refactor(scenario): delete predator_evade; template is the canonical scenario

refactor: restructure proteus into game/web subpackages

feat(cp8): CLI persona memory generation + scored run

feat(cp8): proteus run --persona <id>

feat(cp8): auto-GIF after run/play (default on, --no-gif to disable)

feat(cp7): proteus run --memory {none,generate,latest,<path>}

feat(cp7): proteus memory subcommand

feat(cp6): CLI compare — aggregate human/LLM traces by (model, difficulty)

fix(cp5): _cmd_play returns rc=2 on stdin EOF (no traceback, no partial-trace crash)

feat(cp5): CLI replay --visual/--png/--fps (text stays default)

feat(cp5): CLI 'play' subcommand — human session via stdin

feat(cp4): CLI (run / list-scenarios / replay) over fake + real providers