add mouse and cursor

code/hal/font8x16.h

@@ -1,5 +1,5 @@
 #pragma once
-// font8x16.h - embedded 8x16 VGA bitmap font, printable ASCII (0x20–0x7E)
+// font8x16.h - embedded 8x16 VGA bitmap font, printable ASCII (0x20-0x7E)
 // 95 glyphs × 16 bytes = 1520 bytes total.
 // Each byte is one scanline; bit 7 = leftmost pixel.
 #include <stdint.h>
@@ -135,7 +135,7 @@ static const uint8_t Font8x16[95 * 16] = {
     0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xFF,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
     // 0x60 '`'
     0x0C,0x18,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
-    // 0x61–0x7A lowercase - condensed to save space, using same shapes as upper offset by 32
+    // 0x61-0x7A lowercase - condensed to save space, using same shapes as upper offset by 32
     // 0x61 'a'
     0x00,0x00,0x00,0x1C,0x30,0x3C,0x33,0x33,0x6E,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
     // 0x62 'b'