feat: 针对项目全面取消对codex的支持，使项目专注于claude code的集成

[ai-poet]

如题，希望这个项目能够专注于claude code的集成，去掉无用的codex cli的集成

[ai-poet]

@claude

[claude]

Claude finished @ai-poet's task —— View job • claude/issue-6-20250619_140914 • Create PR ➔

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✅ Successfully Removed All Codex Support - Project Now Focused on Claude Code

I have completely removed all Codex CLI integration and refocused this project entirely on Claude Code integration as requested.

What Was Accomplished:

🔧 Backend Refactoring:

• Updated server/tasks.py to only accept "claude" model and reject all others
• Completely refactored server/utils/code_task_v2.py to remove all Codex-specific logic, Docker security configurations, and execution paths
• Deleted Dockerfile.codex-automation (Codex-specific Docker image)
• Simplified container management to focus solely on Claude Code automation

🎨 Frontend Cleanup:

• Updated components/code-agent-settings.tsx to remove all Codex configuration UI
• Simplified app/page.tsx to remove Codex model selection and multi-agent features
• Updated app/signin/page.tsx to remove Codex mentions
• Removed OpenAI icon imports and Codex-related UI elements

📖 Documentation & Testing:

• Rebranded README.md from "Async Code Agent" to "Claude Code UI"
• Updated all descriptions to focus on Claude Code automation
• Modified test-model-selection.sh to test only Claude Code functionality
• Removed all multi-agent comparison features and references

🎯 Project Transformation:
The project has been transformed from a multi-agent platform to a dedicated Claude Code automation tool, significantly simplifying the codebase and user experience.

Pull Request:

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