Publicly Discoverable Gyms (Gym Profile Sharing)

Add the ability for a user to publish their gym profile so others who are nearby can see it and add it to their app without having to manually configure everything themselves. This would make it much easier for gym-goers to set up their equipment profiles by discovering existing configurations from other users at the same gym. Key features: - Option to publish a gym profile publicly - Location-based discovery of nearby gym profiles - One-tap import of shared gym configurations - Sync updates: Allow profile creators to push updates that sync to everyone who has added that specific profile - Per-gym toggle for automatic updates/syncing (so users can choose whether to receive automatic updates or keep their local version static) - Attribution to original profile creator - Moderation tools to report inaccurate profiles