Update README.md to provide a comprehensive overview of The Order monorepo, including repository structure, quickstart guide, development workflow, and contribution guidelines.

.gitignore

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+# Dependencies
+node_modules/
+.pnp
+.pnp.js
+
+# Testing
+coverage/
+*.lcov
+.nyc_output
+
+# Production
+build/
+dist/
+.next/
+out/
+*.tsbuildinfo
+
+# Environment variables
+.env
+.env.local
+.env*.local
+.env.enc
+*.env.enc
+!.env.example
+
+# Logs
+logs/
+*.log
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+lerna-debug.log*
+
+# OS
+.DS_Store
+*.swp
+*.swo
+*~
+.idea/
+.vscode/
+*.sublime-project
+*.sublime-workspace
+
+# Turbo
+.turbo/
+
+# TypeScript
+*.tsbuildinfo
+
+# Terraform
+*.tfstate
+*.tfstate.*
+.terraform/
+.terraform.lock.hcl
+
+# Kubernetes
+*.kubeconfig
+
+# Secrets
+secrets/
+*.key
+*.pem
+*.crt
+!*.example.key
+!*.example.pem
+!*.example.crt
+
+# SOPS
+.sops.yaml
+
+# Temporary files
+tmp/
+temp/
+*.tmp
+
+# Submodules (optional - uncomment if you want to track submodule changes)
+# .git/modules/
+