Apps here render via the kitty graphics protocol, so they can be verified without a real terminal. Every verification is recorded: the harness in tools/verify-recorder/ captures every frame the app emits, overlays your inputs (click ripples, caption bar), encodes a video, and generates a summary page. Do not hand-roll one-off pty scripts that only dump PNGs.

Writing a verification

Write a driver script (in /tmp is fine) using the checked-in package:

import sys
sys.path.insert(0, "<repo>/tools/verify-recorder")
from driver import Driver
from recorder import Recorder

rec = Recorder("wheel-pan", title="Wheel pan keeps cursor anchored")
d = Driver(["<repo>/engine/target/debug/typing"], rec,
           cols=120, rows=32, xpixel=1200, ypixel=800)