refactor(api): introduce v1 response contract

backend/internal/config/config.go

@@ -9,13 +9,14 @@ import (
 )
 
 type Config struct {
-	Env                   string `yaml:"env"`
-	Port                  string `yaml:"port"`
-	DSN                   string `yaml:"dsn"`
-	StorageDir            string `yaml:"storage_dir"`
-	AuthSecret            string `yaml:"auth_secret"`
-	SystemAIKey           string `yaml:"system_ai_key"`
-	AIKeyEncryptionSecret string `yaml:"ai_key_encryption_secret"`
+	Env                   string   `yaml:"env"`
+	Port                  string   `yaml:"port"`
+	DSN                   string   `yaml:"dsn"`
+	StorageDir            string   `yaml:"storage_dir"`
+	AuthSecret            string   `yaml:"auth_secret"`
+	SystemAIKey           string   `yaml:"system_ai_key"`
+	AIKeyEncryptionSecret string   `yaml:"ai_key_encryption_secret"`
+	AllowedOrigins        []string `yaml:"allowed_origins"`
 }
 
 func Load() Config {