📦 添加虚拟环境和启动脚本

新增:
- backend/venv/ - Python 虚拟环境
- backend/start.sh - 启动脚本（使用虚拟环境）
- backend/requirements.txt - 依赖列表
- .gitignore - 忽略虚拟环境和缓存文件

说明:
- 每个项目使用独立虚拟环境
- 避免依赖冲突
- 启动脚本自动创建和激活虚拟环境

frontend/node_modules/launch-editor/editor-info/linux.js

@@ -0,0 +1,30 @@
+module.exports = {
+  atom: 'atom',
+  Brackets: 'brackets',
+  'code-insiders': 'code-insiders',
+  code: 'code',
+  vscodium: 'vscodium',
+  codium: 'codium',
+  cursor: 'cursor',
+  trae: 'trae',
+  antigravity: 'antigravity',
+  emacs: 'emacs',
+  gvim: 'gvim',
+  idea: 'idea',
+  'idea.sh': 'idea',
+  phpstorm: 'phpstorm',
+  'phpstorm.sh': 'phpstorm',
+  pycharm: 'pycharm',
+  'pycharm.sh': 'pycharm',
+  rubymine: 'rubymine',
+  'rubymine.sh': 'rubymine',
+  sublime_text: 'subl',
+  vim: 'vim',
+  webstorm: 'webstorm',
+  'webstorm.sh': 'webstorm',
+  goland: 'goland',
+  'goland.sh': 'goland',
+  rider: 'rider',
+  'rider.sh': 'rider',
+  zed: 'zed'
+}

frontend/node_modules/launch-editor/editor-info/macos.js

@@ -0,0 +1,50 @@
+module.exports = {
+  '/Applications/Atom.app/Contents/MacOS/Atom': 'atom',
+  '/Applications/Atom Beta.app/Contents/MacOS/Atom Beta':
+    '/Applications/Atom Beta.app/Contents/MacOS/Atom Beta',
+  '/Applications/Brackets.app/Contents/MacOS/Brackets': 'brackets',
+  '/Applications/Sublime Text.app/Contents/MacOS/Sublime Text':
+    '/Applications/Sublime Text.app/Contents/SharedSupport/bin/subl',
+  '/Applications/Sublime Text.app/Contents/MacOS/sublime_text':
+    '/Applications/Sublime Text.app/Contents/SharedSupport/bin/subl',
+  '/Applications/Sublime Text 2.app/Contents/MacOS/Sublime Text 2':
+    '/Applications/Sublime Text 2.app/Contents/SharedSupport/bin/subl',
+  '/Applications/Sublime Text Dev.app/Contents/MacOS/Sublime Text':
+    '/Applications/Sublime Text Dev.app/Contents/SharedSupport/bin/subl',
+  '/Applications/Visual Studio Code.app/Contents/MacOS/Code': 'code',
+  '/Applications/Visual Studio Code.app/Contents/MacOS/Electron': 'code',
+  '/Applications/Visual Studio Code - Insiders.app/Contents/MacOS/Code - Insiders':
+    'code-insiders',
+  '/Applications/Visual Studio Code - Insiders.app/Contents/MacOS/Electron':
+    'code-insiders',
+  '/Applications/VSCodium.app/Contents/MacOS/Electron': 'codium',
+  '/Applications/Cursor.app/Contents/MacOS/Cursor': 'cursor',
+  '/Applications/Trae.app/Contents/MacOS/Electron': 'trae',
+  '/Applications/Antigravity.app/Contents/MacOS/Electron': 'antigravity',
+  '/Applications/AppCode.app/Contents/MacOS/appcode':
+    '/Applications/AppCode.app/Contents/MacOS/appcode',
+  '/Applications/CLion.app/Contents/MacOS/clion':
+    '/Applications/CLion.app/Contents/MacOS/clion',
+  '/Applications/IntelliJ IDEA.app/Contents/MacOS/idea':
+    '/Applications/IntelliJ IDEA.app/Contents/MacOS/idea',
+  '/Applications/IntelliJ IDEA Ultimate.app/Contents/MacOS/idea':
+    '/Applications/IntelliJ IDEA Ultimate.app/Contents/MacOS/idea',
+  '/Applications/IntelliJ IDEA Community Edition.app/Contents/MacOS/idea':
+    '/Applications/IntelliJ IDEA Community Edition.app/Contents/MacOS/idea',
+  '/Applications/PhpStorm.app/Contents/MacOS/phpstorm':
+    '/Applications/PhpStorm.app/Contents/MacOS/phpstorm',
+  '/Applications/PyCharm.app/Contents/MacOS/pycharm':
+    '/Applications/PyCharm.app/Contents/MacOS/pycharm',
+  '/Applications/PyCharm CE.app/Contents/MacOS/pycharm':
+    '/Applications/PyCharm CE.app/Contents/MacOS/pycharm',
+  '/Applications/RubyMine.app/Contents/MacOS/rubymine':
+    '/Applications/RubyMine.app/Contents/MacOS/rubymine',
+  '/Applications/WebStorm.app/Contents/MacOS/webstorm':
+    '/Applications/WebStorm.app/Contents/MacOS/webstorm',
+  '/Applications/MacVim.app/Contents/MacOS/MacVim': 'mvim',
+  '/Applications/GoLand.app/Contents/MacOS/goland':
+    '/Applications/GoLand.app/Contents/MacOS/goland',
+  '/Applications/Rider.app/Contents/MacOS/rider':
+    '/Applications/Rider.app/Contents/MacOS/rider',
+  '/Applications/Zed.app/Contents/MacOS/zed': 'zed'
+}

frontend/node_modules/launch-editor/editor-info/windows.js

@@ -0,0 +1,29 @@
+module.exports = [
+  'Brackets.exe',
+  'Code.exe',
+  'Code - Insiders.exe',
+  'VSCodium.exe',
+  'Cursor.exe',
+  'atom.exe',
+  'sublime_text.exe',
+  'notepad++.exe',
+  'clion.exe',
+  'clion64.exe',
+  'idea.exe',
+  'idea64.exe',
+  'phpstorm.exe',
+  'phpstorm64.exe',
+  'pycharm.exe',
+  'pycharm64.exe',
+  'rubymine.exe',
+  'rubymine64.exe',
+  'webstorm.exe',
+  'webstorm64.exe',
+  'goland.exe',
+  'goland64.exe',
+  'rider.exe',
+  'rider64.exe',
+  'Trae.exe',
+  'zed.exe',
+  'Antigravity.exe'
+]