docs: move task list to TODO.md and keep ROADMAP.md as plan

Split the former ROADMAP.md checklists into TODO.md, which now holds
all actionable work and progress marks. ROADMAP.md keeps milestone
goals, scope, and release gates as prose with no checkboxes.

Update AGENTS.md, Docs/, Geo/README.md, MEMORY.md, and README.md to
point to the new file roles.

Docs/setup.md

@@ -1,6 +1,6 @@
 # Setup
 
-Ordered procedure for bringing the workstation and the project to a buildable state. Status markers follow `ROADMAP.md`:
+Ordered procedure for bringing the workstation and the project to a buildable state. Status markers follow `TODO.md`:
 
 - `[x]` done and verified
 - `[-]` started, not finished
@@ -21,7 +21,7 @@ Anything marked **human step** needs credentials, licence acceptance, or a decis
 | 6. Content pipeline | in progress — blockout, terrain, street, hero façade and the walkable `DemoMap` exist; façades and materials are planned patches (`0.1.4`) |
 | 5. Repository | procedure documented; a fresh checkout has not yet been exercised end to end |
 
-Next: `0.1.0` gameplay (attribution display, lighting, crossing) and the El Capitan Theatre, then the planned patches. Current board is [ROADMAP.md](../ROADMAP.md).
+Next: `0.1.0` gameplay (attribution display, lighting, crossing) and the El Capitan Theatre, then the planned patches. Current task list is [TODO.md](../TODO.md); version direction is in [ROADMAP.md](../ROADMAP.md).
 
 ## 1. System