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

crawler_test.go

@@ -323,7 +323,7 @@ func TestIssueMerge(t *testing.T) {
 	}
 	site.plant(doc{path: "/p/fixme", title: "Fix me"})
 	second := env.crawlOnce(t, token, ctx)
-	list = env.issues(t, token, "")
+	list = env.issues(t, token, "status=all")
 	again := findIssue(t, list, "heading_skipped", "/cat/news")
 	if !again.Ignored || again.CrawlID == nil || *again.CrawlID != second {
 		t.Fatalf("ignored issue in the next crawl = %+v", again)