feat(commands): report aura progress

design/log.md

@@ -17,3 +17,4 @@ description: Chronological record of material changes to the Spigot Creeper Fear
 - Completed US-002 with per-tier rank advancement, online aura state, creeper block protection, rank damage multipliers, and rank VI cancellation.
 - Completed US-003 with temporary configurable boss bars, current-tier progress presentation, full-screen rank-up titles, and maximum-rank hiding.
 - Extended US-001 so a self-destructing creeper awards deduplicated progress and normal feedback to every player its explosion hits.
+- Completed US-004 with an asynchronous self-service progress command, ordinary-player permission, completion output, and command metadata.

design/user-stories/us-004-check-personal-progress.md

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-004: Check personal progress"
 description: Let players request their current Creeper Aura rank and tier progress through a command.
-status: backlog
+status: done
 ---
 
 # US-004: Check personal progress
@@ -11,12 +11,12 @@ As a **player**, I want a command that reports my Creeper Aura progress so that
 
 ## Acceptance criteria
 
-- [ ] `/creeperaura progress` reports the player's current locked or ranked state and current-tier progress.
-- [ ] Before rank VI, the response reports the next rank requirement and the number of additional kills needed.
-- [ ] At rank VI, the response clearly reports that progression is complete.
-- [ ] The self-service command is available to ordinary players without administrative permission.
-- [ ] Console use, invalid arguments, and unavailable player data produce clear responses.
-- [ ] Command usage is included in plugin help and command metadata.
+- [x] `/creeperaura progress` reports the player's current locked or ranked state and current-tier progress.
+- [x] Before rank VI, the response reports the next rank requirement and the number of additional kills needed.
+- [x] At rank VI, the response clearly reports that progression is complete.
+- [x] The self-service command is available to ordinary players without administrative permission.
+- [x] Console use, invalid arguments, and unavailable player data produce clear responses.
+- [x] Command usage is included in plugin help and command metadata.
 
 ## Related