feat: derive resource visuals from state

docs/BUILD_IN_PUBLIC_PLAN.md

@@ -787,16 +787,19 @@ Completed:
     separate terrain-snapped approach points. Matched captures and a focused
     scenario prove three-batch visual cost, nested discovery, and a forced
     query beyond the first 24 m range without changing the 18-resource state.
+38. `Jajce Resource States 05`: a shared amount-derived presentation contract
+    now gives that berry and tree honest full, low, and depleted states. Real
+    player berry harvests thin fruit and leaves; real NPC wood gathers thin the
+    crown and leave a stump. Low and depleted saves restore the same visuals
+    using only `amount_remaining`, with matched Metal comparison frames.
 
 Next:
 
-1. Give the authored berry/tree resources state-driven low/depleted visuals
-   sourced from their real `ResourceStateRecord` amount. Prove NPC and player
-   extraction plus save/restore rebuild the same presentation without adding
-   visual fields to simulation state.
-2. Apply the workflow to a second forest-edge consumer only after that contract
-   is honest and reusable. Add livestock only with a real identity and
-   interaction contract.
+1. Move the existing `tree_forest_grove_01` and `tree_forest_grove_02` anchors
+   into one bounded forest-edge authoring cluster. Reuse the proven tree amount
+   presentation, preserve both stable IDs, and prove reachable expanding
+   discovery plus depletion/restore without serializing decorative foliage.
+2. Add livestock only with a real identity and interaction contract.
 
 Do not start with GIS data, a full city, a large asset pack, or more NPC
 mechanics. The next proof is a beautiful stage for the systems that already