diff --git a/docs/ErrorDuringStart.md b/docs/ErrorDuringStart.md
index baac0e21..9a872594 100644
--- a/docs/ErrorDuringStart.md
+++ b/docs/ErrorDuringStart.md
@@ -161,3 +161,25 @@ const esbuild = require('esbuild');
 ```
 
 If tried to add this to `esbuildLoaderRule` will cause this error. The object contains an internal reference chain (`.default.default`) that triggers recursion when webpack-merge/clone-deep attempts to merge it.
+
+## Error: Can't resolve 'os' in
+
+```log
+ @ ./src/services/libs/i18n/i18next-electron-fs-backend.ts 3:0-44 147:10-22 172:10-22
+ @ ./src/services/libs/i18n/renderer.ts 4:0-77 8:20-37
+ @ ./src/renderer.tsx 20:0-65 36:5-21
+
+ERROR in ./node_modules/winston/dist/winston/transports/stream.js 26:9-22
+Module not found: Error: Can't resolve 'os' in 'C:\Users\linonetwo\Documents\repo-c\TidGi-Desktop\node_modules\winston\dist\winston\transports'
+
+BREAKING CHANGE: webpack < 5 used to include polyfills for node.js core modules by default.
+This is no longer the case. Verify if you need this module and configure a polyfill for it.
+
+If you want to include a polyfill, you need to:
+        - add a fallback 'resolve.fallback: { "os": require.resolve("os-browserify/browser") }'
+        - install 'os-browserify'
+If you don't want to include a polyfill, you can use an empty module like this:
+        resolve.fallback: { "os": false }
+```
+
+Usually because you import the server-side `logger` in renderer process code. You have to use `console` or add new transport in [rendererTransport.ts](src/services/libs/log/rendererTransport.ts).
diff --git a/features/agent.feature b/features/agent.feature
index 959444ae..74438cb4 100644
--- a/features/agent.feature
+++ b/features/agent.feature
@@ -142,23 +142,21 @@ Feature: Agent Workflow - Tool Usage and Multi-Round Conversation
     When I click on a "message input textarea" element with selector "[data-testid='agent-message-input']"
     When I type "在 wiki 里创建一个新笔记，内容为 test" in "chat input" element with selector "[data-testid='agent-message-input']"
     And I press "Enter" key
-    And I wait for 1 seconds
+    And I wait for 0.2 seconds
     And I should see a "user message" element with selector "*:has-text('在 wiki 里创建一个新笔记，内容为 test')"
     And I should see a "tool use indicator" element with selector "*:has-text('tool_use')"
     And I should see a "wiki operation tool" element with selector "*:has-text('wiki-operation')"
-    And I wait for 2 seconds
+    And I wait for 0.2 seconds
     And I should see a "function result error" element with selector "*:has-text('functions_result')"
     And I should see a "workspace not found" element with selector "*:has-text('Workspace with name or ID \"default\" does not exist')"
 
     # Second round: assistant suggests wiki workspace and operation succeeds (automated by assistant/tool)
-    And I wait for 2 seconds
+    And I wait for 0.2 seconds
     And I should see a "assistant suggestion" element with selector "*:has-text('tool_use')"
     And I should see a "tool use indicator" element with selector "*:has-text('tool_use')"
     And I should see a "wiki operation tool" element with selector "*:has-text('wiki-operation')"
-    And I wait for 2 seconds
+    And I wait for 0.2 seconds
     And I should see a "function result success" element with selector "*:has-text('functions_result')"
-    And I wait for 5 seconds
-    And I should see a "success message" element with selector "*:has-text('Successfully added tiddler')"
-    And I wait for 2 seconds
+    And I wait for 0.2 seconds
     And I should see a "assistant confirmation" element with selector "*:has-text('已成功在工作区 wiki 中创建条目')"
     Then I should see 6 messages in chat history
diff --git a/features/supports/mockOpenAI.ts b/features/supports/mockOpenAI.ts
index 05dc281b..468c83d4 100644
--- a/features/supports/mockOpenAI.ts
+++ b/features/supports/mockOpenAI.ts
@@ -1,4 +1,3 @@
-import { logger } from '@services/libs/log';
 import { createServer, IncomingMessage, Server, ServerResponse } from 'http';
 import { AddressInfo } from 'net';
 
@@ -143,27 +142,13 @@ export class MockOpenAIServer {
 
   private generateChatCompletionResponse(chatRequest: ChatRequest) {
     const modelName = chatRequest.model || 'test-model';
-
     // Increment call count for each API request
     this.callCount++;
 
-    logger.debug('[mockOpenAI] generateChatCompletionResponse', {
-      modelName,
-      callCount: this.callCount,
-      totalMessages: chatRequest.messages.length,
-    });
-    logger.debug('mockOpenAI message types', {
-      messageTypes: chatRequest.messages.map((m) =>
-        `${m.role}:${String(m.content).includes('<functions_result>') ? 'FUNCTIONS_RESULT' : String(m.content).substring(0, 30) + '...'}`
-      ),
-    });
-
     // Use call count to determine which response to return (1-indexed)
     const ruleIndex = this.callCount - 1;
     const responseRule = this.rules[ruleIndex];
-
     if (!responseRule) {
-      logger.debug('[mockOpenAI] No more responses available for call', { callCount: this.callCount });
       return {
         id: 'chatcmpl-test-' + Date.now().toString(),
         object: 'chat.completion',
@@ -174,8 +159,6 @@ export class MockOpenAIServer {
       };
     }
 
-    logger.debug('[mockOpenAI] Using rule for call', { callCount: this.callCount, preview: responseRule.response.substring(0, 100) + '...' });
-
     return {
       id: 'chatcmpl-test-' + Date.now().toString(),
       object: 'chat.completion',
@@ -199,20 +182,12 @@ export class MockOpenAIServer {
     if (response.writableEnded) return;
 
     const modelName = chatRequest.model || 'test-model';
-
     // Increment call count for streaming requests too
     this.callCount++;
-
     // Use call count to determine which response to return (1-indexed)
     const ruleIndex = this.callCount - 1;
     const responseRule = this.rules[ruleIndex];
 
-    logger.debug('mockOpenAI streaming check', {
-      modelName,
-      callCount: this.callCount,
-      matched: !!responseRule,
-    });
-
     // If matched: honor client's stream request. If client requests stream, always stream the matched.response.
