Add comprehensive RunPod AI API integration including:
- New runpodApi.ts client for RunPod endpoint communication
- Image generation tool and shape utilities for AI-generated images
- Enhanced LLM utilities with RunPod support for text generation
- Updated Whisper transcription with improved error handling
- UI components for image generation tool
- Setup and testing documentation
This commit preserves work-in-progress RunPod integration before switching branches.
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Co-Authored-By: Claude <noreply@anthropic.com>
