The generic build destination fixed the compile step, but creating the simulator failed: tail -1 selected iPhone-6s-Plus, which iOS 26 rejects as 'Incompatible device'. Select the highest-numbered iPhone model instead, which is compatible with the newest runtime. Also drop the maestro --device flag and rely on auto-selecting the single booted sim. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>