diff --git a/.githooks/pre-commit b/.githooks/pre-commit
new file mode 100755
index 0000000..6763c5c
--- /dev/null
+++ b/.githooks/pre-commit
@@ -0,0 +1,15 @@
+#!/bin/bash
+# FlutterGuard CI gate — reject commits that introduce high-severity issues
+set -euo pipefail
+
+echo "🔍 Running FlutterGuard static scan..."
+dart run flutterguard_cli:flutterguard scan --path . --fail-on high
+
+if [ $? -ne 0 ]; then
+  echo ""
+  echo "❌ FlutterGuard 检测到高优问题，提交被阻止。"
+  echo "   运行 'dart run flutterguard_cli:flutterguard scan' 查看详情。"
+  exit 1
+fi
+
+echo "✅ FlutterGuard 扫描通过。"
diff --git a/.gitignore b/.gitignore
index 04dcbbf..d2d630d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -63,3 +63,6 @@
 **/linux/flutter/generated_plugin_registrant.cc
 **/linux/flutter/generated_plugin_registrant.h
 **/linux/flutter/generated_plugins.cmake
+
+# FlutterGuard scan output
+.flutterguard/
diff --git a/AGENTS.md b/AGENTS.md
index b1c7951..90f5f9f 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -33,9 +33,11 @@
 ```bash
 dart format .
 flutter analyze
+dart run flutterguard_cli:flutterguard scan --path . --fail-on high
 ```
 
 - `flutter analyze` 必须通过，不允许有 error 级别问题
+- `flutterguard scan --fail-on high` 必须通过，不允许引入高优问题
 - 涉及逻辑代码时补充测试（如有测试框架）
 - 涉及 UI 教学页时进行人工验收或截图说明
 
@@ -60,6 +62,14 @@ flutter analyze
 5. 标记低质量模块的 `status` 为 `ModuleStatus.pending`
 6. 检查 `flutter analyze` 和 `dart format` 是否通过
 
+## 启用预提交钩子
+
+```bash
+git config core.hooksPath .githooks
+```
+
+这会在每次 `git commit` 前自动执行 FlutterGuard 扫描，阻止引入高优问题的提交。
+
 ## 模块分类枚举
 
 ```dart
diff --git a/flutterguard.yaml b/flutterguard.yaml
new file mode 100644
index 0000000..4077529
--- /dev/null
+++ b/flutterguard.yaml
@@ -0,0 +1,42 @@
+include:
+  - lib/**
+  - test/**
+
+exclude:
+  - lib/**.g.dart
+  - lib/**.freezed.dart
+  - lib/**.mocks.dart
+
+rules:
+  large_file:
+    enabled: true
+    maxLines: 500
+  large_class:
+    enabled: true
+    maxLines: 300
+  large_build_method:
+    enabled: true
+    maxLines: 80
+  lifecycle_resource:
+    enabled: true
+
+boundaries:
+  # 模块禁止反向依赖 app 层
+  - name: no_module_to_app
+    from: lib/modules/**
+    forbidden:
+      - lib/app/**
+
+  # shared 层禁止反向依赖模块或 app
+  - name: shared_purity
+    from: lib/shared/**
+    forbidden:
+      - lib/modules/**
+      - lib/app/**
+
+  # shared 层必须纯净，不能反向依赖模块或 app
+  - name: shared_purity
+    from: lib/shared/**
+    forbidden:
+      - lib/modules/**
+      - lib/app/**
diff --git a/lib/modules/ui/download_animation/pages/paint_animation_page.dart b/lib/modules/ui/download_animation/pages/paint_animation_page.dart
index dcb6c12..0643139 100644
--- a/lib/modules/ui/download_animation/pages/paint_animation_page.dart
+++ b/lib/modules/ui/download_animation/pages/paint_animation_page.dart
@@ -110,7 +110,7 @@ class _PaintAnimationPageState extends State<PaintAnimationPage>
   @override
   void dispose() {
     for (var item in _flyingItems) {
-      item.controller.dispose();
+      item.dispose();
     }
     super.dispose();
   }
@@ -445,6 +445,10 @@ class FlyingPaintItem {
     required this.endPosition,
     required this.controller,
   });
+
+  void dispose() {
+    controller.dispose();
+  }
 }
 
 /// 自定义 Painter 绘制飞行动画
diff --git a/lib/modules/ui/gcode_visualizer/pages/gcode_visualizer_page.dart b/lib/modules/ui/gcode_visualizer/pages/gcode_visualizer_page.dart
index c8709f7..a69d355 100644
--- a/lib/modules/ui/gcode_visualizer/pages/gcode_visualizer_page.dart
+++ b/lib/modules/ui/gcode_visualizer/pages/gcode_visualizer_page.dart
@@ -17,31 +17,29 @@ class GcodeVisualizerPage extends StatefulWidget {
 class _GcodeVisualizerPageState extends State<GcodeVisualizerPage>
