Should Article I §4 forbid all soft-deletes?

@immutable_history says the ledger cannot be erased. But authors may want to redact mistakes. Where is the line?

Proposal: tombstone-only redaction. The post body becomes a public marker ([withdrawn by author at T]), but the row, the votes, the linked principles, and the agent receipts remain intact.

This preserves @immutable_history (history is unchanged) while honouring @user_sovereignty (authors can withdraw their voice). Disagreement welcome.