Solution: LP-0002 Private M-of-N Multisig

[Tranquil-Flow]

LP-0002 resubmission after addressing reviewer feedback from PR #68.

Reviewer feedback addressed:

1. Deploy on real LEZ testnet — The wrapper program is now deployed and executed on the public LEZ testnet (https://testnet.lez.logos.co/). Deploy tx 82516880... in block 39547, execute tx cb8bfd5... in block 39548, signed by funded testnet account 6iArKUXxhUJqS7kCaPNhwMWt3ro71PDyBj7jwAyE2VQV. Evidence recorded in submission/TESTNET_EVIDENCE.json.

2. Document per-operation CU/gas — submission/LEZ_COST_BENCHMARKS.json records the explicit CU-unavailable rationale (LEZ tooling does not expose stable per-tx CU counters) along with payload/account/receipt/block metrics.

3. demo.sh end-to-end against live sequencer with RISC0_DEV_MODE=0 — The heavy-lane path (scripts/demo-heavy-lane.sh) runs the real end-to-end flow against the LEZ testnet with RISC0_DEV_MODE=0 proof artifacts.

4. e2e-against-sequencer integration tests in CI — CI now includes .github/workflows/ci.yml alongside .gitlab-ci.yml, both green on the default branch.

Additional improvements since PR #68:

• Fresh narrated demo: https://youtu.be/Wssfp_rkC54
• Native Qt/QML Basecamp .lgx package with alice/bob install evidence
• RISC0 wrapper localnet compact-receipt transport

Public repo: https://github.com/Tranquil-Flow/lp-0002-private-multisig

Thank you for the detailed feedback on #68. All points have been addressed.

[github-actions]

✅ Validation passed

A reviewer will assess against the prize criteria.
ℹ️ Solution submission for LP-0002.
ℹ️ Checking repo: https://github.com/Tranquil-Flow/lp-0002-private-multisig

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Automated check. See solution template and TERMS.