expose extra_prerequisite and forge chain in weapon api

app/blueprints/api/v1/weapon_blueprint.rb

@@ -13,7 +13,7 @@ module Api
       # Primary information
       fields :granblue_id, :element, :proficiency,
              :max_level, :max_skill_level, :max_awakening_level, :limit, :rarity,
-             :ax, :ax_type, :gacha, :promotions
+             :ax, :ax_type, :gacha, :promotions, :forge_order
 
       # Series - returns full object with flags if weapon_series is present, fallback to legacy integer
       field :series do |w|
@@ -46,7 +46,8 @@ module Api
         {
           flb: w.flb,
           ulb: w.ulb,
-          transcendence: w.transcendence
+          transcendence: w.transcendence,
+          extra_prerequisite: w.extra_prerequisite
         }
       end
 
@@ -115,6 +116,39 @@ module Api
             }
           }
         end
+
+        # Forge chain fields
+        field :forged_from do |w|
+          next nil unless w.forged_from.present?
+
+          parent = w.forged_from_weapon
+          next nil unless parent
+
+          {
+            id: parent.id,
+            granblue_id: parent.granblue_id,
+            name: {
+              en: parent.name_en,
+              ja: parent.name_jp
+            }
+          }
+        end
+
+        field :forge_chain do |w|
+          next nil unless w.forge_chain_id.present?
+
+          w.forge_chain.map do |weapon|
+            {
+              id: weapon.id,
+              granblue_id: weapon.granblue_id,
+              name: {
+                en: weapon.name_en,
+                ja: weapon.name_jp
+              },
+              forge_order: weapon.forge_order
+            }
+          end
+        end
       end
 
       # Separate view for raw data - only used by dedicated endpoint

app/controllers/api/v1/weapons_controller.rb

@@ -216,13 +216,13 @@ module Api
       def weapon_params
         params.require(:weapon).permit(
           :granblue_id, :name_en, :name_jp, :rarity, :element, :proficiency, :series, :new_series,
-          :flb, :ulb, :transcendence, :extra, :limit, :ax, :gacha,
+          :flb, :ulb, :transcendence, :extra, :extra_prerequisite, :limit, :ax, :gacha,
           :min_hp, :max_hp, :max_hp_flb, :max_hp_ulb,
           :min_atk, :max_atk, :max_atk_flb, :max_atk_ulb,
           :max_level, :max_skill_level, :max_awakening_level,
           :release_date, :flb_date, :ulb_date, :transcendence_date,
           :wiki_en, :wiki_ja, :wiki_raw, :gamewith, :kamigame,
-          :recruits,
+          :recruits, :forged_from, :forge_chain_id, :forge_order,
           nicknames_en: [], nicknames_jp: [], promotions: []
         )
       end