     with TickerProviderStateMixin {
   late final GcodePlayerController _controller;
-  late final TextEditingController _editorController;
+  final _editorKey = GlobalKey<GcodeEditorPanelState>();
 
   @override
   void initState() {
     super.initState();
     _controller = GcodePlayerController(vsync: this);
-    _editorController = TextEditingController(text: _controller.source);
     _controller.parse();
   }
 
   @override
   void dispose() {
-    _editorController.dispose();
     _controller.dispose();
     super.dispose();
   }
 
   void _onParse() {
-    _controller.updateSource(_editorController.text);
+    _controller.updateSource(_editorKey.currentState!.text);
     _controller.parse();
   }
 
   void _onResetSample() {
     _controller.loadSample();
-    _editorController.text = _controller.source;
+    _editorKey.currentState!.text = _controller.source;
     _controller.parse();
   }
 
@@ -124,7 +122,8 @@ class _GcodeVisualizerPageState extends State<GcodeVisualizerPage>
     return Column(
       children: [
         GcodeEditorPanel(
-          controller: _editorController,
+          key: _editorKey,
+          initialText: _controller.source,
           onParse: _onParse,
           onResetSample: _onResetSample,
           errorCount: _controller.errorCount,
diff --git a/lib/modules/ui/gcode_visualizer/widgets/gcode_editor_panel.dart b/lib/modules/ui/gcode_visualizer/widgets/gcode_editor_panel.dart
index f85b4db..15e5c12 100644
--- a/lib/modules/ui/gcode_visualizer/widgets/gcode_editor_panel.dart
+++ b/lib/modules/ui/gcode_visualizer/widgets/gcode_editor_panel.dart
@@ -3,7 +3,7 @@ import 'package:flutter/material.dart';
 class GcodeEditorPanel extends StatefulWidget {
   const GcodeEditorPanel({
     super.key,
-    required this.controller,
+    required this.initialText,
     required this.onParse,
     required this.onResetSample,
     required this.errorCount,
@@ -11,7 +11,7 @@ class GcodeEditorPanel extends StatefulWidget {
     required this.hasParsed,
   });
 
-  final TextEditingController controller;
+  final String initialText;
   final VoidCallback onParse;
   final VoidCallback onResetSample;
   final int errorCount;
@@ -19,15 +19,31 @@ class GcodeEditorPanel extends StatefulWidget {
   final bool hasParsed;
 
   @override
-  State<GcodeEditorPanel> createState() => _GcodeEditorPanelState();
+  State<GcodeEditorPanel> createState() => GcodeEditorPanelState();
 }
 
-class _GcodeEditorPanelState extends State<GcodeEditorPanel> {
+class GcodeEditorPanelState extends State<GcodeEditorPanel> {
+  late final TextEditingController _controller;
   bool _resetPressed = false;
   bool _parsePressed = false;
   bool _resetHovered = false;
   bool _parseHovered = false;
 
+  String get text => _controller.text;
+  set text(String value) => _controller.text = value;
+
+  @override
+  void initState() {
+    super.initState();
+    _controller = TextEditingController(text: widget.initialText);
+  }
+
+  @override
+  void dispose() {
+    _controller.dispose();
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     final theme = Theme.of(context);
@@ -104,7 +120,7 @@ class _GcodeEditorPanelState extends State<GcodeEditorPanel> {
           Padding(
             padding: const EdgeInsets.all(8),
             child: TextField(
-              controller: widget.controller,
+              controller: _controller,
               maxLines: 8,
               style: const TextStyle(
                 fontFamily: 'monospace',
diff --git a/pubspec.lock b/pubspec.lock
index f45e432..a281f98 100644
--- a/pubspec.lock
+++ b/pubspec.lock
@@ -1,6 +1,22 @@
