Directory Submission Retention Proof

The retention_* tools each target a distinct artifact (diff, escrow receipt, recovery packet), and watch_create/watch_check are separated by creation versus execution. There is minor conceptual overlap between retention_packet and the diff/receipt tools since the packet bundles them, but descriptions still make the boundary clear.

All names use consistent snake_case with a clear namespace_action pattern: retention_diff, retention_escrow, retention_packet, watch_check, watch_create. The prefixes cleanly separate the two functional areas.

Five tools is well-scoped for this niche workflow: three retention operations and two watch operations. Each tool has a clear role and the set does not feel padded or excessively thin.

The surface covers escrow creation, diffing, recovery packets, and watch creation/checking, which handles core workflows. However, watch lifecycle management is incomplete—there is no list, update, cancel, or delete watch operation—and no explicit receipt verification tool.