Ensure Media.tag exists for all images after import and via cron

Webapp now creates Deploy/Control/Media.tag after every image import.
Cron updated to create (not just touch) Media.tag for any image
directory that has Deploy/Control/.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

playbook/pxe_server_setup.yml

@@ -391,9 +391,12 @@
         force: no
       loop: "{{ image_types }}"
 
-    - name: "Daily cron to refresh Media.tag (PESetup.exe 30-day expiry check)"
+    - name: "Daily cron to create/refresh Media.tag for all images"
       copy:
-        content: "@reboot root find {{ samba_share }}/*/Deploy/Control -name Media.tag -exec touch {} +\n0 0 * * * root find {{ samba_share }}/*/Deploy/Control -name Media.tag -exec touch {} +\n"
+        content: |
+          # Create Media.tag in any image with Deploy/Control/ and refresh existing ones
+          @reboot root for d in {{ samba_share }}/*/Deploy/Control; do [ -d "$d" ] && touch "$d/Media.tag"; done
+          0 0 * * * root for d in {{ samba_share }}/*/Deploy/Control; do [ -d "$d" ] && touch "$d/Media.tag"; done
         dest: /etc/cron.d/media-tag-refresh
         mode: '0644'
 

webapp/app.py

@@ -717,6 +717,12 @@ def images_import():
                 # Flat layout: treat source as Deploy contents
                 _import_deploy(source, dest, target, move=use_move)
 
+            # Ensure Media.tag exists (FlatSetupLoader.exe drive detection)
+            control_dir = os.path.join(dest, "Control")
+            os.makedirs(control_dir, exist_ok=True)
+            media_tag = os.path.join(control_dir, "Media.tag")
+            Path(media_tag).touch()
+
             audit("IMAGE_IMPORT", f"{source} -> {target}")
             flash(
                 f"Successfully imported content to {FRIENDLY_NAMES.get(target, target)}.",