## Story 009: Unblock someone and resume contact

**Persona:** Anna, 30, a German social organizer. She blocked someone six months ago after a bad conversation, but they've both moved on. She's reconsidering and wants to give the person another chance.

**Situation:**

Anna is reviewing her blocklist and sees the person's name. She decides that enough time has passed and wants to unblock. Once unblocked, she wants the conversation history to be searchable again.

**Need:**

As Anna, I want to unblock someone and resume seeing our conversation history, so that I can interact with them again if they reach out.

**Acceptance:**
- Anna can unblock someone from her blocklist view
- Once unblocked, messages from that person are delivered to Anna normally
- Anna can see her prior conversation history with that person again (subject to GDPR retention, so some old messages may be gone, but what remains is visible)

**Tier:** core

**Confusion-flags:**
- Unblock logic seems straightforward, but the historical message visibility is subtle: if Anna blocked someone after N messages, and GDPR retention has expired on M of them, does she see N-M messages when she unblocks? Yes, almost certainly. But does she see them in the same conversation thread, or is the history split? The Tweedles will know better than I do; I'm flagging it as a detail to nail.
