⚡ V1 → V2 CHANGES
Added: Upper traps (DB Shrugs), Forearms (Hammer Curls), Tricep long head (Overhead Extension), Hamstring knee-flexion (Leg Curl), Soleus (Seated Calf Raise), Full core block (Hanging Leg Raise, Cable Crunch, Pallof Press, Ab Rollout, Back Extension). All 28 muscle groups now directly targeted.