feat: init pc-monitor project

- Client: Go-based Windows hardware monitoring (CPU, GPU, memory, disk, network, power)
- Server: Go + Gin + SQLite backend with REST API
- Frontend: Vue 3 + Element Plus dashboard
- Docker deployment support
- Windows service installation script

server/config/config.go

@@ -0,0 +1,51 @@
+package config
+
+import (
+	"os"
+	"time"
+
+	"gopkg.in/yaml.v3"
+)
+
+type Config struct {
+	Server   ServerConfig   `yaml:"server"`
+	Database DatabaseConfig `yaml:"database"`
+	Auth     AuthConfig     `yaml:"auth"`
+}
+
+type ServerConfig struct {
+	Addr string `yaml:"addr"`
+}
+
+type DatabaseConfig struct {
+	Path           string `yaml:"path"`
+	RetentionDays  int    `yaml:"retention_days"`
+	CleanupInterval time.Duration `yaml:"cleanup_interval"`
+}
+
+type AuthConfig struct {
+	AdminPassword string `yaml:"admin_password"`
+}
+
+func Load() *Config {
+	cfg := &Config{
+		Server: ServerConfig{
+			Addr: ":8080",
+		},
+		Database: DatabaseConfig{
+			Path:           "./data/monitor.db",
+			RetentionDays:  30,
+			CleanupInterval: 24 * time.Hour,
+		},
+		Auth: AuthConfig{
+			AdminPassword: "admin123",
+		},
+	}
+
+	data, err := os.ReadFile("config.yaml")
+	if err == nil {
+		yaml.Unmarshal(data, cfg)
+	}
+
+	return cfg
+}