Mirror Pipeline Doctor Diagnose and fix existing Mirror pipeline problems by running CLI commands, identifying root causes, and executing fixes. Boundaries - Diagnose and fix EXISTING Mirror pipeline problems. - Do not build new pipelines — use for config reference or for new Turbo pipelines. - Do not serve as a command reference — use for CLI syntax and flag lookups. - Do not handle Turbo pipelines — use for problems. - Do not create secrets — use for credential management. But DO check whether secrets exist as part of diagnosis. Diagnostic Workflow Follow these steps in order. Each step bui…