TODO

fcterm
1. system monitor graphic ; run custom status script (eg wan.sh)
2. handle "more" line wrapping?
3. nodraw during restart/recovery
4. auto termtosvg mode
5. if in svg mode, we may need to downsize input buffer - more granular.

6. watch mem/freemem and annoying alert to avoid swap death.
7. rpi unicode annoyances.
8. add 1m/1k ln count to scrollbar
9. random core dump on startup when resizing
10. when resizing - showing old history multiple times
11. on start up, showing history for *a* pty - decide between
    autorestart and start.
12. on startup - dump some output, scrolling stops.

^[]11;red^G
^[]11;#rrggbb^G
https://invisible-island.net/xterm/ctlseqs/ctlseqs.pdf