chore: normalize quote style in playbooks

Standardize single quotes to double quotes for consistency.

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

playbooks/deploy.yml

@@ -171,7 +171,7 @@
       ansible.builtin.file:
         path: /root/data
         state: directory
-        mode: '0777'
+        mode: "0777"
 
     - name: Run image.
       community.docker.docker_container: