feat(access): manage spawn access grants

design/user-stories/us-004-manage-spawn-access.md

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-004: Grant and remove spawn access"
 description: Let administrators grant custom spawn cooldowns, inspect access, and completely reset a player's access.
-status: backlog
+status: done
 ---
 
 # US-004: Grant and remove spawn access
@@ -11,17 +11,17 @@ As a **server administrator**, I want to grant, inspect, and remove spawn access
 
 ## Acceptance criteria
 
-- [ ] `/spawnadmin grant <player> <duration>` grants immediate `/spawn` access with the supplied cooldown.
-- [ ] Friendly, case-insensitive duration units are accepted, including values such as `30m`, `2h`, and `1d`.
-- [ ] Zero, negative, malformed, or overflowing grant durations are rejected with an explanatory message.
-- [ ] A custom administrative grant overrides the player's boss-based cooldown tier while the grant exists.
-- [ ] Killing qualifying enemies does not replace an active administrative grant's custom cooldown.
-- [ ] `/spawnadmin remove <player>` removes any administrative grant, recorded enemy progress, and active cooldown from the player.
-- [ ] After removal, the player begins with no access and can earn it again by defeating a qualifying enemy.
-- [ ] `/spawnadmin access [page]` lists all players who currently have natural or granted access, including offline players.
-- [ ] Each access-list entry identifies the player, access source, applicable cooldown, progression tier when relevant, and current remaining cooldown.
-- [ ] Administrative player arguments support online players and previously known offline players when they can be resolved safely.
-- [ ] Player state is stored by UUID while retaining the latest known player name for display and lookup.
+- [x] `/spawnadmin grant <player> <duration>` grants immediate `/spawn` access with the supplied cooldown.
+- [x] Friendly, case-insensitive duration units are accepted, including values such as `30m`, `2h`, and `1d`.
+- [x] Zero, negative, malformed, or overflowing grant durations are rejected with an explanatory message.
+- [x] A custom administrative grant overrides the player's boss-based cooldown tier while the grant exists.
+- [x] Killing qualifying enemies does not replace an active administrative grant's custom cooldown.
+- [x] `/spawnadmin remove <player>` removes any administrative grant, recorded enemy progress, and active cooldown from the player.
+- [x] After removal, the player begins with no access and can earn it again by defeating a qualifying enemy.
+- [x] `/spawnadmin access [page]` lists all players who currently have natural or granted access, including offline players.
+- [x] Each access-list entry identifies the player, access source, applicable cooldown, progression tier when relevant, and current remaining cooldown.
+- [x] Administrative player arguments support online players and previously known offline players when they can be resolved safely.
+- [x] Player state is stored by UUID while retaining the latest known player name for display and lookup.
 
 ## Related