Replace Bash qvm scripts with Go CLI implementation

internal/config/config.go

@@ -0,0 +1,47 @@
+package config
+
+import (
+	"fmt"
+	"os"
+	"strconv"
+
+	"github.com/BurntSushi/toml"
+)
+
+type Config struct {
+	VM VMConfig `toml:"vm"`
+}
+
+type VMConfig struct {
+	Memory string `toml:"memory"`
+	CPUs   int    `toml:"cpus"`
+}
+
+func Load() (*Config, error) {
+	cfg := &Config{
+		VM: VMConfig{
+			Memory: "30G",
+			CPUs:   30,
+		},
+	}
+
+	if _, err := os.Stat(ConfigFile); err == nil {
+		if _, err := toml.DecodeFile(ConfigFile, cfg); err != nil {
+			return nil, fmt.Errorf("failed to parse config file %s: %w", ConfigFile, err)
+		}
+	}
+
+	if memEnv := os.Getenv("QVM_MEMORY"); memEnv != "" {
+		cfg.VM.Memory = memEnv
+	}
+
+	if cpusEnv := os.Getenv("QVM_CPUS"); cpusEnv != "" {
+		cpus, err := strconv.Atoi(cpusEnv)
+		if err != nil {
+			return nil, fmt.Errorf("QVM_CPUS must be a valid integer: %w", err)
+		}
+		cfg.VM.CPUs = cpus
+	}
+
+	return cfg, nil
+}