Add migrations for skill tables

These tables allow us to store data about:
* Character and Weapon charge attacks
* Character active and support skills
* Weapon skills
* Summon calls
* Summon auras and subauras

db/migrate/20250302080159_create_effects.rb

@@ -0,0 +1,21 @@
+class CreateEffects < ActiveRecord::Migration[8.0]
+  def change
+    create_table :effects, id: :uuid do |t|
+      t.string :name_en, null: false
+      t.string :name_jp
+      t.text :description_en
+      t.text :description_jp
+      t.string :icon_path
+      t.integer :effect_type, null: false # 1=buff, 2=debuff, 3=special
+      t.string :effect_class # classification (cant_act, burn, poison)
+      t.uuid :effect_family_id # no foreign key here
+      t.boolean :stackable, default: false
+      t.timestamps null: false
+    end
+
+    add_foreign_key :effects, :effects, column: :effect_family_id
+
+    add_index :effects, :effect_class
+    add_index :effects, :name_en
+  end
+end

db/migrate/20250302080203_create_skills.rb

@@ -0,0 +1,17 @@
+class CreateSkills < ActiveRecord::Migration[8.0]
+  def change
+    create_table :skills, id: :uuid do |t|
+      t.string :name_en, null: false
+      t.string :name_jp
+      t.text :description_en
+      t.text :description_jp
+      t.integer :border_type # 1=red(dmg), 2=green(heal), 3=yellow(buff), 4=blue(debuff), 5=purple(field)
+      t.integer :cooldown
+      t.integer :skill_type # 1=character, 2=weapon, 3=summon call, 4=charge attack
+      t.timestamps null: false
+    end
+
+    add_index :skills, :name_en
+    add_index :skills, :skill_type
+  end
+end

db/migrate/20250302080212_create_skill_values.rb

@@ -0,0 +1,14 @@
+class CreateSkillValues < ActiveRecord::Migration[8.0]
+  def change
+    create_table :skill_values, id: :uuid do |t|
+      t.references :skill, type: :uuid, null: false
+      t.integer :level, null: false, default: 1 # skill level or uncap level
+      t.decimal :value # numeric value for multiplier
+      t.string :text_value # text description for non-numeric values
+      t.timestamps null: false
+    end
+
+    add_foreign_key :skill_values, :skills
+    add_index :skill_values, %i[skill_id level], unique: true
+  end
+end

db/migrate/20250302080218_create_skill_effects.rb

@@ -0,0 +1,23 @@
+class CreateSkillEffects < ActiveRecord::Migration[8.0]
+  def change
+    create_table :skill_effects, id: :uuid do |t|
+      t.references :skill, type: :uuid, null: false
+      t.references :effect, type: :uuid, null: false
+      t.integer :target_type # 1=self, 2=ally, 3=all allies, 4=enemy, 5=all enemies
+      t.integer :duration_type # 1=turns, 2=seconds, 3=indefinite, 4=one-time
+      t.integer :duration_value # number of turns/seconds if applicable
+      t.text :condition # condition text
+      t.integer :chance # percentage chance to apply
+      t.decimal :value # value for effect if applicable
+      t.decimal :cap # cap for effect if applicable
+      t.boolean :local, default: true # local vs global effect
+      t.boolean :permanent, default: false # permanent
+      t.boolean :undispellable, default: false # can't be dispelled
+      t.timestamps null: false
+    end
+
+    add_foreign_key :skill_effects, :skills, name: 'fk_skill_effects_skills'
+    add_foreign_key :skill_effects, :effects, name: 'fk_skill_effects_effects'
+    add_index :skill_effects, %i[skill_id effect_id target_type]
+  end
+end

