- Add CORSMiddleware (disabled by default, enabled via CORS_ENABLED=true)
- Add cors_enabled, cors_allowed_origins, cors_allow_credentials,
cors_allowed_methods, cors_allowed_headers settings to config.py
- Add parse_comma_separated_list validator for CORS list env vars
- Insert CORS middleware between SessionMiddleware and ProxyHeaders
so preflight runs before CSRF/auth but after proxy-header processing
- Document CORS env vars in .env.demo with rationale for proxy-first approach
- Mark CORS TODO as completed in SECURITY_AUDIT.md
- Add tests/test_cors.py with 12 unit and integration tests
Closes#175
Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>
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