Fix Writing Desk GUI and two-block rendering

README.md

@@ -21,6 +21,10 @@ The spent vial returns a glass bottle. Server owners can adjust the symbol-copy
 and link-panel costs in the `writing` section of `rivencraft-server.toml`.
 The Writing Desk can copy a selected written page from its collection tabs.
 The Writing Desk is now craftable from planks, a glass bottle, and a feather.
+It occupies two adjacent blocks, with one shared inventory; loaded paper and
+the selected page appear on its Legacy-inspired model.
+Desks placed before 0.3.6.1 keep their old one-block footprint until broken
+and placed again; leave an adjacent space when replacing one.
 Its four collection tabs, paper input, ink vial input, empty glass-bottle return,
 16-unit ink meter, and inventory persist
 through world saves; breaking it drops stored contents. The desk screen is a