Restore raw collection content

Migration 093 adds committed terminal noncommit proofs: REST 409 storage_creation_rejected or storage_import_rejected, MCP isError with strict error.rejection (outcome, original operationId, known code, inventoryRevision). Exact accepted/rejected replay is permanent and precedes mutable reconstruction after current authority checks. Arbitrary conflicts, billing, cancellation, failed COMMIT and network errors remain unknown. Consumers must bind the trusted response to the original family, immutable intent and owner/session scope; proof alone never authorizes discard. Fresh complete current reads and explicit reconciliation are a separate consumer gate. MCP outputSchema describes accepted receipts only; holofolder.com/errorSchemas declares errors. Atomic JSON v2 arrangement into an empty or target-only native collection with an already identical copied manifest. Every copy needs an explicit add or versioned existing-copy move. Retain the immutable request after unknown outcome. Does not replace collections/configuration, import assets, restore changed same-owner snapshots or authorize backup IDs. Required permissions: `collection:write`, `binders:write`. MCP tool: `import_storage_arrangement`.