Reorganize repo: one folder per application under apps/.

Move docker/ and configs/ into apps/<name>/ with config/ subfolders.
Proxmox split into hosts/pve and hosts/dell-proxmox. Nginx under
infrastructure/. Update sync script, RESTORE.md, and per-app READMEs.

Co-authored-by: Cursor <cursoragent@cursor.com>

apps/guacamole/docker-compose.yml

@@ -0,0 +1,20 @@
+services:
+  guacamole:
+    container_name: Guacamole
+    image: jwetzell/guacamole
+
+    healthcheck:
+     test: curl -f http://localhost:8080/ || exit 1
+    mem_limit: 6g
+    cpu_shares: 1024
+    security_opt:
+      - no-new-privileges:false
+    restart: on-failure:5
+    ports:
+      - 8348:8080
+    volumes:
+      - /volume1/docker/guacamole:/config:rw
+    environment:
+      PUID: 1026
+      PGID: 100
+      TZ: Europe/Bucharest