fix(backend): reject unknown fields in source config (#88)

Add "+": "reject" to all arktype schemas so undeclared
keys return 400. Sources without a configSchema now
reject the config field entirely at the HTTP layer.

Co-authored-by: Ona <no-reply@ona.com>

apps/aelis-backend/src/weather/provider.ts

@@ -9,6 +9,7 @@ export interface WeatherSourceProviderOptions {
 }
 
 export const weatherConfig = type({
+	"+": "reject",
 	"units?": "'metric' | 'imperial'",
 	"hourlyLimit?": "number",
 	"dailyLimit?": "number",