新增：合并请求关联疑修逻辑

app/services/pull_requests/create_service.rb

@@ -20,6 +20,7 @@ class PullRequests::CreateService < ApplicationService
       save_tiding!
       save_project_trend!
       save_custom_journal_detail!
+      save_pull_attached_issues!
     end
 
     [pull_request, gitea_pull_request]
@@ -111,6 +112,20 @@ class PullRequests::CreateService < ApplicationService
     end
   end
 
+  def save_pull_attached_issues!
+    if attached_issue_ids.size > 1 
+      raise "最多只能关联一个疑修。" 
+    else 
+      attached_issue_ids.each do |issue|
+        PullAttachedIssue.create!(issue_id: issue, pull_request_id: pull_request&.id)
+      end
+    end
+  end
+
+  def issue_tag_ids
+    Array(@params[:attached_issue_ids])
+  end
+
   def gitea_pull_request
     @gitea_pull_request ||= create_gitea_pull_request!
   end