Docs: README updated with clearer env setup, ports, and webhook configuration

Documentation

• Updated the project description to mention LLM-based changelog analysis and corrected the hosted subdomain example to suprlogs.com.
• Clarified the apps list to describe the API server responsibilities (health, Inngest, Clerk and GitHub webhooks) and updated the web dashboard tech notes.backend
• Clarified environment setup: copy .env examples to the monorepo root, store secrets in root .env.local, and documented the env load order for each app.devops
• Clarified start and build commands and explained what pnpm services:start and pnpm dev do for local development.devops
• Added a clear ports table (4700–4716) and troubleshooting tips for address-in-use errors and Supabase internal ports.devops
• Added detailed webhook configuration for Clerk and GitHub including endpoint paths, signature header verification, and required environment variables.integrations
• Documented local webhook testing with ngrok and step-by-step setup for Clerk webhooks and GitHub App webhooks, including how to store signing secrets and private keys in env vars.integrations
• Documented production deployment to Railway with instructions for setting service root, build/start commands, required environment variables, custom domain setup, and Inngest registration.devops
• Added testing and database workflow commands (pnpm test, pnpm db:reset, pnpm db:studio, pnpm db:types) and migration guidance for local Supabase.database
• Improved README structure and quickstart flow with separators and clearer step ordering for new contributors.