MAESTRO: add backend settings config

backend/tests/test_config.py

@@ -0,0 +1,29 @@
+from app.core.config import Settings
+
+
+def test_settings_defaults() -> None:
+    settings = Settings()
+    assert settings.analysis_timeout_seconds == 30
+    assert settings.debug is False
+    assert settings.rate_limit_requests == 60
+    assert settings.rate_limit_window_seconds == 60
+    assert settings.cors_origins == ["http://localhost:3000"]
+
+
+def test_settings_env_override(monkeypatch) -> None:
+    monkeypatch.setenv(
+        "WHA_CORS_ORIGINS",
+        '["https://example.com", "http://localhost:3000"]',
+    )
+    monkeypatch.setenv("WHA_RATE_LIMIT_REQUESTS", "10")
+    monkeypatch.setenv("WHA_RATE_LIMIT_WINDOW_SECONDS", "120")
+    monkeypatch.setenv("WHA_ANALYSIS_TIMEOUT_SECONDS", "45")
+    monkeypatch.setenv("WHA_DEBUG", "true")
+
+    settings = Settings()
+
+    assert settings.cors_origins == ["https://example.com", "http://localhost:3000"]
+    assert settings.rate_limit_requests == 10
+    assert settings.rate_limit_window_seconds == 120
+    assert settings.analysis_timeout_seconds == 45
+    assert settings.debug is True