No environment support in Linux

I tried following the instructions at https://www.1password.dev/cli/secrets-environment-variables. It says "use version 2.33.0-beta.02 or later" and I have 2.34.1 on Ubuntu but I get:

$ op run --environment
[ERROR] 2026/06/12 08:32:31 unknown flag: --environment

I tried upgrading to 2.36.0-beta.03 but that fails to login:

$ ./op_v2.36.0-beta-03 vault list
[ERROR] 2026/06/15 09:14:33 connecting to desktop app: read: connection reset, make sure 1Password CLI is installed correctly, then open the 1Password app, select 1Password > Settings > Developer and make sure the 'Integrate with 1Password CLI' setting is turned on. If you're still having trouble connecting, visit https://www.1password.dev/cli/app-integration#troubleshooting for more help.