4507359760
Implement centralized configuration validation (ADR-020) to simplify deployment mode detection and improve error messages. Changes: - Create ADR-020 documenting 5 deployment modes with required/optional config - Add config_validators.py with validate_configuration() and mode detection - Simplify app.py startup with single validation point at get_app() - Remove duplicate is_oauth_mode() function (43 lines) - Fix DeploymentMode mapping (only SELF_HOSTED and SMITHERY_STATELESS exist) - Add comprehensive unit tests (41 tests covering all modes and edge cases) - Add enable_multi_user_basic_auth to Settings and BasicAuthMiddleware Docker Compose: - Remove conflicting ENABLE_MULTI_USER_BASIC_AUTH from mcp-oauth service - Add dedicated mcp-multi-user-basic service on port 8003 Test Results: - 237/237 integration tests PASSED - All deployment modes verified: single-user BasicAuth, multi-user BasicAuth, OAuth single-audience, OAuth token exchange (Keycloak), Smithery stateless 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>