- Introduce WEBSOCKET_PROTOCOL derived from WEB_PROTOCOL (wss if https, else ws).
- Replace hardcoded websocket URLs in EspoCRM, Nextcloud and Taiga with {{ WEBSOCKET_PROTOCOL }}.
- Fix mautrix-imessage to use ws:// for internal synapse:8008.
- Standardize Pixelfed OIDC env spacing.
- Refactor Taiga variables to TAIGA_* naming convention and clean up EMAIL_BACKEND definition.
See: https://chatgpt.com/share/68af62fa-4dcc-800f-9aaf-cff746daab1e