["id"] == operation_id
+    assert created.json()["no_op"] is False
+    assert replay.json()["no_op"] is True
+
+    discovered = await client.get(
+        f"/repository-renames/operations/{operation_id}"
+    )
+    assert discovered.status_code == 200
+    assert discovered.json()["repo_id"] == repo["id"]
+    assert discovered.json()["phase"] == "preflighted"
+
+    collision = await client.post(
+        f"/repos/{repo['id']}/rename/operations",
+        json={**payload, "new_slug": "another-name"},
+    )
+    assert collision.status_code == 412
+    assert collision.json()["detail"]["code"] == "repository_rename_precondition_failed"
+
+    actor_collision = await client.post(
+        f"/repos/{repo['id']}/rename/operations",
+        json={**payload, "actor": "different-actor"},
+    )
+    assert actor_collision.status_code == 412
+
+
 @pytest.mark.asyncio
 async def test_interrupt_resume_every_phase_and_preserve_uuid(client, rename_setup):
     repo, forge = rename_setup