lineage_depth negative value

[connorhsm]

Suspected bug. Confirmation required.

I see in lineage lives, many Eve have the lineage_depth value of -1. The default value is 0, in theory <0 is not possible. Does -1 possibly have any other meaning elsewhere?

This became apparent due to the recent force depth recompute option due to lineage depth calculation issues, the lives this was performed on now have lineage_depth = -747 where generation = 747

Suspected lines
https://github.com/twohoursonelife/OneLifeWeb/blob/main/web/public/lineageServer/server.php#L1558
https://github.com/twohoursonelife/OneLifeWeb/blob/main/web/public/lineageServer/server.php#L2779