feat(inventory+loadouts): inventory mutations, multi slot loadouts

[EisigesEis]

Summary

• Reality update v2
  • Items properly consumed: Corrected response to POST inventory (excluded tonics, grenades, pylons, cores)
  • Upgrades do not need UI refresh or item equipped to update (same fix as previous point)
• Merge/avoid inventory db updates and parse/stringify where possible
• Loadout unlock, slot change and persist data
• Reject stale or invalid inventory and loadout updates (not much validation rn)

Testing

• Craft item and confirm
  • ingredients instantly used
  • item craft/upgrade status updates without equipped
• item consume blocked if regex set correctly in env
• progression unlocks loadout slots at appropriate times (quests/mastery)
• loadout slots unlockable by request
• loadout slots selectable and modifications persist

Future work

• Higher performance around loadout/inventory. Too much stringify/parse. Need serializer.