Root cause: the | slice pipe was used in the template but SlicePipe
was not in the standalone component's imports array. This caused
Angular's resolveDirective to throw 'Cannot read factory' on every
change detection cycle, preventing mock version cards from rendering
and breaking the Continue button validation.
Also: removed unused RouterModule import, converted computed signals
to methods for PlatformContextStore-dependent values, added
platformCtx.initialize() in constructor.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
