Add task062 solver (267/267 PASS) - reflection across axis, ONNX build pending

Final session update: task200 fixed, task028 confirmed on Kaggle (+0.87), more targets identified

Update analysis: task200 fixed (strict shape inference), task028 confirmed working (+0.87 on Kaggle)

Update analysis: task200 ONNX built (+3.5 pts est), task028 borderline

Add Agent 2 analysis: task rules cracked (028, 044, 069) and viability assessment