Add outreach candidate editing controls

docs/database.md

@@ -65,6 +65,7 @@ The special legacy-unassigned account exists only to preserve rows created befor
 13. Browsing decisions are unique per account and thing. Before selecting, the service also checks for a `simulated-upvote` by any other owned account, but account-specific rejections do not unnecessarily reserve an item globally.
 14. A browsing selection is persisted as `pending` before any vote request. It becomes `submitted` only after Reddit confirms the authenticated upvote, or `failed` with the safe error reason; unconfirmed selections are never retried. Browsing rows never contribute to adaptive comment-growth promotion.
 15. Manual outreach clearing is a terminal audited transition, not deletion. It rejects discovered, screening, ready, and retryable candidates, releases their leases, and never changes a `sending` row whose remote outcome may be uncertain.
+16. Individual candidate removal follows the same audited transition. Prepared opener edits are allowed only in ready/retryable states; the transaction updates the queue snapshot and any matching processed-post projection, clears AI experiment attribution, and carries `operatorEdited: true` with model ID `operator-edited` through delivery.
 
 10. Recipient account status changes only after a definitive Reddit profile response. Transient lookup failures retain the previous value, and the shared check timestamp prevents duplicate lookups across account runtimes during the four-hour interval.