docs: mark quicksave phase complete

docs/LEARNING_ROADMAP.md

@@ -641,17 +641,18 @@ Completed after the architecture gate:
 - deterministic structured economic events for extraction, deposit,
   withdrawal, and consumption;
 - persisted event identity/history and a visible carried-food prop derived
-  from NPC inventory.
+  from NPC inventory;
+- a validated local quicksave with bounded file size, guarded slot names,
+  atomic replacement recovery, F5/F9 controls, and active-visual rebuilding.
 
 The practical next sequence is:
 
-1. Add save-slot persistence, validation, and explicit migration fixtures
-   before schedules
-   or social state expand.
-2. Resume Terrain3D sculpting, runtime integration, and the simulation-garden
+1. Resume Terrain3D sculpting, runtime integration, and the simulation-garden
    beauty pass.
-3. Add stylized character and profession readability plus the reason
+2. Add stylized character and profession readability plus the reason
    inspector.
+3. Expand persistence only when schedules, player state, or a real save menu
+   creates a concrete requirement.
 
 This order strengthens the simulation while regularly producing visible
 progress suitable for public development updates.