docs: define initial quest board stories

knowledge/user-stories/us-007-expire-quests-and-claim-held-items.md

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+---
+type: User Story
+title: "US-007: Expire quests and claim held items"
+description: Hold delivered blocks and returned rewards until their owner safely claims them.
+status: backlog
+---
+
+# US-007: Expire quests and claim held items
+
+As a **quest issuer**, I want delivered blocks and returned rewards held at the shared quest board so that I can retrieve them safely.
+
+## Acceptance criteria
+
+- [ ] An uncompleted quest expires seven days after its creation time.
+- [ ] Expiration removes the quest from active listings and converts its exact escrowed reward into a claim for the issuer.
+- [ ] Completed-quest claims contain the exact block items delivered by the completing player.
+- [ ] Claims from completion, cancellation, and expiration can be collected through any registered board.
+- [ ] The board clearly distinguishes delivered blocks from returned rewards.
+- [ ] Online issuers receive a real-time message when items become claimable.
+- [ ] Offline issuers receive a message on their next login.
+- [ ] When player commands are enabled, `/quests claim` collects the same pending claims.
+- [ ] Items are inserted into the claimant's inventory where space permits; overflow is dropped safely at their feet with a clear message.
+- [ ] A claim is removed only after all of its items have been inserted or dropped successfully.
+- [ ] Pending claims and notification state survive logout and server restart without duplication or loss.
+- [ ] Automated tests verify expiry boundaries, each claim source, notifications, overflow, failure recovery, and persistence.
+
+## Related
+
+- [US-005: Deliver blocks and complete a quest](us-005-deliver-blocks-and-complete-a-quest.md)
+- [US-006: Cancel an owned quest](us-006-cancel-an-owned-quest.md)