Direct Cloud API Integration

[hddevteam]

Goal: Implement direct integration with multiple cloud AI providers (OpenAI, DeepSeek, Anthropic, Google).

Priority: High
Effort: Large

Acceptance Criteria:

• Support for OpenAI GPT models (GPT-4, GPT-3.5-turbo)
• Support for DeepSeek models (DeepSeek-R1, DeepSeek-V3)
• Support for Anthropic Claude models
• Support for Google Gemini models
• Configurable API endpoints and authentication

Technical Tasks:

• Create base API adapter interface
• Implement OpenAI adapter
• Implement DeepSeek adapter
• Implement Anthropic adapter
• Implement Google Gemini adapter
• Create adapter factory pattern
• Add error handling and retry logic

Related Epic: #1