End-to-End Bug Fixing (Web Portal + Mobile App + AI Agent + Blockchain Utilities)

I have an integrated ecosystem made up of a WordPress/React web portal, a Flutter mobile app, a Python-based AI automation agent, and a lightweight blockchain utility used for token transfers and gas estimation. Each layer is suffering from production-blocking bugs and I need them resolved in a single, coordinated sprint so the entire stack can go live again.

Here is the current situation:

• Web portal – calls to several REST endpoints now fail, which breaks user search and any page that relies on that data.
• Mobile application – the latest Flutter build throws errors during compilation and, once running, no longer maintains real-time data sync with the backend.
• AI agent – Python workflow hangs on long-running tasks, timing out before it triggers the next step in the pipeline.
• Blockchain utility – token transfers intermittently revert and gas limits are mis-calculated, leading to excessive fees.

Deliverables I will verify:

1. Web portal once again consumes the existing APIs without 4xx/5xx responses and search returns complete, paginated results.
2. Flutter project builds cleanly for both Android and iOS; background sync remains stable for at least 24 hours in test.
3. AI agent completes an end-to-end run on sample data in under five minutes with no timeout.
4. Blockchain tool sends a test transaction that settles successfully on-chain with correct gas usage reported.

You will have direct access to the repos (Git, Bitbucket), staging servers, and current CI/CD pipelines (GitHub Actions + Firebase App Distribution). I am happy to answer architecture questions quickly so you can focus on the fixes rather than discovery. Once each item passes the acceptance checks above, I will merge to main and schedule a production release.