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teamchong
5c2f303cfd
src/proxy.py:125 was computing image height as tallest = max(lines_per_col, last_col_lines) if c_needed == 1 else lines_per_col The max(lines_per_col, ...) made every single-column render pad to the full MAX_EDGE=1568 canvas height regardless of content, wasting ~99% of the image-token budget for small prompts. Fix: tight-bound the single-column case. tallest = max(1, last_col_lines) if c_needed == 1 else lines_per_col Multi-column (c_needed > 1) is unchanged — all earlier columns must be lines_per_col tall to fit them, so the image must be too. Measured impact (scripts/visual_compare.py): sample before after change ----------- ------------ ------------ ----------- 17 chars 241x1568 241x14 -99% pixels 176 chars 241x1568 241x42 -97% pixels 885 chars 241x1568 241x315 -80% pixels Verified edge cases hold: - empty/short text: still gated by MIN_COMPRESS_CHARS - 5000-char single line: 241x441 (63 wrapped lines, tight) - 80-char boundary: 241x14 (2 lines, tight) - 500-line multi-column: 731x1568 (unchanged, correctly padded) - 20KB realistic system prompt: 68.5% savings (matches existing 65-73%) Added scripts/visual_compare.py to inspect Python vs Rust renderings side-by-side with labels and dimensions. This is the immediate win that's independent of the Rust rewrite — every proxied request gets fewer image tokens starting at the next proxy restart.