Fix the gate: wrap a line swift-format --strict rejects

PR #352 landed with one [LineLength] violation, so `make check` exited 2 on
main. Formatter output only, no semantic change.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016n4hSXVu6wLR4RCfnt6PPG

Author: scgopi

graphcode/Tests/CodexThreadResolverTests.swift

@@ -71,7 +71,8 @@ struct CodexThreadResolverTests {
     try FileManager.default.createDirectory(at: directory, withIntermediateDirectories: true)
     defer { try? FileManager.default.removeItem(at: directory) }
     for name in ["state_4.sqlite", "state_12.sqlite", "goals_1.sqlite", "state_5.sqlite-wal"] {
-      FileManager.default.createFile(atPath: directory.appendingPathComponent(name).path, contents: nil)
+      FileManager.default.createFile(
+        atPath: directory.appendingPathComponent(name).path, contents: nil)
     }
     let original = CodexThreadResolver.codexDirectory
     CodexThreadResolver.codexDirectory = directory