fix: Resolve golangci-lint errors

- Fix unchecked return value for stdin.Write in go.go
- Fix unchecked return value for server.Stop in oauth_wizard.go
- Remove unused ide_config.go file
- Remove unused getOAuthConfigForProvider function
- Remove unused promptYesNo function
- Remove unused provider import from oauth_wizard.go

All linter errors have been resolved and build passes successfully.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: cecil-the-coder

internal/config/interactive/ide_config.go

@@ -6,7 +6,6 @@ import (
 	"time"
 
 	"github.com/cecil-the-coder/mcp-code-api/internal/api/auth"
-	"github.com/cecil-the-coder/mcp-code-api/internal/api/provider"
 	"github.com/cecil-the-coder/mcp-code-api/internal/logger"
 	"github.com/cecil-the-coder/mcp-code-api/internal/oauth"
 )
@@ -41,7 +40,7 @@ func (w *Wizard) performOAuthFlow(providerName string, config ProviderOAuthConfi
 	if err != nil {
 		return nil, fmt.Errorf("failed to start callback server: %w", err)
 	}
-	defer server.Stop()
+	defer func() { _ = server.Stop() }()
 
 	if err := server.Start(); err != nil {
 		return nil, fmt.Errorf("failed to start callback server: %w", err)
@@ -191,27 +190,3 @@ func (w *Wizard) configureProviderOAuth(providerName, displayName string) (*Prov
 
 	return config, tokenInfo, nil
 }
-
-// getOAuthConfigForProvider returns OAuth config for a provider in the config format
-func getOAuthConfigForProvider(oauthConfig *ProviderOAuthConfig, tokenInfo *auth.TokenInfo) *provider.OAuthConfig {
-	if oauthConfig == nil {
-		return nil
-	}
-
-	providerConfig := &provider.OAuthConfig{
-		ClientID:     oauthConfig.ClientID,
-		ClientSecret: oauthConfig.ClientSecret,
-		RedirectURL:  "", // Will be set during flow
-		Scopes:       oauthConfig.Scopes,
-		AuthURL:      oauthConfig.AuthURL,
-		TokenURL:     oauthConfig.TokenURL,
-	}
-
-	if tokenInfo != nil {
-		providerConfig.AccessToken = tokenInfo.AccessToken
-		providerConfig.RefreshToken = tokenInfo.RefreshToken
-		providerConfig.ExpiresAt = tokenInfo.ExpiresAt
-	}
-
-	return providerConfig
-}

internal/config/interactive/oauth_wizard.go

@@ -626,28 +626,6 @@ func (w *Wizard) prompt(prompt string, allowEmpty bool) string {
 	}
 }
 
-// promptYesNo prompts the user for a yes/no answer
-func (w *Wizard) promptYesNo(prompt string, defaultValue bool) bool {
-	for {
-		fmt.Print(prompt)
-		input, err := w.reader.ReadString('\n')
-		if err != nil {
-			// Handle EOF or other input errors gracefully - just return default
-			return defaultValue
-		}
-
-		input = strings.ToLower(strings.TrimSpace(input))
-		switch input {
-		case "y", "yes":
-			return true
-		case "n", "no", "":
-			return defaultValue
-		default:
-			fmt.Println("Please enter 'y' or 'n'.")
-		}
-	}
-}
-
 // saveConfiguration prompts for config file location and saves the configuration
 func (w *Wizard) saveConfiguration() (string, error) {
 	fmt.Println("\n💾 Save Configuration")

internal/config/interactive/wizard.go

@@ -79,7 +79,7 @@ func (v *GoValidator) AutoFix(code string) (string, error) {
 
 	go func() {
 		defer stdin.Close()
-		stdin.Write([]byte(code))
+		_, _ = stdin.Write([]byte(code))
 	}()
 
 	output, err := cmd.CombinedOutput()