Revert health check to share the advisor's LLM client

Fix health check 400 error: use a vision-capable model

Fix health check: reuse the advisor's LLM client instead of a separate VL model

Fix link line on drag, add watering history, custom garden background, and photo-based health diagnostic

Allow hand-drawn links between neighboring plants on the garden board

Ground advisor answers in the selected plant's watering history

Switch advisor to Qwen2.5-Coder-3B-Instruct via nscale provider

Fix plant photo display and add temp advisor error logging

Add AI gardening advisor (Qwen2.5-3B-Instruct via HF Inference)

Upload folder using huggingface_hub

Upload folder using huggingface_hub