- Remove Docker deployment files (1panel doesn't use Docker)
- Unify .env files: .env.example -> .env (single config file)
- Merge start.sh and start-prod.sh into unified start.sh with --prod flag
- Update setup_dev_env.sh to use .env instead of .env.local
- Add DEPLOY.md with 1panel deployment guide
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
