This bug is usually caused by obtaining the Vault-Tec prototypes note that unlocks the settlement happiness items. This note is carried by Valery Barstow and can be looted from her corpse. Alternatively, it can be obtained by using the scrapall command on the workshop, in which it will be added. Retrieving this note from the workshop will immediately break the quest as if you obtained it by killing Barstow. To fix this, the following console commands may be used:
Set DLC06RecipeUnlockSlotMachineExperimental to 0
Set DLC06RecipeUnlockSlotMachine to 0
Set DLC06RecipeUnlockSodaStationExperimental to 0
Set DLC06RecipeUnlockSodaStation to 0
Set DLC06RecipeUnlockPhoropterExperimental to 0
Set DLC06RecipeUnlockPhoropter to 0
Set DLC06RecipeUnlockPowerbikeExperimental to 0
Set DLC06RecipeUnlockPowerbike to 1
This should enable the Prototype Powerbike in the Special listing while removing the final products from the Resources > Vault-Tec menu.
Check the Vault : Resources tab first. If the quest is running, it should still be in Special.
After completing the quest, the Power Cycle 1000 can be mass produced. It is located on the Vault tab under Resources.
Resurrect the overseer.
setstage DLC06MQ02 200
(possibly the wrong quest or the wrong stage. All of this is unverified. '200' is stage 2 of https://fallout.fandom.com/wiki/Better_Living_Underground)
Do the quests.