* build out zombie lease system
* add typo for CI
* undo test CI commit
* time equality test isn't working on CI, so let's see what this does...
* add unrecoverable proto error, make proto, go mod vendor
* zombify leases if unrecoverable error, tests
* test fix: somehow pointer in pointer rx is null after pointer rx called
* tweaks based on roy feedback
* improve zombie errors
* update which errors are unrecoverable
* combine zombie logic
* keep subset of zombie lease in memory
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