Add Kiosk Control: live web UI for managing fullpageos.txt and rotation speed

[willryker]

What this adds

tools/kiosk-control/ — a small, stdlib-only Python web UI that lets you add, remove, reorder FullPageOS's kiosk pages and change the rotation interval live, without a reboot for routine changes.

Today, editing /boot/firmware/fullpageos.txt and its rotation interval both require an SSH session and a reboot to take effect. This adds a local web page (default port 7077, reachable from a phone or laptop on the same network) where you can manage both, with changes pushed to the running Chromium session immediately (via its remote-debugging/CDP port) and written back to fullpageos.txt so they also survive the next reboot.

Files

app.py is the web server itself (stdlib only, no pip install needed). kiosk-control.service is the systemd unit that runs it. start_chromium_browser is patched to add --remote-debugging-port=9222 (the only change from stock; every other flag is untouched). rotate_tabs.sh is patched to re-read the rotation interval from a file each loop instead of a hardcoded sleep. README.md covers install steps, including a real gotcha found while testing on a Bookworm-based nightly: /boot/firmware there is FAT32/vfat, so chown can't set per-file ownership (fails with "Operation not permitted" even as root) — the README covers the fstab-based fix instead.

Testing

Built and deployed against a Raspberry Pi 5 running the FullPageOS 0.14.0 Bookworm nightly. Verified end-to-end: added/removed/reordered pages and changed rotation speed via the web UI, confirmed changes applied live with no reboot, and confirmed fullpageos.txt stayed in sync for a subsequent reboot.

Happy to adjust structure/naming/scope if you'd like this organized differently.

[guysoft]

Does this replace FullPageOSDashboard or works with it?
The idea of /boot/firmware/fullpageos.txt is not to modify it over ssh, but you can write to it when flashing the sd card.
This may be an improvement but I am not sure what everyone workflow currently. So would value input.

[willryker]

It works with FullPageDashboard, doesn't replace it. The tab rotation stuff is untouched. Kiosk Control edits the same fullpageos.txt and rotation interval through a small web UI and pushes the change live over Chromium's debug port, instead of SSH + manual edit + reboot every time.

You're right that's not the original design. My use case: kiosk's been running a while and I want to tweak the page list / rotation speed occasionally without re-flashing the SD card each time. This is meant to be optional, not a replacement for flash-time config.