Harden architecture and evaluator experience

[HaithamAlMaamari]

Summary

• replace duplicated REST, Socket.IO, and browser-local behavior with shared runtime contracts, typed failures, transport-neutral commands, and an injectable store
• enforce exact expiry, bounded socket admission, secure production startup, fail-closed audits, coverage thresholds, and verified dependency/runtime upgrades
• add seeded scoring invariants, transport parity, conventional three-browser Playwright execution, evaluator docs/media, and a distinctive table-ticket visual system

Verification

• npm run verify:full
• 82 unit/integration tests
• 91.85% statements / 95.11% lines on the enforced core coverage surface
• 33 Chromium, Firefox, and WebKit flows
• production and full dependency audits
• spawned production-process HTTPS/origin/static/socket/API smoke

Scope

TableVote remains an intentionally process-local portfolio prototype with generated fictional venue data and no maintained public deployment.