📦 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/eslint-plugin-react/lib/rules/jsx-no-literals.d.ts

@@ -0,0 +1,13 @@
+declare const _exports: RuleModule;
+export = _exports;
+export type RuleModule = import("eslint").Rule.RuleModule;
+export type Config = {
+    type: "element";
+} & import("../../types/rules/jsx-no-literals").ElementConfigProperties & import("../../types/rules/jsx-no-literals").ElementOverrides;
+export type RawConfig = import("../../types/rules/jsx-no-literals").RawElementConfig & import("../../types/rules/jsx-no-literals").RawElementOverrides;
+export type ResolvedConfig = import("../../types/rules/jsx-no-literals").OverrideConfig | import("../../types/rules/jsx-no-literals").Config;
+export type OverrideConfig = import("../../types/rules/jsx-no-literals").OverrideConfigProperties & import("../../types/rules/jsx-no-literals").ElementConfigProperties;
+export type ElementConfig = {
+    type: "element";
+} & import("../../types/rules/jsx-no-literals").ElementConfigProperties;
+//# sourceMappingURL=jsx-no-literals.d.ts.map