The stage contract and profiles are in 4b013fb. This commit adds the
measured balance (the #120 grid on identical seeds and the 12-seed raid),
the replay/export video with four stills, and updates the user and handoff
documentation. The visual files are provided for human review; the agent
that captured them has no image input and checked only the encoded
parameters, shot boundaries and the first large plume.
Co-Authored-By: Kimi Code <noreply@kimi.com>