Submission docs

[codihuston]

Summary

Add production Docker images, demo compose files, and hackathon submission documentation. Enable frontend API_URL override for flexible deployment.

Changes

• Product changes
• Security changes
• Test changes
• Dependency changes
• UX changes
• Architecture changes
• Feature/code changes
• CI/CD changes
• Breaking changes

Testing

• Tests pass locally
• New tests added (if applicable)
• Manual testing completed

Related Issues

N/A

Screenshots (if applicable)

N/A

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Detailed Changes

CI/CD

• Add ml-service to CI pipeline
• Add missing deps to ml-service build

Production Images

• Add production Docker images and compose files
• Add prod images to demo compose files
• Add platform specification to demo compose files
• Remove gpu/cpu prefix from prod image names

Frontend

• Enable API_URL override via environment variable
• Fix: do not allow retry on completed tasks

Documentation

• Add required docs for hackathon submission
• Add demo limitations section

Tests

• Add frontend test hook
• Use isolated test app for thumbnail tests to avoid Redis dependency