feat: complete F10 demo and submission readiness

[garykocsis]

Summary

Completes F10 — Demo / Submission Readiness and closes the required F0–F10 implementation ladder for Standby.

This slice exposes the G9-accepted protocol realization through a deterministic judge-facing demo, authoritative frontend instrumentation, reproducible command-line fallback, and submission-ready repository documentation.

What changed

• added the deterministic A1–A4 demo workflow over the canonical Anvil environment;
• added DemoActions.s.sol as the non-browser reproduction path;
• added lightweight judge-facing frontend instrumentation using authoritative on-chain state;
• added deterministic frontend verification against the real deployed protocol;
• added reproducible demo/setup instructions;
• added the root judge-facing README and frozen Mermaid execution/demo diagrams;
• refreshed final gas and coverage evidence;
• added the repository-level MIT license;
• completed Session 17 implementation, review, and retrospective evidence;
• updated project status to reflect F10 completion and G10 closure.

Canonical demo

The completed demo reproduces the accepted economic history:

1. A1 — Admit: S = 80k, O = 50k, Remaining = 50k
2. A2 — Compatible ordinary use: S = 65k, O = 50k, Remaining = 50k
3. A3 — Protected rejection: prospective S′ = 45k < O = 50k; transaction rejected and authoritative state remains unchanged
4. A4 — Exercise: Beneficiary receives exactly 50k MockUSDC; final S = 15k, O = 0, Remaining = 0

The complete browser workflow was also manually verified, including authoritative state reconstruction after page reload.

Verification

• forge fmt --check — clean
• forge build --sizes — successful
• forge test — 590 passed, 0 failed, 0 skipped
• CI profile — 590 passed, 0 failed, 0 skipped
• frontend lint/build — clean
• frontend deterministic verification — 36/36 checks passed
• canonical demo reproduced across fresh deterministic environments
• protocol-core coverage remains:
  • Lines: 99.42%
  • Statements: 98.52%
  • Branches: 92.31%
  • Functions: 100%

No production protocol semantics were changed by F10.

Gate status

Following independent review and the bounded judge-facing documentation corrections:

• F10 — Demo / Submission Readiness: COMPLETE
• G10: PASS / CLOSED
• F0–F10 critical-path implementation ladder: COMPLETE
• F9T — Public Testnet Deployment: OPTIONAL / OFF CRITICAL PATH

No prior gate was reopened.