[leonardoaraujosantos]

A CyberWealth key saved in a DM now behaves like the other personal facts.

• Listed: "o que você sabe sobre mim?" / "what do you know about me?" in a DM includes Chave do CyberWealth: …Nd4k / CyberWealth key: …Nd4k. A channel listing never looks the key up, so it can't mention it.
• Show one: "qual é a minha chave do cyberwealth?" / "what's my cyberwealth key?" answers masked in a DM, says none is saved otherwise, and gives the fixed DM-only reply in a channel either way.
• Forget: "esqueça/apague minha chave do cyberwealth" / "forget my cyberwealth key" deletes only that key, confirmed in the asker's language. "Forget everything you know about me" now deletes it with the facts. /forget and Delete everything are unchanged.
• Replace: a new key replaces the old one (already an upsert; now tested end to end).

Implementation: new SHOW_KEY/FORGET_KEY fact actions in fact_intent (same precedence as the fact patterns); PersonalKeyStore.held reads only last4/created_at, never the ciphertext, and forget takes an optional service. AskService.attach_personal_keys is wired from the bot entrypoint.

Tests: unit (PT/EN routing, masking, channel parity, SHOW built with a store whose key_for raises, wiring through build_bot), integration (held under an unopenable secrets key, per-service forget), e2e (listed masked in a DM and absent from a channel listing, NL forget keeps the email, replace). README, docs/operations.md, capabilities text (EN/PT) and the add-cyberwealth-personal-keys spec and tasks are updated.