Add developer setup guide for Mac Apple Silicon

[Copilot]

New developer onboarding guide for setting up the RAG Transcript System on MacBook with Apple Silicon.

Changes

• SETUP.md - Comprehensive step-by-step guide covering:

  • Prerequisites (Homebrew, Git, Docker Desktop, Node.js via nvm)
  • Backend setup with Docker Compose (6 containers)
  • Frontend setup with npm
  • Verification steps
  • Optional Ollama setup for local LLM
  • Apple Silicon-specific troubleshooting (Docker resource allocation, Rosetta, common issues)

• README.md - Added reference to SETUP.md in Development and Documentation sections

Quick Start Preview

# Prerequisites
brew install git
# Install Docker Desktop (Apple Silicon version)
nvm install 18

# Backend
docker compose up -d
docker compose exec app alembic upgrade head
curl http://localhost:8000/health

# Frontend
cd frontend && npm install && npm run dev

Original prompt

i am a new developer and i want to pull this request into my mac book m5. this is a new machine. what do i need to do and what are the steps by step guide?

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[simoncht]

@copilot did you write anything to setup.md?

[Copilot]

@copilot did you write anything to setup.md?

Yes, I created a comprehensive setup guide in SETUP.md (387 lines). It covers:

• Prerequisites: Homebrew, Git, Docker Desktop for Mac (with Apple Silicon settings), Node.js via nvm
• Clone & Backend Setup: Docker Compose, storage directories, environment variables, database migrations
• Frontend Setup: npm install, environment variables, dev server
• Verification Steps: Health checks and testing video ingestion
• Optional Ollama Setup: For local LLM
• Troubleshooting: Apple Silicon-specific issues, common problems, and useful commands

The guide was added in commit 584c969 with a follow-up fix in 1a5ea6f to address code review feedback.