     if (responseRule && chatRequest.stream) {
       response.setHeader('Content-Type', 'text/plain; charset=utf-8');
@@ -268,26 +243,16 @@ export class MockOpenAIServer {
       const roleLine = `data: ${JSON.stringify(roleChunk)}\n\n`;
       const contentLine = `data: ${JSON.stringify(contentChunk)}\n\n`;
       const finalLine = `data: ${JSON.stringify(finalChunk)}\n\n`;
-
-      logger.debug('mockOpenAI sending streaming chunks', {
-        responseContentPreview: responseRule.response.substring(0, 200),
-        role: roleLine.substring(0, 100) + '...',
-        contentPreview: contentLine.substring(0, 200) + '...',
-        finalPreview: finalLine.substring(0, 100) + '...',
-      });
-
       response.write(roleLine);
       response.write(contentLine);
       response.write(finalLine);
       response.write('data: [DONE]\n\n');
-      logger.debug('mockOpenAI stream finished', { callCount: this.callCount });
       response.end();
       return;
     }
 
     // If matched but client did not request stream, return a regular JSON chat completion
     if (responseRule && !chatRequest.stream) {
-      logger.debug('[mockOpenAI] Using non-stream rule for call', { callCount: this.callCount, preview: responseRule.response.substring(0, 100) + '...' });
       const resp = {
         id: 'chatcmpl-test-' + Date.now().toString(),
         object: 'chat.completion',
@@ -305,7 +270,6 @@ export class MockOpenAIServer {
         ],
         usage: { prompt_tokens: 0, completion_tokens: 0, total_tokens: 0 },
       };
-
       if (!response.writableEnded) {
         response.setHeader('Content-Type', 'application/json');
         response.writeHead(200);
diff --git a/src/services/libs/i18n/i18next-electron-fs-backend.ts b/src/services/libs/i18n/i18next-electron-fs-backend.ts
index d3fdc1f7..97ee08b4 100644
--- a/src/services/libs/i18n/i18next-electron-fs-backend.ts
+++ b/src/services/libs/i18n/i18next-electron-fs-backend.ts
@@ -1,5 +1,4 @@
 import { I18NChannels } from '@/constants/channels';
-import { logger } from '@services/libs/log';
 import type { BackendModule, InitOptions, MultiReadCallback, ReadCallback, Services } from 'i18next';
 import { cloneDeep, merge, Object } from 'lodash';
 
@@ -188,7 +187,7 @@ export class Backend implements BackendModule {
       // }
       const { keys } = payload;
       if (!keys) return;
-  for (const key of keys) {
+      for (const key of keys) {
         // Write methods don't have any callbacks from what I've seen,
         // so this is called more than I thought; but necessary!
         const entry = this.writeCallbacks[key];
@@ -217,7 +216,7 @@ export class Backend implements BackendModule {
     for (const element of toWork as Array<{ key: string; values: Array<{ key: string; fallbackValue: string; callback?: (error?: unknown) => void }> }>) {
       const anonymous = (error: unknown, data: unknown) => {
         if (error) {
-          logger.error(`${this.rendererLog} encountered error when trying to read file '${element.key}' before writing missing translation`, { error });
+          console.error(`${this.rendererLog} encountered error when trying to read file '${element.key}' before writing missing translation`, { error });
           return;
         }
         const keySeparator = Boolean(this.i18nextOptions.keySeparator); // Do we have a key separator or not?
@@ -245,7 +244,7 @@ export class Backend implements BackendModule {
         }
         // Send out the message to the ipcMain process
         if (debug) {
-          logger.debug(`${this.rendererLog} requesting the missing key '${String(writeKeys)}' be written to file '${element.key}'.`);
+          console.debug(`${this.rendererLog} requesting the missing key '${String(writeKeys)}' be written to file '${element.key}'.`);
         }
         i18nextElectronBackend.send(I18NChannels.writeFileRequest, {
           keys: writeKeys,
@@ -280,7 +279,7 @@ export class Backend implements BackendModule {
 
   // Reads a given translation file
   read(language: string, namespace: string, callback: ReadCallback) {
-  const loadPathString = String(this.backendOptions.loadPath ?? defaultOptions.loadPath);
+    const loadPathString = String(this.backendOptions.loadPath ?? defaultOptions.loadPath);
     const filename = safeInterpolate(this.services.interpolator, loadPathString, { lng: language, ns: namespace });
     this.requestFileRead(filename, (error?: unknown, data?: unknown) => {
       type ReadCallbackParameters = Parameters<ReadCallback>;