Add tests for module ID inference fallback and on_load attachment

Agent-Logs-Url: https://github.com/openhab/openhab-jruby/sessions/d9c9a5cd-d6e9-4819-8e5a-38415ebe7788

Co-authored-by: ccutrer <191320+ccutrer@users.noreply.github.com>

Author: Copilot

spec/openhab/dsl/rules/builder_spec.rb

@@ -134,6 +134,25 @@ def triggered?
         end
         expect(my_rule.triggers.map(&:id)).to eq %w[my_test_rule:1 my_test_rule:2]
       end
+
+      it "uses a uuid as fallback trigger id when no rule uid is available" do
+        items.build { switch_item "MySwitch" }
+        rule_triggers = OpenHAB::DSL::Rules::RuleTriggers.new
+        trigger = rule_triggers.append_trigger(
+          type: "core.ItemStateChangeTrigger",
+          config: { "itemName" => "MySwitch" }
+        )
+        expect(trigger.id).to match(/\A[0-9a-f-]{36}\z/)
+      end
+
+      it "infers on_load module id from the rule uid" do
+        attachment = nil
+        rule id: "my_load_rule" do
+          on_load attach: :test_attach
+          run { |event| attachment = event.attachment }
+        end
+        expect(attachment).to eq :test_attach
+      end
     end
 
     describe "#on_start" do