Nextcloud: integrate Talk & Whiteboard; adjust ports & healthchecks

- Enable Spreed (Talk); signaling via /standalone-signaling/
- STUN/TURN: move STUN to 3480 (3479 occupied by BBB), keep TURN 5350 reserved
- docker-compose: expose internal WS ports; explicit TURN port mapping
- Healthchecks: add nc-based TCP checks (roles/docker-container/templates/healthcheck/nc.yml.j2)
- Nginx: location proxy to talk:8081
- Schema: add talk_* secrets (turn/signaling/internal)
- Plugins: configure spreed/whiteboard via vars/*; remove old task files
- Ports matrix (group_vars/all/09_ports.yml) updated/commented

Conversation: https://chatgpt.com/share/68b61a6a-e1dc-800f-b793-4aa600bc0166

roles/web-app-nextcloud/tasks/_plugin_b_enable_and_configure.yml

@@ -34,6 +34,7 @@
   failed_when: not ASYNC_ENABLED and config_set_shell.rc != 0
   async: "{{ ASYNC_TIME if ASYNC_ENABLED | bool else omit }}"
   poll:  "{{ ASYNC_POLL if ASYNC_ENABLED | bool else omit }}"
+  no_log: "{{ MASK_CREDENTIALS_IN_LOGS | default(true) | bool }}"
 
 - name: Check if {{ plugin_task_path }} exists
   stat:

roles/web-app-nextcloud/tasks/plugins/whiteboard.yml

@@ -1,9 +0,0 @@
-- name: Set Whiteboard Configuration
-  ansible.builtin.shell: >
-    {{ NEXTCLOUD_DOCKER_EXEC_OCC }} config:app:set whiteboard collabBackendUrl --value='{{ NEXTCLOUD_WHITEBOARD_URL }}'
-    && {{ NEXTCLOUD_DOCKER_EXEC_OCC }} config:app:set whiteboard jwt_secret_key --value='{{ NEXTCLOUD_WHITEBOARD_JWT }}'
-  args:
-    executable: /bin/bash
-  async: "{{ ASYNC_TIME if ASYNC_ENABLED | bool else omit }}"
-  poll:  "{{ ASYNC_POLL if ASYNC_ENABLED | bool else omit }}"
-  no_log: "{{ MASK_CREDENTIALS_IN_LOGS | bool }}"