Add metadata support to RouteAccessRule model

- Create RouteAccessRuleLabelModel and RouteAccessRuleAnnotationModel
- Add one_to_many relationships for labels and annotations to RouteAccessRule
- Add database migrations for route_access_rule_labels and route_access_rule_annotations tables
- Fixes: undefined method 'labels' error in AccessRulePresenter

This enables metadata (labels/annotations) support for access rules,
required by the RFC changes that removed the 'name' field in favor
of using labels/annotations for metadata storage.

Author: rkoster

app/models/runtime/route_access_rule.rb

@@ -6,6 +6,12 @@ class RouteAccessRule < Sequel::Model(:route_access_rules)
                 primary_key: :id,
                 without_guid_generation: true
 
+    one_to_many :labels, class: 'VCAP::CloudController::RouteAccessRuleLabelModel', key: :resource_guid, primary_key: :guid
+    one_to_many :annotations, class: 'VCAP::CloudController::RouteAccessRuleAnnotationModel', key: :resource_guid, primary_key: :guid
+
+    add_association_dependencies labels: :destroy
+    add_association_dependencies annotations: :destroy
+
     def validate
       validates_presence :selector
       validates_presence :route_id

app/models/runtime/route_access_rule_annotation_model.rb

@@ -0,0 +1,11 @@
+module VCAP::CloudController
+  class RouteAccessRuleAnnotationModel < Sequel::Model(:route_access_rule_annotations)
+    set_primary_key :id
+    many_to_one :route_access_rule,
+                primary_key: :guid,
+                key: :resource_guid,
+                without_guid_generation: true
+
+    include MetadataModelMixin
+  end
+end

app/models/runtime/route_access_rule_label_model.rb

@@ -0,0 +1,9 @@
+module VCAP::CloudController
+  class RouteAccessRuleLabelModel < Sequel::Model(:route_access_rule_labels)
+    many_to_one :route_access_rule,
+                primary_key: :guid,
+                key: :resource_guid,
+                without_guid_generation: true
+    include MetadataModelMixin
+  end
+end

db/migrations/20260415000002_create_route_access_rule_labels.rb

@@ -0,0 +1,25 @@
+Sequel.migration do
+  up do
+    unless table_exists?(:route_access_rule_labels)
+      create_table :route_access_rule_labels do
+        primary_key :id
+        String :guid, null: false, size: 255
+        String :resource_guid, null: false, size: 255
+        String :key_prefix, size: 253
+        String :key_name, null: false, size: 63
+        String :value, null: false, size: 63
+        DateTime :created_at, null: false
+        DateTime :updated_at
+
+        index :guid, unique: true, name: :route_access_rule_labels_guid_index
+        index :resource_guid, name: :route_access_rule_labels_resource_guid_index
+        index %i[resource_guid key_prefix key_name], unique: true, name: :route_access_rule_labels_compound_index
+        foreign_key [:resource_guid], :route_access_rules, key: :guid, on_delete: :cascade, name: :fk_route_access_rule_labels_resource_guid
+      end
+    end
+  end
+
+  down do
+    drop_table(:route_access_rule_labels) if table_exists?(:route_access_rule_labels)
+  end
+end

db/migrations/20260415000003_create_route_access_rule_annotations.rb

@@ -0,0 +1,25 @@
+Sequel.migration do
+  up do
+    unless table_exists?(:route_access_rule_annotations)
+      create_table :route_access_rule_annotations do
+        primary_key :id
+        String :guid, null: false, size: 255
+        String :resource_guid, null: false, size: 255
+        String :key_prefix, size: 253
+        String :key, null: false, size: 1000
+        String :value, size: 5000
+        DateTime :created_at, null: false
+        DateTime :updated_at
+
+        index :guid, unique: true, name: :route_access_rule_annotations_guid_index
+        index :resource_guid, name: :route_access_rule_annotations_resource_guid_index
+        index %i[resource_guid key], unique: true, name: :route_access_rule_annotations_key_index
+        foreign_key [:resource_guid], :route_access_rules, key: :guid, on_delete: :cascade, name: :fk_route_access_rule_annotations_resource_guid
+      end
+    end
+  end
+
+  down do
+    drop_table(:route_access_rule_annotations) if table_exists?(:route_access_rule_annotations)
+  end
+end