feat: auto-links screen, keyphrase feed and MCP tools

- SEO › Auto-links (golem15.seo.autolinks, after Pages): list by phrase
  with locale, origin and active filters, the disabled row state, the
  form with its refusals, history through a field-less extension
- toolbar Add focus keyphrases (from_keyphrases) and
  POST /autolinks/from-keyphrases
- GET/POST /autolinks, PUT /autolinks/{id}, DELETE /autolinks and the
  tools seo_list_autolinks, seo_create_autolink, seo_update_autolink,
  seo_delete_autolinks, seo_autolinks_from_keyphrases
- the settings tile description and the permission comment name
  auto-links and the site audit

extensions.go

@@ -43,6 +43,7 @@ func (p *Plugin) AdminActionExtensions() []pact.AdminActionExtension {
 	}
 	out = append(out, pact.AdminActionExtension{Controller: controllers.RulesControllerID, Form: p.ruleHistory()})
 	out = append(out, pact.AdminActionExtension{Controller: controllers.RedirectsControllerID, Form: p.redirectChecks()})
+	out = append(out, pact.AdminActionExtension{Controller: controllers.AutolinksControllerID, Form: p.autolinkHistory()})
 	out = append(out, pact.AdminActionExtension{Controller: controllers.RobotsControllerID, Form: p.robotsForm()})
 	return out
 }
@@ -116,6 +117,34 @@ func (p *Plugin) ruleHistory() *pact.AdminFormExtension {
 	}
 }
 
+// autolinkHistory is a field-less extension on the plugin's own Auto-links
+// controller: its Save sees the save's changes inside the save
+// transaction and records them in history, which purges the site's cached
+// pages (deletes are recorded by the controller).
+func (p *Plugin) autolinkHistory() *pact.AdminFormExtension {
+	return &pact.AdminFormExtension{
+		Permissions: []string{controllers.PermissionManage},
+		Save: func(ctx context.Context, in pact.AdminFormSave) (pact.AdminFormSaveResult, error) {
+			svc := p.Service()
+			if svc == nil {
+				return pact.AdminFormSaveResult{}, classes.ErrNotBooted
+			}
+			a, ok := in.Record.(*models.Autolink)
+			if !ok || a == nil {
+				return pact.AdminFormSaveResult{}, nil
+			}
+			before, after := classes.ChangesValues(in.Changes, in.Created)
+			return pact.AdminFormSaveResult{}, svc.Record(ctx, in.DB, classes.Change{
+				Kind:      models.SubjectAutolink,
+				SubjectID: in.ID,
+				What:      svc.Phrase("golem15.seo::lang.history.what_autolink", map[string]string{"phrase": a.Phrase}),
+				Before:    before,
+				After:     after,
+			})
+		},
+	}
+}
+
 func (p *Plugin) registry() *signpost.Registry {
 	if p == nil || p.app == nil {
 		return nil