lint: ruff format + one auto-fix so the push self-test is green again

`scripts/lint.sh --fix` from the pinned lint devshell: 90 Python files
reformatted (ruff format, mechanical) and one C420 (dict comprehension →
dict.fromkeys) in tests/unit/test_f211_sso_skip.py. The push self-test had
been failing at the lint stage since build 1313 (2026-08-31) on exactly
these files; nothing else changed.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01FqkQq3CDmFWcQ7u1LzoyRz

tests/bluesky-pds/custom/test_account_and_post.py

@@ -88,9 +88,9 @@ def test_account_lifecycle_and_post_roundtrip(live_app):
 
     # Step 1: PDS describe via goat — recipe self-identifies as did:web:<domain>
     out = _in_container(domain, f"goat pds describe {PDS_HOST_LOCAL} 2>&1")
-    assert (
-        f"did:web:{domain}" in out
-    ), f"goat pds describe did not contain expected DID 'did:web:{domain}'. Output:\n{out[:500]!r}"
+    assert f"did:web:{domain}" in out, (
+        f"goat pds describe did not contain expected DID 'did:web:{domain}'. Output:\n{out[:500]!r}"
+    )
 
     # Step 2: Create account (UUID-suffixed handle = no run-to-run collision)
     out = _goat_admin(
@@ -133,9 +133,9 @@ def test_account_lifecycle_and_post_roundtrip(live_app):
         assert s == 200, f"createRecord HTTP {s}: {body!r}"
         record_uri = (body or {}).get("uri", "")
         # URI format: at://<did>/app.bsky.feed.post/<rkey>
-        assert record_uri.startswith(
-            f"at://{new_did}/app.bsky.feed.post/"
-        ), f"unexpected record uri: {record_uri!r}"
+        assert record_uri.startswith(f"at://{new_did}/app.bsky.feed.post/"), (
+            f"unexpected record uri: {record_uri!r}"
+        )
         rkey = record_uri.rsplit("/", 1)[-1]
         assert rkey, f"no rkey in uri: {record_uri!r}"
 
@@ -148,9 +148,9 @@ def test_account_lifecycle_and_post_roundtrip(live_app):
         )
         assert s == 200, f"getRecord HTTP {s}: {body!r}"
         record_value = (body or {}).get("value", {})
-        assert (
-            record_value.get("text") == marker
-        ), f"post text did not round-trip: created={marker!r}, fetched={record_value.get('text')!r}"
+        assert record_value.get("text") == marker, (
+            f"post text did not round-trip: created={marker!r}, fetched={record_value.get('text')!r}"
+        )
         assert record_value.get("$type") == "app.bsky.feed.post"
     finally:
         # Step 6: Best-effort cleanup. (The per-run domain teardown will discard the volume