Switch to the Dinowyde font with DINOBYTE for missing glyphs

Unicode glyph lookup instead of CP437 codes, rope and double-strand
frames with clean title ends, progress bars in eighth blocks.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/menu.rs

@@ -1,6 +1,6 @@
 // Menus: title screen, pause menu, savegame list (server) and the settings dialog
 // (tabs, values, key bindings).
-// Drawn as CP437 windows on top of the (paused) game world.
+// Drawn as text-mode windows on top of the (paused) game world.
 
 use crate::campaign::{missions, Progress};
 use crate::campaign_doc::CampaignDoc;