chore: 添加 .gitignore 配置文件

- 添加标准忽略规则
- 排除 .spec-workflow 目录

.gitignore

@@ -0,0 +1,44 @@
+# Dependencies
+node_modules/
+.pnpm-store/
+.spec-workflow
+
+# Build outputs
+dist/
+build/
+out/
+
+# IDE & Editor
+.idea/
+.vscode/
+*.swp
+*.swo
+.DS_Store
+Thumbs.db
+
+# Logs
+logs/
+*.log
+npm-debug.log*
+
+# Environment files
+.env
+.env.local
+.env.*.local
+
+# OS generated files
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+ehthumbs.db
+
+# Temporary files
+*.tmp
+*.temp
+.cache/
+
+# Claude Code
+.claude/worktrees/
+.claude/scheduled_tasks.json