Fix Sophtron schema drift

db/migrate/20260502120000_fix_sophtron_schema_drift.rb

@@ -0,0 +1,36 @@
+# Aligns sophtron tables with constraints that PR #596 added to db/schema.rb
+# without writing a corresponding migration. Idempotent so envs that already
+# match (e.g., those bootstrapped via db:schema:load) re-run cleanly.
+class FixSophtronSchemaDrift < ActiveRecord::Migration[7.2]
+  disable_ddl_transaction!
+
+  INDEX_NAME = "idx_unique_sophtron_accounts_per_item".freeze
+
+  def up
+    unless index_exists?(:sophtron_accounts, [ :sophtron_item_id, :account_id ], unique: true, name: INDEX_NAME)
+      add_index :sophtron_accounts,
+                [ :sophtron_item_id, :account_id ],
+                unique: true,
+                name: INDEX_NAME,
+                algorithm: :concurrently
+    end
+
+    change_column_null :sophtron_items, :user_id, false if column_nullable?(:sophtron_items, :user_id)
+    change_column_null :sophtron_items, :access_key, false if column_nullable?(:sophtron_items, :access_key)
+  end
+
+  def down
+    if index_exists?(:sophtron_accounts, name: INDEX_NAME)
+      remove_index :sophtron_accounts, name: INDEX_NAME, algorithm: :concurrently
+    end
+
+    change_column_null :sophtron_items, :user_id, true
+    change_column_null :sophtron_items, :access_key, true
+  end
+
+  private
+
+    def column_nullable?(table, column)
+      connection.columns(table).find { |c| c.name == column.to_s }&.null
+    end
+end