Run 38707461053 read the grey onboarding text after the local threshold, but not the white labels on the blue buttons: in the negative image the threshold drew a thick ring around each button, and tesseract output nothing inside it. The text image is now the difference of the screenshot from its morphological close and open, so dark and light text both become dark on white and step edges between regions cancel; one tesseract pass instead of two. Each shot keeps that image and tesseract's TSV in UI_OUT/ocr.
First iteration on f/ci-desktop: the core job builds libsimplex.so with scripts/desktop/build-lib-linux.sh on ubuntu-24.04 (GHC 9.6.3, direct-sqlcipher +openssl, no VLC) and caches it by source hash, with the cabal store cached separately. The app job builds :desktop:createDistributable with Corretto 17 and the repo's assets, runs :common:desktopTest, then starts the app under Xvfb and openbox with software rendering and drives onboarding to the chat list and typing in the search field with the ui helper (xdotool input, tesseract OCR to find text), saving numbered screenshots, the text read from them and a step log as artifacts.
spacedandy-agents-simplex