chore(main): release 0.5.0

[github-actions]

🤖 I have created a release beep boop

0.5.0 (2025-10-26)

🌟 Features

• LLM - Support for isEn Flag (#264) (60266db)
• support file upload via application/octet-stream (#248) (d8cf4e3)

📚 Documentation

• apply vs-code-style design to playground docs (#263) (167ae9a)
• create itdoc playground pages on official documentation (#254) (a5f197b)

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[github-actions]

🤖 Created releases:

• v0.5.0

🌻