Add XIAO wiki vector RAG

Improve dark mode readability

Enhance dark mode styles for Gradio app components

Import XIAO wiki knowledge chunks

Make Gradio app XIAO-specific

Expand XIAO knowledge base

Document AMD droplet deployment

Keep endpoint URLs environment-only

Fix Hugging Face Space metadata

Remove unused settings from diagnostics in retrieval and answer_question functions

Refactor app launch to use dynamic server settings and add dotenv loading for configuration

Add deployment documentation for self-hosting Qwen3-VL models on AMD MI300X

Initial XIAO Field Copilot Space