feat: replace boilerplate with real MiniMax-M3 model info (428B, 1M ctx, MSA, MoE)

feat: use MiniMax logo image in header, avatar, and empty state

fix: merge two attach buttons into one unified 📎 modal

fix: add requirements.txt with openai and gradio

fix: valid HF Space YAML metadata (emoji, colorFrom, colorTo)

feat: MiniMax-M3 multimodal chat with gradio.Server + custom UI

initial commit