Finalize & Secure Blockchain WebApp

The core of my WebApp is up and running, built across Python, JavaScript, and C++. What remains is a round of meticulous polishing so the whole stack stands up to production-grade demands on mainnet. Blockchain infrastructure • Smart contracts need a last review, gas optimisation, and full unit / integration tests before I push them to the governance-enabled dedicated mainnet safe. • Validator and full-node setup is in place but still requires hardened configuration, monitoring hooks, and automated canary operations so rollouts can be staged safely. • The app already talks to several internal services; I now need clean, well-documented integration endpoints that survive node restarts and chain re-orgs. WebApp fine-tuning • User Interface: tidy up edge-case layouts, improve load times, and resolve two outstanding accessibility issues. • Backend functionality: streamline database queries, close a handful of race conditions, and align error handling with our logging standards. • API integration: confirm versioning, tighten rate-limiting, and finish the swagger/OpenAPI spec for external partners. Acceptance criteria – All smart-contract tests pass on testnet and mainnet dry-run with zero critical findings. – Nodes remain healthy through a 24-hour canary cycle without alert fatigue. – Front-end Lighthouse score ≥ 90 on desktop and mobile. – Backend latency p95 < 150 ms under projected load. – API spec published and validated against implemented routes. You’ll have direct access to the repo (GitHub), CI/CD pipelines (GitHub Actions), governance auditing, and our staging servers. Commits should be granular and reference the provided ticket numbers so I can track progress easily. Once this round is complete, I’ll cut the release candidate and schedule final sign-off.