Derive main-quest season routes at projection time

server/internal/userdata/projector.go

@@ -3,6 +3,7 @@ package userdata
 import (
 	"sort"
 
+	"lunar-tear/server/internal/questflow"
 	"lunar-tear/server/internal/store"
 )
 
@@ -10,6 +11,12 @@ type Projector func(user store.UserState) string
 
 var projectors = make(map[string]Projector)
 
+var questHandler *questflow.QuestHandler
+
+func SetQuestHandler(h *questflow.QuestHandler) {
+	questHandler = h
+}
+
 func register(tableName string, fn Projector) {
 	projectors[tableName] = fn
 }