add local filesystem storage for packages and assets with upload handlers

portal/internal/config/config.go

@@ -26,7 +26,7 @@ type Config struct {
 	GoogleClientSecret string
 
 	// Storage
-	PackagesDir string
+	StoragePath string // Base path for all storage (packages/, assets/, temp/)
 	BackupsDir  string
 }
 
@@ -45,7 +45,7 @@ func Load() (*Config, error) {
 		GoogleClientID:     os.Getenv("GOOGLE_CLIENT_ID"),
 		GoogleClientSecret: os.Getenv("GOOGLE_CLIENT_SECRET"),
 
-		PackagesDir: getEnv("PACKAGES_DIR", "./packages"),
+		StoragePath: getEnv("STORAGE_PATH", "./storage"),
 		BackupsDir:  getEnv("BACKUPS_DIR", "./backups"),
 	}