style: repo-wide lint pass — make the lint gate green again

Push builds have been RED on the lint step since ~build 209 from accumulated
formatting drift. This is the mechanical cleanup: ruff format + ruff --fix
(UP038 isinstance unions, SIM105 contextlib.suppress, UP031 f-strings, SIM115
tempfile context manager), shfmt -i 2 -ci, nixpkgs-fmt/statix/deadnix (merged
attrsets, dropped unused lib args), yamllint, and shell quoting fixes in
tests/lasuite-docs/setup_custom_tests.sh. No behaviour changes intended;
lint: PASS, unit tests: 138 passed.

tests/n8n/functional/test_login_state.py

@@ -91,6 +91,6 @@ def test_login_endpoint_returns_json(live_app):
     assert body is not None, f"/rest/login returned no parseable JSON: state={state}"
     # If it's a dict, it's the expected envelope; if it's a list, n8n shouldn't do that on this
     # endpoint, but accept either; only reject obvious non-shapes.
-    assert isinstance(body, (dict, list)), (
-        f"/rest/login returned unexpected JSON type {type(body).__name__}: {body!r}"
-    )
+    assert isinstance(
+        body, dict | list
+    ), f"/rest/login returned unexpected JSON type {type(body).__name__}: {body!r}"

tests/n8n/functional/test_rest_settings.py

@@ -72,9 +72,9 @@ def test_rest_settings_returns_json_with_known_keys(live_app):
     # (e.g. version 3.2.0+2.20.6).
     assert isinstance(body, dict), f"/rest/settings returned non-dict JSON: {type(body).__name__}"
     data = body.get("data") if "data" in body else body
-    assert isinstance(data, dict), (
-        f"/rest/settings response missing 'data' envelope: keys={list(body.keys())[:10]}"
-    )
+    assert isinstance(
+        data, dict
+    ), f"/rest/settings response missing 'data' envelope: keys={list(body.keys())[:10]}"
     # Bootstrap keys the editor SPA relies on across versions:
     #   - `userManagement`: the auth-mode dict (whether owner-setup is needed, smtp/email mode).
     #   - `defaultLocale`: i18n bootstrap; present on every n8n install.

tests/n8n/functional/test_workflow_roundtrip.py

@@ -136,7 +136,9 @@ def _get_workflow(domain: str, cookie_header: str, workflow_id) -> dict:
             return json.loads(resp.read())
     except urllib.error.HTTPError as e:
         body = e.read().decode(errors="replace")
-        raise AssertionError(f"GET /rest/workflows/{workflow_id} HTTP {e.code}: {body[:200]}") from e
+        raise AssertionError(
+            f"GET /rest/workflows/{workflow_id} HTTP {e.code}: {body[:200]}"
+        ) from e
 
 
 def test_workflow_create_and_read_back(live_app):
@@ -172,18 +174,21 @@ def test_workflow_create_and_read_back(live_app):
     # Read it back and prove the round-trip
     fetched = _get_workflow(domain, cookie, workflow_id)
     fpayload = fetched.get("data") if isinstance(fetched.get("data"), dict) else fetched
-    assert fpayload.get("id") in (workflow_id, str(workflow_id)), (
-        f"GET workflow id={fpayload.get('id')!r} != created id={workflow_id!r}"
-    )
-    assert fpayload.get("name") == name, (
-        f"workflow name didn't round-trip: created={name!r}, fetched={fpayload.get('name')!r}"
-    )
+    assert fpayload.get("id") in (
+        workflow_id,
+        str(workflow_id),
+    ), f"GET workflow id={fpayload.get('id')!r} != created id={workflow_id!r}"
+    assert (
+        fpayload.get("name") == name
+    ), f"workflow name didn't round-trip: created={name!r}, fetched={fpayload.get('name')!r}"
     nodes = fpayload.get("nodes") or []
-    assert isinstance(nodes, list) and len(nodes) == 1, (
-        f"workflow nodes didn't round-trip: expected 1 node, got {len(nodes)}"
-    )
+    assert (
+        isinstance(nodes, list) and len(nodes) == 1
+    ), f"workflow nodes didn't round-trip: expected 1 node, got {len(nodes)}"
     node = nodes[0]
-    assert node.get("type") == "n8n-nodes-base.manualTrigger", (
-        f"node type didn't round-trip: {node.get('type')!r}"
-    )
-    assert node.get("name") == "Manual Trigger", f"node name didn't round-trip: {node.get('name')!r}"
+    assert (
+        node.get("type") == "n8n-nodes-base.manualTrigger"
+    ), f"node type didn't round-trip: {node.get('type')!r}"
+    assert (
+        node.get("name") == "Manual Trigger"
+    ), f"node name didn't round-trip: {node.get('name')!r}"