More track work

I used the layout designed on AnyRail to determine the exact position of the switches. All other tracks were adding from those "key" switches. In the end, all the positions were reported to ensure a coherent layout:

For example, I adjusted the position of the curved switch E1. I also decided to curve the track originally designed as straight for the freight station:

Significant progress on everything else:

I had some troubles with the yard tracks and ultimately decided to solder the rail joiners and only keep the flexibility with the isolated joiners at the switches.