feat: Site audit and Crawls screens with their MCP tools

- golem15.seo.issues (Site audit): current issues errors first, labels,
  summary and fix columns, filters, P7 issue_details, Check this address
  again, Ignore, Stop ignoring, bulk Ignore, ignored rows badged
- golem15.seo.crawls (Crawls): newest first, P6 crawl_summary with one
  status callout, staging and rendered-comparison lines, stats strip and
  per-kind table; Cancel; a running crawl refuses delete
- Start crawl toolbar action on both, refusing already_running and
  no_site_url; navigation Site audit (gauge) and Crawls (globe)
- routes and MCP tools start/cancel/list/get/delete crawls, list_issues
  with filters (open by default), recheck_url, ignore and unignore
- AdminOperations maps both controllers; toolbar actions get their own
  operation kind
- TestCrawlAdmin, TestCrawlTools, TestIssueKindLabels

controllers/admin_registry.go

@@ -33,6 +33,8 @@ func AdminControllers(app func() *backpack.App) []pact.AdminController {
 		notFoundAdminController{app: app},
 		rulesAdminController{app: app},
 		pagesAdminController{app: app},
+		issuesAdminController{app: app},
+		crawlsAdminController{app: app},
 		robotsAdminController{app: app},
 		historyAdminController{app: app},
 		transferAdminController{app: app},