feat(gear): add final unbreakable Elytra reward

design/concepts/persistence-model.md

@@ -12,10 +12,12 @@ Durable player state includes participation status, opt-out deadline, login hist
 
 Elapsed-time rules use UTC instants. Paused time is excluded from timers. Saves use atomic replacement where supported, preserve unknown fields where practical, and reject corrupt records rather than granting powers, assignments, or duplicated entities.
 
-The historical `game.claimed-armor` list stores all nine legacy reward enum values. Original armor values remain unchanged; absent state means no claims. Claim state resets with the reign, not when an item is transferred or lost. Delivered equipment has no role binding and remains in ordinary Minecraft item storage.
+The historical `game.claimed-armor` list stores the nine regular legacy reward enum values plus `ELYTRA` for the final collection reward. Elytra eligibility uses exactly the nine regular current-reign claims, never item possession or Elytra itself. Original armor values remain unchanged; absent state means no claims. Claim state resets with the reign, not when an item is transferred or lost. Delivered equipment has no role binding and remains in ordinary Minecraft item storage.
 
 ## Related stories
 
+- [Complete the legacy collection with Elytra](../user-stories/us-023-complete-legacy-collection-with-elytra.md)
+
 - [Purchase legacy tools and weapons](../user-stories/us-022-purchase-legacy-tools-and-weapons.md)
 
 - [Inform players and manage participation](../user-stories/us-011-inform-and-manage-participation.md)

design/concepts/role-and-class-model.md

@@ -23,9 +23,11 @@ The Tyrant starts each reign at level zero with one starting unlock choice. Pers
 - Permanent Resistance
 - Permanent Strength
 
-## Legacy armor
+## Legacy rewards
 
-After purchasing all six standard reign unlocks, the Tyrant may spend later choices on one each of four legacy armor slots. These named Netherite rewards are tracked only to prevent duplicate claims during the current reign; the resulting armor remains ordinary transferable equipment and survives role succession in player inventories.
+After purchasing all six standard reign unlocks, the Tyrant may spend one choice each on four armor pieces and five tools/weapons independently, in any order. Once all nine regular rewards have been claimed in the current reign, one additional choice buys a final unbreakable Elytra once per reign. Earlier items need not still be possessed. Elytra is excluded from the explicit prerequisite set.
+
+All ten rewards remain ordinary transferable equipment after succession; only claim eligibility resets. The Elytra carries Minecraft's Unbreakable flag without redundant enchantments, a gold Tyrant/player name, and gray collection lore. Loss or destruction does not permit replacement.
 
 ## Proximity
 
@@ -37,6 +39,8 @@ Vigilante Follower scaling is capped by default at Strength V and Resistance IV,
 
 ## Related stories
 
+- [Complete the legacy collection with Elytra](../user-stories/us-023-complete-legacy-collection-with-elytra.md)
+
 - [Progress and purchase Tyrant unlocks](../user-stories/us-003-progress-and-purchase-unlocks.md)
 - [Assign unlocked classes](../user-stories/us-004-assign-unlocked-classes.md)
 - [Support the Vigilante and Followers](../user-stories/us-008-support-vigilante-and-followers.md)