Add DB-backed application tokens for the update endpoint

db/migrate/20260805000001_create_application_tokens.rb

@@ -0,0 +1,22 @@
+class CreateApplicationTokens < ActiveRecord::Migration[8.1]
+  def change
+    create_table :application_tokens, id: { type: :bigint, unsigned: true },
+                                      charset: "utf8mb4", collation: "utf8mb4_0900_ai_ci" do |t|
+      t.string :name, limit: 128, null: false
+      # Az owner osztályát a host adja (WarpEngine.config.application_token_owner_class),
+      # ezért nem lehet FK.
+      t.string :owner_type, limit: 128, null: false
+      t.bigint :owner_id, null: false, unsigned: true
+      t.string :token_digest, limit: 64, null: false
+      t.string :token_prefix, limit: 12, null: false
+      t.json :scopes
+      t.datetime :expires_at, precision: 3
+      t.datetime :last_used_at, precision: 3
+      t.datetime :deleted_at, precision: 3
+      t.timestamps precision: 3, null: true
+      t.index :token_digest, name: "idx_application_tokens_token_digest", unique: true
+      t.index [ :owner_type, :owner_id ], name: "idx_application_tokens_owner"
+      t.index :deleted_at, name: "idx_application_tokens_deleted_at"
+    end
+  end
+end