big update: added reactions, groups, media share

server/internal/platform/config/config.go

@@ -24,6 +24,8 @@ type Config struct {
 	DatabaseURL string
 	// JWTSecret signs access tokens. Must be set in production.
 	JWTSecret string
+	// MediaDir is the local disk location for uploaded attachments.
+	MediaDir string
 }
 
 // Load reads configuration from the environment, falling back to
@@ -35,6 +37,7 @@ func Load() (*Config, error) {
 		Environment: fromEnv("MESSENGER_ENV", "development"),
 		DatabaseURL: fromEnv("MESSENGER_DATABASE_URL", "postgres://messenger:messenger@localhost:5432/messenger?sslmode=disable"),
 		JWTSecret:   fromEnv("MESSENGER_JWT_SECRET", "dev-secret-change-me"),
+		MediaDir:    fromEnv("MESSENGER_MEDIA_DIR", "./media"),
 	}
 
 	for _, origin := range strings.Split(fromEnv("MESSENGER_ALLOWED_ORIGINS", ""), ",") {