feat(notification): announce earned tree unlocks

design/log.md

@@ -2,6 +2,13 @@
 
 ## 2026-08-11
 
+### US-006 unlock announcement checkpoint
+
+- Added configurable, placeholder-aware titles, subtitles, timing, and chat guidance for newly earned species.
+- Progress presentation now removes the completed boss bar before showing the one-time achievement and guidance about sneaking and undo.
+- Verified earned and ordinary progress paths plus the complete build with `./gradlew clean check jar`.
+- US-006 remains in progress until US-007 verifies distinct online messaging for administrative grants.
+
 ### US-005 safe undo completed
 
 - Added one runtime-only latest-felling record per player with original world, coordinates, material, block-data string, and completion time.

design/user-stories/us-006-announce-tree-unlocks.md

@@ -2,7 +2,7 @@
 type: User Story
 title: "US-006: Announce tree unlocks"
 description: Celebrate each newly earned species and explain how to control or undo automatic felling.
-status: backlog
+status: in-progress
 ---
 
 # US-006: Announce tree unlocks
@@ -11,14 +11,14 @@ As a **player**, I want visible and actionable feedback when I unlock a species
 
 ## Acceptance criteria
 
-- [ ] Earning a species unlock displays a configurable on-screen title and subtitle naming the species.
-- [ ] Earning a species unlock also sends a configurable chat message that explains that sneaking prevents automatic felling and names `/treefeller undo`.
-- [ ] Title text, subtitle text, fade-in time, display time, fade-out time, and chat text are configurable.
-- [ ] Messages support the project's chosen Spigot formatting convention and a documented species placeholder.
-- [ ] The boss bar for the newly unlocked species is removed when its unlock announcement is shown.
-- [ ] An earned species produces its unlock announcement exactly once unless an administrator later resets that species and the player earns it again.
+- [x] Earning a species unlock displays a configurable on-screen title and subtitle naming the species.
+- [x] Earning a species unlock also sends a configurable chat message that explains that sneaking prevents automatic felling and names `/treefeller undo`.
+- [x] Title text, subtitle text, fade-in time, display time, fade-out time, and chat text are configurable.
+- [x] Messages support the project's chosen Spigot formatting convention and a documented species placeholder.
+- [x] The boss bar for the newly unlocked species is removed when its unlock announcement is shown.
+- [x] An earned species produces its unlock announcement exactly once unless an administrator later resets that species and the player earns it again.
 - [ ] An administrative grant clearly informs an online target that access was granted but does not falsely present it as a mined-block achievement.
-- [ ] Invalid or cancelled breaks never generate an unlock announcement.
+- [x] Invalid or cancelled breaks never generate an unlock announcement.
 
 ## Related