look-where-it-matters

Add tool-calling interface for on-demand high-resolution crop retrieval, enabling VLMs to first observe low-resolution global view then selectively request detailed crops. Achieves 80.3% of full-res performance (vs 80.46%) with only 36% of visual tokens, reducing wall-clock latency 4.4× (from 2.71s to 0.61s) through KV-cache reuse without architectural chan…

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