添加 .gitignore 配置文件

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

.gitignore

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+# ====================
+# OS Files
+# ====================
+.DS_Store
+Thumbs.db
+ehthumbs.db
+*.swp
+*.swo
+*~
+.DS_Store
+
+# ====================
+# Editor & IDE
+# ====================
+# VS Code
+.vscode/
+*.code-workspace
+
+# JetBrains (IntelliJ, PyCharm, WebStorm, etc.)
+.idea/
+*.iml
+
+# Vim
+*.swp
+*.swo
+
+# Emacs
+*~
+
+# Sublime
+*.sublime-*
+
+# Atom
+.atom/
+
+# ====================
+# Build & Dependencies
+# ====================
+node_modules/
+.pnp
+.pnp.js
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+.yarn/
+dist/
+build/
+out/
+.next/
+.nuxt/
+
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+.env
+.venv
+env/
+venv/
+ENV/
+.eggs/
+*.egg-info/
+*.egg
+
+# ====================
+# Logs & Temporal
+# ====================
+*.log
+npm-debug.log*
+yarn-debug.log*
+lerna-debug.log*
+.DS_Store
+
+# ====================
+# Testing & Coverage
+# ====================
+coverage/
+.nyc_output/
+.coverage
+.coverage.*
+
+# ====================
+# Temporary Files
+# ====================
+tmp/
+temp/
+.cache/
+*.tmp
+*.temp
+
+# ====================
+# Documentation Build
+# ====================
+_site/
+.sass-cache/
+*.pdf
+*.zip
+
+# ====================
+# Environment & Secrets
+# ====================
+.env.local
+.env.*.local
+.envrc
+secrets.yaml
+credentials.json
+*.pem
+*.key
+
+# ====================
+# Git (internal use)
+# ====================
+.git/
+.gitignore  # 忽略自身不必要，提交时再加入