feat(nextcloud): integrate Talk & Whiteboard; refactor to NEXTCLOUD_* vars; full-stack setup

config(ports): add Nextcloud websocket port (4003); canonical domains (nextcloud/talk/whiteboard)

refactor: unify get_app_conf usage & Jinja spacing; migrate paths/handlers to new NEXTCLOUD_* vars

feat(plugins): split plugin routines; configure Whiteboard via occ (URL + JWT)

fix(oidc): use NEXTCLOUD_URL for logout; correct LDAP attribute mappings; add OIDC flavor switch

feat: Whiteboard container & reverse-proxy location; Talk STUN/WS ports; Redis URL for Whiteboard

chore: drop obsolete TODO; minor cleanups in oauth2-proxy, matrix, peertube, pgadmin, phpldapadmin, pixelfed, phpmyadmin

security(schema): Bluesky jwt_secret now base64_prefixed_32; add Nextcloud whiteboard_jwt_secret

db: normalize postgres image tag templating; central DB host checks spacing fixes

ops: add full-stack bootstrap (certs, proxy, volumes); internal nginx config reload handler update

refs: https://chatgpt.com/share/68b5f5b7-8d64-800f-b001-1241f818dc0e

roles/web-app-matrix/templates/mautrix/facebook.config.yml.j2

@@ -39,7 +39,7 @@ appservice:
     # Format examples:
     #   SQLite:   sqlite:filename.db
     #   Postgres: postgres://username:password@hostname/dbname
-    database: postgres://mautrix_facebook_bridge:{{applications | get_app_conf(application_id, 'credentials.mautrix_facebook_bridge_database_password', True)}}@{{ database_host }}/mautrix_facebook_bridge
+    database: postgres://mautrix_facebook_bridge:{{ applications | get_app_conf(application_id, 'credentials.mautrix_facebook_bridge_database_password', True)}}@{{ database_host }}/mautrix_facebook_bridge
     # Additional arguments for asyncpg.create_pool() or sqlite3.connect()
     # https://magicstack.github.io/asyncpg/current/api/index.html#asyncpg.pool.create_pool
     # https://docs.python.org/3/library/sqlite3.html#sqlite3.connect