diff --git a/.gitignore b/.gitignore
index a7ce302..b3238d5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -106,4 +106,5 @@ data/
 docs/
 data_old/
 backend/migrate_all_databases.py
-test_api.py
\ No newline at end of file
+test_api.py
+backend/embedding/models--sentence-transformers--all-MiniLM-L6-v2
\ No newline at end of file
diff --git a/backend/.env.example b/backend/.env.example
index 4ea0761..75e0e72 100644
--- a/backend/.env.example
+++ b/backend/.env.example
@@ -81,7 +81,7 @@ OPENAI_BASE_URL=https://api.openai.com/v1
 DEFAULT_AI_PROVIDER=openai
 DEFAULT_MODEL=gpt-4o-mini
 DEFAULT_TEMPERATURE=0.7
-DEFAULT_MAX_TOKENS=2000
+DEFAULT_MAX_TOKENS=32000
 
 # ==========================================
 # LinuxDO OAuth 配置（可选）
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index fd4659e..1d1d5f4 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -1081,7 +1081,7 @@
         "globals": "^14.0.0",
         "ignore": "^5.2.0",
         "import-fresh": "^3.2.1",
-        "js-yaml": "^4.1.0",
+        "js-yaml": "^4.1.1",
         "minimatch": "^3.1.2",
         "strip-json-comments": "^3.1.1"
       },
@@ -3409,9 +3409,9 @@
       "license": "MIT"
     },
     "node_modules/js-yaml": {
-      "version": "4.1.0",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.0.tgz",
-      "integrity": "sha512-wpxZs9NoxZaJESJGIZTyDEaYpl0FKSA+FB9aJiyemKhMwkxQg63h4T1KJgUGHpTqPDNRcmmYLugrRjJlBtWvRA==",
+      "version": "4.1.1",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-4.1.1.tgz",
+      "integrity": "sha512-qQKT4zQxXl8lLwBtHMWwaTcGfFOZviOJet3Oy/xmGk2gZH677CJM9EvtfdSkgWcATZhj/55JZ0rmy3myCT5lsA==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
diff --git a/frontend/src/pages/Outline.tsx b/frontend/src/pages/Outline.tsx
index 141da07..73f2223 100644
--- a/frontend/src/pages/Outline.tsx
+++ b/frontend/src/pages/Outline.tsx
@@ -6,7 +6,7 @@ import { useOutlineSync } from '../store/hooks';
 import { cardStyles } from '../components/CardStyles';
 import { SSEPostClient } from '../utils/sseClient';
 import { outlineApi, chapterApi } from '../services/api';
-import type { OutlineExpansionRequest, OutlineExpansionResponse, BatchOutlineExpansionResponse } from '../types';
+import type { OutlineExpansionResponse, BatchOutlineExpansionResponse } from '../types';
 
 const { TextArea } = Input;