Write comprehensive local environment setup instructions in README.md

[AlAfiz]

Description

A new developer should be able to clone the TradeFlow-Web repository and get it running on their local machine in under 5 minutes without having to ask questions on Discord/Slack.

Acceptance Criteria

• Update the README.md at the root of the project.
• List all strict prerequisites (Node.js version, Rust/Soroban CLI, Docker if needed for local Stellar network).
• Provide the exact commands to clone, install dependencies (npm install or pnpm install), and start the dev server.
• Explain how to set up the .env.local file.
• Provide a troubleshooting section for common Web3/Stellar setup errors.

Technical Details

• Use markdown code blocks for all terminal commands so they can be easily copy-pasted.

[2411015047-afk]

Hi! I can write comprehensive local environment setup instructions for the TradeFlow-Web repository. I have experience with Stellar/Soroban project setup and can make sure a new developer can get running in under 5 minutes. Happy to discuss scope and pricing. Rate: $30-50/hr depending on complexity.