Add QuestObjectiveWiring with auto step advance/complete, hook into
GatherOperations, CraftOperations, EncounterCompletionOperations, and
QuestStateOperations accept/advance for inventory_has_item checks.
Nest gather_node_depleted hook in remainingGathers == 0 guard,
add E3M1-08 deny-branch out-of-scope note, and give README NEO-64
its own subsection anchor.