v3.0.0 - Part III Trilogy: Agentic-Jev-GRPO, CoEvo-Jev-GRPO & Tree-Jev-GRPO (36p EN + 23p CN)

Official v3.0.0 Release of the Part III LLM Reinforcement Learning Trilogy on Qwen/Qwen3.5-4B + Kev-4B: (1) Part III-A: Agentic-Jev-GRPO (12p EN + 8p CN PDF, 78.23% 4-Benchmark Agentic SOTA), (2) Part III-B: CoEvo-Jev-GRPO (12p EN + 8p CN PDF, 59.28% Olympiad/AIME SOTA, ECE 0.011), and (3) Part III-C: Tree-Jev-GRPO (12p EN + 7p CN PDF, 60.50% Formal Theorem Proving & Long-Horizon SOTA, -66% Dead-End FLOPs).