Add structured headers to the PHP include layer, fix monitor state paths

All 16 include/ files now carry PURPOSE / DESIGN PRINCIPLES / OPERATIONAL
SAFEGUARDS / EXPORTS / CONFIGURATION, keeping the first three section names
identical to the bash headers so retrieval can route across both languages.

monitor.php read six watchdog state files from /tmp while the watchdogs write
to STATE_DIR, so every strike set came back empty and the summary reported
healthy unconditionally. docs.php gained path containment before it is wired
to a page.

Plugin/unraid/include/docker_folders.php

@@ -1,4 +1,29 @@
 <?php
+// ═══════════════════════════════════════════════════════════════════════════════════════════════
+// PURPOSE
+//   Small compatibility layer over docker.php — resolves a container's WebUI URL and returns
+//   the folder grouping in the shape older callers expect.
+//
+// DESIGN PRINCIPLES
+//   Thin by intent. The folder store and inventory live in docker.php; this file only adapts
+//   their output. New work belongs there, not here.
+//
+//   WebUI resolution reads the dockerMan template, which is where Unraid records the port and
+//   path a container's UI actually lives on — not guessed from the published ports.
+//
+// OPERATIONAL SAFEGUARDS
+//   A container with no template, or no WebUI declared, returns empty and simply renders
+//   without a link. Absence is normal, not an error.
+//
+//   Read-only. Resolves and reshapes; the store is written only through docker.php.
+//
+// EXPORTS
+//   vv_container_webui()     WebUI URL for one container, or empty
+//   vv_get_docker_folders()  folder grouping in the legacy shape
+//
+// CONFIGURATION
+//   Inherits everything from docker.php — see that file's CONFIGURATION block.
+// ═══════════════════════════════════════════════════════════════════════════════════════════════
 require_once __DIR__ . '/config.php';
 require_once __DIR__ . '/docker.php';