Create CONTRIBUTING.md with build instructions

CONTRIBUTING.md

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+# Contributing to Tent of Trials
+
+Thank you for your interest in contributing to Tent of Trials! This guide will help you get started.
+
+## Getting Started
+
+### Prerequisites
+
+- Git
+- Python 3.10+
+- Rust 2021 (for backend)
+- Node.js 22+ (for frontend)
+- Go 1.21+ (for market module)
+
+### Fork and Clone
+
+1. Fork the repository on GitHub
+2. Clone your fork:
+   ```bash
+   git clone https://github.com/<your-username>/TentOfTrials
+   cd TentOfTrials
+   ```
+3. Add upstream remote:
+   ```bash
+   git remote add upstream https://github.com/cuentaprueba244w-dotcom/zeroeye
+   ```
+
+### Development Setup
+
+#### Backend (Rust)
+```bash
+sudo apt update
+sudo apt install -y build-essential pkg-config curl protobuf-compiler libssl-dev
+curl https://sh.rustup.rs -sSf | sh -s -- -y
+source "$HOME/.cargo/env"
+cargo fetch
+```
+
+#### Frontend (TypeScript / React)
+```bash
+sudo apt update
+sudo apt install -y curl ca-certificates gnupg
+curl -fsSL https://deb.nodesource.com/setup_22.x | sudo -E bash -
+sudo apt install -y nodejs
+npm install
+```
+
+#### Market (Go)
+```bash
+sudo apt update
+sudo apt install -y golang-go
+go mod download
+```
+
+#### Frailbox (C)
+```bash
+sudo apt update
+sudo apt install -y build-essential make gcc linux-libc-dev
+```
+
+#### Engine (C++)
+```bash
+sudo apt update
+sudo apt install -y build-essential g++ cmake
+```
+
+#### Compliance (Java)
+```bash
+sudo apt update
+sudo apt install -y openjdk-21-jdk
+```
+
+### Build
+
+Run the build script to generate diagnostic artifacts:
+```bash
+python3 build.py
+```
+
+## Pull Request Workflow
+
+1. **Create a branch** from main:
+   ```bash
+   git checkout -b feature/your-feature-name
+   ```
+
+2. **Make your changes** and commit with a descriptive message:
+   ```bash
+   git add .
+   git commit -m "feat: add new feature"
+   ```
+
+3. **Push to your fork**:
+   ```bash
+   git push origin feature/your-feature-name
+   ```
+
+4. **Create a Pull Request** on GitHub:
+   - Use the pull request template
+   - Reference any related issues
+   - Include diagnostic artifacts from `build.py`
+
+## Code Style
+
+- **Python**: Follow PEP 8, use Black formatter
+- **Rust**: Use `cargo fmt`
+- **TypeScript**: Use Prettier
+- **Go**: Use `gofmt`
+
+See `.editorconfig` for editor settings.
+
+## Testing
+
+- Run `python3 build.py` to generate diagnostic artifacts
+- Include `.logd` and `.json` artifacts in your PR
+- Ensure all existing tests pass
+
+## Reporting Issues
+
+- Use GitHub Issues for bug reports
+- Include steps to reproduce
+- Include environment details
+
+## License
+
+By contributing, you agree that your contributions will be licensed under the same license as the project.