docs: align final Afterlight release claims

[dolepee]

Summary

• lead with the recovery product instead of the judging rubric
• classify the public release honestly as a capacity-limited Mainnet Recovery Drill
• reconcile historical zero allowance with the restored one-exit allowance
• make founder-operated E3 and relayer liveness limits explicit
• prefer Starkscan for the public E3 receipt

Verification

• git diff --check
• npm --prefix client run verify:mainnet

This draft intentionally excludes the final demo_video URL. That metadata will be added only after the native-resolution recording passes the required quality gate. Any resulting commit will require a new exact-head Codex review before merge.