imgcli generated its own demo + benchmarks

[swperb]

A fitting one to open this category: imgcli rendered its own promo assets. The test card and demo images on the landing page were all generated by imgcli itself, and the benchmarks there (vs ImageMagick: ~8× faster resize, ~470× smaller install) are reproducible via bench/bench.sh.

Try it:

imgcli -i testsrc=640x480 card.png
imgcli -i card.png -vf "scale=320:-1,grayscale,edge" out.png

Made something with imgcli — a pipeline, a script, a weird filter chain? Show it off here. 🖼️