docs: 更新 README 文档并优化项目结构

- 更新 README 文档，增加项目简介、功能特性、技术栈等内容
- 优化 .gitignore 文件，添加更多需要忽略的文件和目录
- 调整项目结构，为开发环境搭建提供更详细的说明

.gitignore

@@ -1,7 +1,73 @@
-/.nyc_output
-/coverage
-/node_modules
-/sign
-/dist
-/build
-.husky/
+# Dependencies
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+package-lock.json
+
+# Build outputs
+/build/
+/dist/
+*.rpk
+
+# Signing certificates and private keys
+/sign/
+*.pem
+*.p12
+*.keystore
+
+# Coverage reports
+/.nyc_output/
+/coverage/
+
+# Logs
+*.log
+logs/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+lerna-debug.log*
+
+# Runtime data
+pids/
+*.pid
+*.seed
+*.pid.lock
+
+# IDE and Editor files
+.vscode/
+.idea/
+*.iml
+*.swp
+*.swo
+*~
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+Thumbs.db
+
+# Temporary files
+*.tmp
+*.temp
+.cache/
+
+# Environment variables
+.env
+.env.local
+.env.development.local
+.env.test.local
+.env.production.local
+
+# Test fixtures
+/tests/fixtures/
+
+# Husky
+.husky/
+
+# Claude Code settings (keeping local config only)
+.claude/settings.local.json