refactor: Replace console.error with structured logging and feedback (#12175)

packages/cli/src/config/settings.ts

@@ -617,10 +617,10 @@ export function loadSettings(
                   'utf-8',
                 );
               } catch (e) {
-                console.error(
-                  `Error migrating settings file on disk: ${getErrorMessage(
-                    e,
-                  )}`,
+                coreEvents.emitFeedback(
+                  'error',
+                  'Failed to migrate settings file.',
+                  e,
                 );
               }
             } else {

packages/cli/src/ui/utils/clipboardUtils.ts

@@ -6,7 +6,7 @@
 
 import * as fs from 'node:fs/promises';
 import * as path from 'node:path';
-import { spawnAsync } from '@google/gemini-cli-core';
+import { debugLogger, spawnAsync } from '@google/gemini-cli-core';
 
 /**
  * Checks if the system clipboard contains an image (macOS only for now)
@@ -105,7 +105,7 @@ export async function saveClipboardImage(
     // No format worked
     return null;
   } catch (error) {
-    console.error('Error saving clipboard image:', error);
+    debugLogger.warn('Error saving clipboard image:', error);
     return null;
   }
 }

packages/core/src/tools/shell.ts

@@ -9,7 +9,7 @@ import path from 'node:path';
 import os, { EOL } from 'node:os';
 import crypto from 'node:crypto';
 import type { Config } from '../config/config.js';
-import type { AnyToolInvocation } from '../index.js';
+import { debugLogger, type AnyToolInvocation } from '../index.js';
 import { ToolErrorType } from './tool-error.js';
 import type {
   ToolInvocation,
@@ -226,7 +226,7 @@ export class ShellToolInvocation extends BaseToolInvocation<
             .filter(Boolean);
           for (const line of pgrepLines) {
             if (!/^\d+$/.test(line)) {
-              console.error(`pgrep: ${line}`);
+              debugLogger.error(`pgrep: ${line}`);
             }
             const pid = Number(line);
             if (pid !== result.pid) {
@@ -235,7 +235,7 @@ export class ShellToolInvocation extends BaseToolInvocation<
           }
         } else {
           if (!signal.aborted) {
-            console.error('missing pgrep output');
+            debugLogger.error('missing pgrep output');
           }
         }
       }
@@ -424,7 +424,7 @@ export class ShellTool extends BaseDeclarativeTool<
     const commandCheck = isCommandAllowed(params.command, this.config);
     if (!commandCheck.allowed) {
       if (!commandCheck.reason) {
-        console.error(
+        debugLogger.error(
           'Unexpected: isCommandAllowed returned false without a reason',
         );
         return `Command is not allowed: ${params.command}`;