Use the new scheme format in most places

The graphics subsystem still uses the old format as orbital manually
parses the fpath result.

graphics/bgad/src/main.rs

@@ -35,7 +35,7 @@ fn main() {
 
         let mut scheme = BgaScheme {
             bga,
-            display: File::open("input:producer").ok(),
+            display: File::open("/scheme/input/producer").ok(),
         };
 
         scheme.update_size();