db/migrate/20250302080224_create_character_skills.rb

@@ -0,0 +1,19 @@
+class CreateCharacterSkills < ActiveRecord::Migration[8.0]
+  def change
+    create_table :character_skills, id: :uuid do |t|
+      t.string :character_granblue_id, null: false
+      t.references :skill, type: :uuid, null: false
+      t.integer :position, null: false # 1, 2, 3, 4 for skill slots
+      t.integer :unlock_level # level when skill unlocked
+      t.integer :improve_level # level when skill improved (+)
+      t.references :alt_skill, type: :uuid
+      t.text :alt_condition # condition for alt version
+      t.timestamps null: false
+    end
+
+    add_foreign_key :character_skills, :skills
+    add_foreign_key :character_skills, :skills, column: :alt_skill_id
+    add_index :character_skills, %i[character_granblue_id position]
+    add_index :character_skills, :character_granblue_id
+  end
+end

db/migrate/20250302080231_create_weapon_skills.rb

@@ -0,0 +1,19 @@
+class CreateWeaponSkills < ActiveRecord::Migration[8.0]
+  def change
+    create_table :weapon_skills, id: :uuid do |t|
+      t.string :weapon_granblue_id, null: false
+      t.references :skill, type: :uuid, null: false
+      t.integer :position, null: false # 1, 2, 3 for skill slots
+      t.string :skill_modifier # Modifier like "Might", "Majesty"
+      t.string :skill_series # Series like "Ironflame", "Hoarfrost"
+      t.string :skill_size # Size like "Small", "Medium", "Big", "Massive"
+      t.integer :unlock_level # level when skill unlocked
+      t.timestamps null: false
+    end
+
+    add_foreign_key :weapon_skills, :skills
+    add_index :weapon_skills, %i[weapon_granblue_id position]
+    add_index :weapon_skills, :weapon_granblue_id
+    add_index :weapon_skills, :skill_series
+  end
+end

db/migrate/20250302080239_create_summon_auras.rb

@@ -0,0 +1,18 @@
+class CreateSummonAuras < ActiveRecord::Migration[8.0]
+  def change
+    create_table :summon_auras, id: :uuid do |t|
+      t.string :summon_granblue_id, null: false
+      t.text :description_en
+      t.text :description_jp
+      t.integer :aura_type # 1=main, 2=sub
+      t.integer :boost_type # 1=weapon skill, 2=elemental, 3=stat
+      t.string :boost_target # what is being boosted
+      t.decimal :boost_value # percentage value
+      t.integer :uncap_level # 0, 3, 4, 5 for uncap level
+      t.text :condition # any conditions
+      t.timestamps null: false
+    end
+    add_index :summon_auras, %i[summon_granblue_id aura_type uncap_level]
+    add_index :summon_auras, :summon_granblue_id
+  end
+end

db/migrate/20250302080243_create_summon_calls.rb

@@ -0,0 +1,18 @@
+class CreateSummonCalls < ActiveRecord::Migration[8.0]
+  def change
+    create_table :summon_calls, id: :uuid do |t|
+      t.string :summon_granblue_id, null: false
+      t.references :skill, type: :uuid, null: false
+      t.integer :cooldown
+      t.integer :uncap_level # 0, 3, 4, 5 for uncap level
+      t.references :alt_skill, type: :uuid
+      t.text :alt_condition # condition for alt version
+      t.timestamps null: false
+    end
+
+    add_foreign_key :summon_calls, :skills
+    add_foreign_key :summon_calls, :skills, column: :alt_skill_id
+    add_index :summon_calls, %i[summon_granblue_id uncap_level]
+    add_index :summon_calls, :summon_granblue_id
+  end
+end

db/migrate/20250302080540_create_charge_attacks.rb

@@ -0,0 +1,17 @@
+class CreateChargeAttacks < ActiveRecord::Migration[8.0]
+  def change
+    create_table :charge_attacks, id: :uuid do |t|
+      t.string :owner_id, null: false # can be character_granblue_id or weapon_granblue_id
+      t.string :owner_type, null: false # "character" or "weapon"
+      t.references :skill, type: :uuid, null: false
+      t.integer :uncap_level # 0, 3, 4, 5 for uncap level
+      t.references :alt_skill, type: :uuid
+      t.text :alt_condition # condition for alt version
+      t.timestamps null: false
+    end
+
+    add_foreign_key :charge_attacks, :skills
+    add_foreign_key :charge_attacks, :skills, column: :alt_skill_id
+    add_index :charge_attacks, %i[owner_type owner_id uncap_level]
+  end
+end