[SaladDay]

A fresh installation provides the private Provider state root, but E2B rejected setup because its own subdirectory did not exist. Create that single subdirectory in the existing E2B adapter constructor, then retain the existing validation of directory type and permissions. Existing state and receipts are never replaced or repaired; receipt-loss checks and Core’s one-shot allocation behavior are unchanged.

Exercise omitted-resource setup from a fresh state root and verify private creation, retained receipt bytes, unsafe-path rejection, and rejection of a missing installation root. Update configuration documentation and its Chinese translation, and remove the obsolete state-directory environment variable from the helper guide.

Validation: Go tests with race detection and go vet for E2B and execution; all 185 E2B Python tests; naming, docs and CI checks; all three website translation checks. E2B builds for Darwin and Windows, and execution builds for Darwin. The existing Windows execution build remains blocked by Linux syscall references in microsandbox/process.go.

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