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

models/crawl/columns.yaml

@@ -0,0 +1,27 @@
+# Crawls columns (UI-SPEC C24). status shows its label; pages_cell,
+# issues, trigger_cell and duration are filled by ListExtendRecords.
+columns:
+    started_at:
+        label: golem15.seo::lang.crawls.started_at
+        type: datetime
+        sortable: true
+    status:
+        label: golem15.seo::lang.crawls.status
+        type: text
+        sortable: true
+    pages_cell:
+        label: golem15.seo::lang.crawls.pages
+        type: text
+        sortable: false
+    issues:
+        label: golem15.seo::lang.crawls.issues
+        type: text
+        sortable: false
+    trigger_cell:
+        label: golem15.seo::lang.crawls.trigger
+        type: text
+        sortable: false
+    duration:
+        label: golem15.seo::lang.crawls.duration
+        type: text
+        sortable: false

models/crawl/fields.yaml

@@ -0,0 +1,29 @@
+# Crawl preview (UI-SPEC C24): every field is read-only.
+fields:
+    started_at:
+        label: golem15.seo::lang.crawls.started_at
+        type: datepicker
+        mode: datetime
+        span: left
+        context: preview
+    finished_at:
+        label: golem15.seo::lang.crawls.finished_at
+        type: datepicker
+        mode: datetime
+        span: right
+        context: preview
+    status:
+        label: golem15.seo::lang.crawls.status
+        type: dropdown
+        span: left
+        context: preview
+    trigger:
+        label: golem15.seo::lang.crawls.trigger
+        type: dropdown
+        span: right
+        context: preview
+    site:
+        label: golem15.seo::lang.crawls.site
+        type: text
+        span: full
+        context: preview