With no local vault in 1PW8, what's the disaster recovery plan?

My primary vault is synced via Dropbox, and I semi-regularly update an offsite physical hard drive with a copy of the vault. The only password I know is the One Password for that vault.

I can lose my phone & laptop in a single instant, but with that offsite drive, I can bootstrap my wired life from scratch, only knowing my One Password.

How do I do something similar with 1Password 8?

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