Render destination snapshots with Ponder

docs/PORTING.md

@@ -51,7 +51,7 @@ the symbol grammar is introduced.
 - [x] Book-screen foundation with server-authoritative naming, binding, and
   explicit link activation.
 - [x] Ponder dependency and isolated destination-preview level boundary.
-- [ ] Server-provided destination snapshots rendered as rotating Ponder scenes.
+- [x] Server-provided destination snapshots rendered as rotating Ponder scenes.
 - [x] Book Stand floating names synchronized from the stored book stack.
 - [x] Open the stored book screen from a Book Stand with server-validated linking.
 - [ ] Automated in-game tests for binding, persistence, and travel.
@@ -110,6 +110,10 @@ revalidates the stand position, interaction distance, stored item, and target.
 Version 0.1.12 replaces the Linking Book screen's convenience text draws with
 explicit no-shadow rendering for clearer dark ink on the parchment texture.
 
+Version 0.1.13 requests a bounded, server-validated 9-by-7-by-9 block snapshot
+from the held book or nearby Book Stand and renders it as a clipped, rotating
+Ponder world section on the Linking Book's left page.
+
 The preview code is separated behind a renderer interface and uses an isolated
 Ponder level. The first iteration supplies the animated loading boundary; the
 next iteration will add server-authoritative snapshot transport and populate