fix: strip ANSI codes in _run_tests() so ✓/✗ count correctly

feat: replace handcrafted user_messages with real MOA session traces

feat: multi-turn tool-using RL environment (RFC 005 pattern)

feat: use real moav2 source as RL task suite — symlinked sandbox, 3 real service tasks

fix: embed task content directly, self-contained vitest sandbox

add .gitignore, remove build artifacts

initial moa rl environment