The read-only dry run of delete_playtable: every blocker the delete would answer (hard ones to resolve first, soft ones listed unwaived with the resolution codes to pass as acknowledge) and the projected cascade (people, views, fields, deps, cells with the queued ones, sources paused) plus what survives (companies kept). Nothing is locked or written: the counts are advisory, the delete re-checks under its lock. Show the user what dies before asking for the confirm; item is the table.

Contract:

• MCP tool preview_playtable_delete, registry package mcp.playtables/playtables, mount playtables.tables.
• Operation action, response envelope action.
• Flags: read only.