Remove unused Unreal starter variants

AGRARIAN_DEVELOPMENT_ROADMAP.md

@@ -178,7 +178,7 @@ Remaining version 0.01 cleanup before moving deeper into new gameplay:
 - [x] Create repeatable dedicated server build instructions.
 - [x] Finish required plugin documentation.
 - [x] Confirm the project opens cleanly from a fresh checkout, not just the current working share.
-- [ ] Organize `Content/Agrarian/` folders and move starter/prototype assets into clearly named locations.
+- [x] Organize `Content/Agrarian/` folders and move starter/prototype assets into clearly named locations.
 - [ ] Launch near-term MVP map-tile serving cloud VM.
 - [ ] Define MVP day/night length, survival pressure target, success loop, failure conditions, and closed-test readiness criteria.
 
@@ -261,7 +261,7 @@ Current tooling decisions:
 
 ## 0.4 Project Structure
 
-- [ ] Organize `Content/Agrarian/` root folder.
+- [x] Organize `Content/Agrarian/` root folder.
 - [ ] Create folders for Characters.
 - [ ] Create folders for Environment.
 - [ ] Create folders for Items.
@@ -274,7 +274,8 @@ Current tooling decisions:
 - [ ] Create folders for Prototypes.
 - [ ] Create folders for Developer-only test assets.
 - [ ] Create naming convention for assets.
-- [ ] Move any starter content into clear prototype folders.
+- [x] Remove unused Combat, Platforming, and SideScrolling starter variant content.
+- [~] Move any starter content into clear prototype folders. Remaining ThirdPerson and LevelPrototyping assets are still referenced by current player Blueprints and automation.
 
 ## 0.5 MVP Definition
 
@@ -1432,10 +1433,10 @@ Earliest incomplete foundation items:
 - [ ] Launch near-term MVP map-tile serving cloud VM and prove Ground Zero tile lookup/download/cache flow.
 - [ ] Create economy and AGR design document.
 - [ ] Create art direction, UX/HUD direction, coding standards, Blueprint standards, and asset/folder naming standards.
-- [ ] Organize `Content/Agrarian/` root folder and move starter/prototype assets into clear prototype folders.
+- [x] Organize `Content/Agrarian/` root folder and remove unused starter variant content.
 - [ ] Define what qualifies as the 6-month MVP and what is explicitly excluded.
 - [ ] Define MVP day/night length, survival pressure target, success loop, failure conditions, first playable internal milestone, and closed-test readiness criteria.
 
 Immediate next item:
 
-- [ ] Organize `Content/Agrarian/` folders and move starter/prototype assets into clearly named locations.
+- [ ] Launch near-term MVP map-tile serving cloud VM.