Minimal structural D1 surface — the same posture as SnapshotDatabase,
ApprovalDatabase, and ExecutionFenceDatabase, so every surface that must
reserve can hand over the binding it already holds with no cast and no second
seam. Tests back it with node:sqlite; Workers pass env.DB.
Minimal structural D1 surface — the same posture as SnapshotDatabase, ApprovalDatabase, and ExecutionFenceDatabase, so every surface that must reserve can hand over the binding it already holds with no cast and no second seam. Tests back it with node:sqlite; Workers pass
env.DB.