The WordPress runtime autoloader (class-autoloader.php) was not scanning
services/opik/ — only services/. All four Opik classes live in that
subdirectory and would fatal on first use in production (class not found).
Composer's classmap covers all of includes/ recursively, so PHPUnit tests
passed. The runtime autoloader only scans explicit directory entries.
Adds 'services/opik/' to the scan list. No other services/ subdirs exist.
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