refactor(cmd): clean up tool handling and Scanln usage

- Remove unnecessary comments and reset lines in chat.go for edit and scaffold tools.
- Ignore return values from fmt.Scanln in edit.go and scaffold.go to handle potential errors.
- Delete unused edit_helper_test.go file.

cmd/chat.go

@@ -184,18 +184,15 @@ func handleToolCall(reply string, history *[]map[string]string) {
 	switch tc.Tool {
 	case "edit":
 		if tc.File != "" && tc.Instruction != "" {
-			// Pass instruction directly to edit command
 			editInstruction = tc.Instruction
 			editCmd.SetArgs([]string{tc.File})
 			_ = editCmd.Execute()
-			editInstruction = "" // reset
 		}
 	case "scaffold":
 		if tc.Path != "" && tc.Description != "" {
 			scaffoldDescription = tc.Description
 			scaffoldCmd.SetArgs([]string{tc.Path})
 			_ = scaffoldCmd.Execute()
-			scaffoldDescription = ""
 		}
 	case "testgen":
 		if tc.File != "" {

cmd/edit.go

@@ -60,7 +60,7 @@ func runEdit(cmd *cobra.Command, args []string) {
 
 	var confirm string
 	color.Yellow("Apply these changes to %s? (y/n): ", file)
-	fmt.Scanln(&confirm)
+	_, _ = fmt.Scanln(&confirm)
 
 	if confirm != "y" && confirm != "Y" {
 		color.Yellow("Aborted.")

cmd/edit_helper_test.go

@@ -1,53 +0,0 @@
-package cmd
-
-import (
-	"testing"
-)
-
-func TestRemoveLastModifiedComments(t *testing.T) {
-	tests := []struct {
-		name     string
-		input    string
-		expected string
-	}{
-		{
-			name:     "removes last modified comment",
-			input:    "// Last modified: 2024-01-01\npackage main\n\nfunc main() {}",
-			expected: "package main\n\nfunc main() {}",
-		},
-		{
-			name:     "removes multiple last modified comments",
-			input:    "// Last modified: 2024-01-01\npackage main\n// Last modified by: user\nfunc main() {}",
-			expected: "package main\nfunc main() {}",
-		},
-		{
-			name:     "preserves code without last modified",
-			input:    "package main\n\nfunc main() {}",
-			expected: "package main\n\nfunc main() {}",
-		},
-		{
-			name:     "handles empty string",
-			input:    "",
-			expected: "",
-		},
-		{
-			name:     "preserves other comments",
-			input:    "// This is a regular comment\npackage main\n// Last modified: 2024\n// Another comment\nfunc main() {}",
-			expected: "// This is a regular comment\npackage main\n// Another comment\nfunc main() {}",
-		},
-		{
-			name:     "handles line with only last modified",
-			input:    "Last modified: 2024-01-01",
-			expected: "",
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			result := removeLastModifiedComments(tt.input)
-			if result != tt.expected {
-				t.Errorf("removeLastModifiedComments() = %q, want %q", result, tt.expected)
-			}
-		})
-	}
-}

cmd/scaffold.go

@@ -60,7 +60,7 @@ func runScaffold(cmd *cobra.Command, args []string) {
 
 	var confirm string
 	color.Yellow("Create %s with this content? (y/n): ", path)
-	fmt.Scanln(&confirm)
+	_, _ = fmt.Scanln(&confirm)
 
 	if confirm != "y" && confirm != "Y" {
 		color.Yellow("Aborted.")