 # Generated by pub
 # See https://dart.dev/tools/pub/glossary#lockfile
 packages:
+  _fe_analyzer_shared:
+    dependency: transitive
+    description:
+      name: _fe_analyzer_shared
+      sha256: da0d9209ca76bde579f2da330aeb9df62b6319c834fa7baae052021b0462401f
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "85.0.0"
+  analyzer:
+    dependency: transitive
+    description:
+      name: analyzer
+      sha256: "974859dc0ff5f37bc4313244b3218c791810d03ab3470a579580279ba971a48d"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "7.7.1"
   args:
     dependency: transitive
     description:
@@ -57,6 +73,22 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.19.1"
+  convert:
+    dependency: transitive
+    description:
+      name: convert
+      sha256: b30acd5944035672bc15c6b7a8b47d773e41e2f17de064350988c5d02adb1c68
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.1.2"
+  crypto:
+    dependency: transitive
+    description:
+      name: crypto
+      sha256: c8ea0233063ba03258fbcf2ca4d6dadfefe14f02fab57702265467a19f27fadf
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.0.7"
   device_info_plus:
     dependency: "direct main"
     description:
@@ -168,6 +200,28 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  flutterguard_cli:
+    dependency: "direct dev"
+    description:
+      path: "../flutterguard/packages/flutterguard_cli"
+      relative: true
+    source: path
+    version: "0.1.0"
+  flutterguard_core:
+    dependency: transitive
+    description:
+      path: "../flutterguard/packages/flutterguard_core"
+      relative: true
+    source: path
+    version: "0.1.0"
+  glob:
+    dependency: transitive
+    description:
+      name: glob
+      sha256: c3f1ee72c96f8f78935e18aa8cecced9ab132419e8625dc187e1c2408efc20de
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.1.3"
   go_router:
     dependency: "direct main"
     description:
@@ -272,6 +326,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "1.0.0"
+  package_config:
+    dependency: transitive
+    description:
+      name: package_config
+      sha256: f096c55ebb7deb7e384101542bfba8c52696c1b56fca2eb62827989ef2353bbc
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.2.0"
   path:
     dependency: transitive
     description:
@@ -312,6 +374,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "6.1.5+1"
+  pub_semver:
+    dependency: transitive
+    description:
+      name: pub_semver
+      sha256: "5bfcf68ca79ef689f8990d1160781b4bad40a3bd5e5218ad4076ddb7f4081585"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "2.2.0"
   riverpod:
     dependency: transitive
     description:
@@ -445,6 +515,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "15.2.0"
+  watcher:
+    dependency: transitive
+    description:
+      name: watcher
+      sha256: "1398c9f081a753f9226febe8900fce8f7d0a67163334e1c94a2438339d79d635"
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "1.2.1"
   web:
     dependency: transitive
     description:
@@ -477,6 +555,14 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "6.6.1"
+  yaml:
+    dependency: transitive
+    description:
+      name: yaml
+      sha256: b9da305ac7c39faa3f030eccd175340f968459dae4af175130b3fc47e40d76ce
+      url: "https://pub.flutter-io.cn"
+    source: hosted
+    version: "3.1.3"
 sdks:
   dart: ">=3.9.0 <4.0.0"
   flutter: ">=3.35.0"
diff --git a/pubspec.yaml b/pubspec.yaml
index 25febdb..82ae4e3 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -25,6 +25,8 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
   flutter_lints: ^4.0.0
+  flutterguard_cli:
+    path: ../flutterguard/packages/flutterguard_cli
 
 flutter:
   uses-material-design: true