fix: use CRLF line endings in DEFAULT.CFG to match Doom's fgets parser

The dos.zone DEFAULT.CFG uses \r\n (DOS/CRLF) line endings.
Our injected config used \n (LF/Unix). While fgets() reads
both, the \r character stays in the buffer and the Doom
parser may behave differently when it's absent. Matching
the exact byte-for-byte format that works on dos.zone.

src/main/java/com/dostalgia/UploadResource.java

@@ -329,40 +329,43 @@ public class UploadResource {
      *   Mouse enabled for looking
      */
     private byte[] buildDoomDefaultCfg() {
+        // Use CRLF (\r\n) line endings — Doom's config parser uses fgets()
+        // which includes \r in the buffer on DOS. Missing \r can cause parsing issues.
+        String CRLF = "\r\n";
         String cfg = ""
-            + "mouse_sensitivity\t\t5\n"
+            + "mouse_sensitivity\t\t5" + CRLF
-            + "sfx_volume\t\t8\n"
+            + "sfx_volume\t\t8" + CRLF
-            + "music_volume\t\t8\n"
+            + "music_volume\t\t8" + CRLF
-            + "show_messages\t\t1\n"
+            + "show_messages\t\t1" + CRLF
-            + "key_right\t\t77\n"        // Right arrow — turn right
+            + "key_right\t\t77" + CRLF        // Right arrow — turn right
-            + "key_left\t\t75\n"         // Left arrow  — turn left
+            + "key_left\t\t75" + CRLF         // Left arrow  — turn left
-            + "key_up\t\t17\n"           // W — forward
+            + "key_up\t\t17" + CRLF           // W — forward
-            + "key_down\t\t31\n"         // S — backward
+            + "key_down\t\t31" + CRLF         // S — backward
-            + "key_strafeleft\t\t30\n"   // A — strafe left
+            + "key_strafeleft\t\t30" + CRLF   // A — strafe left
-            + "key_straferight\t\t32\n"  // D — strafe right
+            + "key_straferight\t\t32" + CRLF  // D — strafe right
-            + "key_fire\t\t29\n"         // Ctrl — fire
+            + "key_fire\t\t29" + CRLF         // Ctrl — fire
-            + "key_use\t\t57\n"          // Space — use/open
+            + "key_use\t\t57" + CRLF          // Space — use/open
-            + "key_strafe\t\t56\n"       // Alt — strafe (hold)
+            + "key_strafe\t\t56" + CRLF       // Alt — strafe (hold)
-            + "key_speed\t\t54\n"        // Shift — run
+            + "key_speed\t\t54" + CRLF        // Shift — run
-            + "use_mouse\t\t1\n"
+            + "use_mouse\t\t1" + CRLF
-            + "mouseb_fire\t\t0\n"
+            + "mouseb_fire\t\t0" + CRLF
-            + "mouseb_strafe\t\t1\n"
+            + "mouseb_strafe\t\t1" + CRLF
-            + "mouseb_forward\t\t2\n"
+            + "mouseb_forward\t\t2" + CRLF
-            + "use_joystick\t\t0\n"
+            + "use_joystick\t\t0" + CRLF
-            + "joyb_fire\t\t0\n"
+            + "joyb_fire\t\t0" + CRLF
-            + "joyb_strafe\t\t1\n"
+            + "joyb_strafe\t\t1" + CRLF
-            + "joyb_use\t\t3\n"
+            + "joyb_use\t\t3" + CRLF
-            + "joyb_speed\t\t2\n"
+            + "joyb_speed\t\t2" + CRLF
-            + "screenblocks\t\t10\n"
+            + "screenblocks\t\t10" + CRLF
-            + "detaillevel\t\t0\n"
+            + "detaillevel\t\t0" + CRLF
-            + "showmessages\t\t1\n"
+            + "showmessages\t\t1" + CRLF
-            + "comport\t\t1\n"
+            + "comport\t\t1" + CRLF
-            + "snd_channels\t\t3\n"
+            + "snd_channels\t\t3" + CRLF
-            + "snd_musicdevice\t\t3\n"
+            + "snd_musicdevice\t\t3" + CRLF
-            + "snd_sfxdevice\t\t3\n"
+            + "snd_sfxdevice\t\t3" + CRLF
-            + "snd_sbport\t\t544\n"
+            + "snd_sbport\t\t544" + CRLF
-            + "snd_sbirq\t\t7\n"
+            + "snd_sbirq\t\t7" + CRLF
-            + "snd_sbdma\t\t1\n";
+            + "snd_sbdma\t\t1" + CRLF;
         return cfg.getBytes(java.nio.charset.StandardCharsets.US_ASCII);
     }