Close the last four headers, and say what the destructive tools refuse to do

Plugin/unraid/Tools/ui_map_build.php

@@ -5,6 +5,12 @@
 //   to reach it. Generated so the assistant can answer "how do I change X" with a path through
 //   the pages instead of an instruction to open master.conf.
 //
+// OPERATIONAL MODEL
+//   Reads the section registries and the conf files, resolves each setting to the page and card
+//   that renders it, and writes the whole map in one pass. Nothing is merged with what is
+//   already there — the output is derived entirely from the registries, so a stale entry cannot
+//   survive a rebuild.
+//
 // DESIGN PRINCIPLES
 //   The assistant cannot see the UI any other way.
 //       The retrieval index reads git-tracked files. PHP body markup is not indexed and would be
@@ -26,12 +32,6 @@
 //       with no route through the UI is a real finding, and this map is the only thing that
 //       would ever notice.
 //
-// OPERATIONAL MODEL
-//   Reads the section registries and the conf files, resolves each setting to the page and card
-//   that renders it, and writes the whole map in one pass. Nothing is merged with what is
-//   already there — the output is derived entirely from the registries, so a stale entry cannot
-//   survive a rebuild.
-//
 // OPERATIONAL SAFEGUARDS
 //   Writes exactly one file, pages/readme/ui-map.md, and nothing else. No conf is modified, no
 //   page is touched, and the registries it reads are only read.