fix(status): farve som Flows-listen, solgte køretøjer skjules og tasten er Alt+Insert

- En flow-traktors linje følger flowets niveau (venter/fejl) som Flows-listen.
- Solgte/slettede køretøjer (isDeleted, ingen/død rootNode) vises ikke under
  stået stille.
- Standardtasten er venstre Alt + Insert (S er spillets gå/bremse-akse).

docs/USER_MANUAL.md

@@ -338,7 +338,7 @@ have sold appears as *Removed building (no longer exists) — set NO*.
 
 ### Status window
 
-Press **left Alt + S** to toggle a small status window in the top right corner of the screen, just below
+Press **left Alt + Insert** to toggle a small status window in the top right corner of the screen, just below
 the game's info box. The key works both on foot and in a vehicle and can be changed under *Settings →
 Controls* (*AD Smart Pickup: status window*). The window refreshes every second and only shows sections
 that have something in them:
@@ -351,7 +351,8 @@ that have something in them:
 - **Chains** — only chains with a missing link: *Bread is missing a link: Flour*.
 - **Warnings** — factories the farm depends on that are switched off (*Switched off but needed: Fermenting
   silo 3*, see [Warning when a needed factory is switched off](#warning-when-a-needed-factory-is-switched-off)),
-  vehicles that have stood still for more than 2 minutes (without Smart Pickup holding them at Wait/outbound) and pending chain suggestions (*Chain: 2 suggestions*).
+  vehicles that have stood still for more than 2 minutes (without Smart Pickup holding them at Wait/outbound;
+  sold vehicles are not shown) and pending chain suggestions (*Chain: 2 suggestions*).
 
 At most 18 lines; the rest is summed up as *+k more*. The window is hidden while a menu or dialog is open,
 when the HUD is hidden and while you sleep. Whether it is on is saved per user in