feat: basic firmware registry

internal/config/config.go

@@ -0,0 +1,47 @@
+package config
+
+import (
+	"os"
+	"strconv"
+)
+
+// Config holds the application configuration
+type Config struct {
+	Port     string
+	DBPath   string
+	Registry string
+	MaxSize  int64
+}
+
+// LoadConfig loads configuration from environment variables with defaults
+func LoadConfig() *Config {
+	port := os.Getenv("PORT")
+	if port == "" {
+		port = "3002"
+	}
+
+	dbPath := os.Getenv("DB_PATH")
+	if dbPath == "" {
+		dbPath = "./registry.db"
+	}
+
+	registry := os.Getenv("REGISTRY_PATH")
+	if registry == "" {
+		registry = "registry"
+	}
+
+	maxSizeStr := os.Getenv("MAX_UPLOAD_SIZE")
+	maxSize := int64(32 << 20) // 32MB default
+	if maxSizeStr != "" {
+		if parsed, err := strconv.ParseInt(maxSizeStr, 10, 64); err == nil {
+			maxSize = parsed
+		}
+	}
+
+	return &Config{
+		Port:     port,
+		DBPath:   dbPath,
+		Registry: registry,
+		MaxSize:  maxSize,
+	}
+}