Summary

Refresh the benchmark summary figure so both panels focus on compression outcomes instead of mixing compression and runtime.

What Changed

• relabel the left panel as Minification while keeping the current minify-only data and layout
• replace the right panel with minify-plus-wheel compression data from benchmarks/README.md
• regenerate benchmarks/summary.svg from benchmarks/plot.py
• update the README image alt text to match the new figure content

Why

The previous chart mixed two different dimensions: minify-only compression on the left and runtime on the right. This follow-up makes the figure compare two compression-oriented views side by side.

Impact

• readers can compare raw minification against minify-plus-wheel compression in one figure
• the checked-in SVG remains reproducible from the stdlib-only generator
• no runtime package behavior changes

Validation

• ran python3 benchmarks/plot.py
• ran xmllint --noout benchmarks/summary.svg
• ran git diff --check