refactor: remove db package and move database logic to service layer

cmd/root.go

@@ -15,7 +15,7 @@ var rootCmd = &cobra.Command{Use: "ax", Short: "The axolotl issue tracker"}
 
 func Execute() {
 	var err error
-	cfg, err = service.LoadConfig()
+	cfg, err = service.LoadConfigFile()
 	if err != nil {
 		fmt.Fprintln(os.Stderr, "failed to load config:", err)
 		os.Exit(1)
@@ -27,18 +27,48 @@ func Execute() {
 	}
 }
 
+func expandAlias(alias *service.Alias, args []string, currentUser string) []string {
+	cmd := alias.Command
+	cmd = strings.ReplaceAll(cmd, "$me", currentUser)
+
+	parts := strings.Fields(cmd)
+	var result []string
+
+	for _, part := range parts {
+		if part == "$@" {
+			result = append(result, args...)
+			continue
+		}
+
+		hasCatchAll := strings.Contains(part, "$@")
+		replaced := part
+
+		if hasCatchAll {
+			replaced = strings.ReplaceAll(replaced, "$@", strings.Join(args, " "))
+		}
+
+		for i := len(args) - 1; i >= 0; i-- {
+			placeholder := fmt.Sprintf("$%d", i+1)
+			replaced = strings.ReplaceAll(replaced, placeholder, args[i])
+		}
+
+		result = append(result, replaced)
+	}
+
+	return result
+}
+
 func registerAliasCommands() {
 	rootCmd.AddGroup(&cobra.Group{ID: "aliases", Title: "Aliases:"})
 	aliases, _ := cfg.ListAliases()
 	for _, a := range aliases {
-		a := a
 		rootCmd.AddCommand(&cobra.Command{
 			Use:                a.Name,
 			Short:              a.Description,
 			GroupID:            "aliases",
 			DisableFlagParsing: true,
 			Run: func(cmd *cobra.Command, args []string) {
-				expanded := service.ExpandAlias(a, args, cfg.GetUser())
+				expanded := expandAlias(a, args, cfg.GetUser())
 				rootCmd.SetArgs(transformArgs(expanded))
 				if err := rootCmd.Execute(); err != nil {
 					os.Exit(1)