Fix hidden_size: 4096 -> 3584 to match Qwen2.5-Coder-7B-Instruct

Add project context doc and WebSight batch uploader

Add WebSight vision data pipeline: download script, image-aware data loader, phase data routing

Add GPU diagnostic script, fix architecture loading with low_cpu_mem_usage and sync

Fix train.py: mem -> memory on line 225

Day 3 COMPLETE: Full model architecture

Day 2 COMPLETE: 1.48M examples processed, 6GB dataset, WebSight done

Day 1 Complete: Tokenizer setup — Qwen2.5-Coder-7B base + 22 MINDI special tokens (vocab 151,685), wrapper class, full format test

feat: initial project scaffold for MINDI 1.5 Vision-Coder