fix: correct DSN dice skins + UI tweaks (v1.3.9)

- DSN: register ze-stress-dice system separately so normal/stress d6 presets dont overwrite each other
- DSN: use term.options.appearance.system to force correct preset on every roll - bypasses user saved DSN system preference
- Remove v1.3.8 flag-patching ready hook (no longer needed)
- UI: dice icon on attribute header enlarged (13px to 20px) with glow
- UI: attr-btn smaller (24px to 16px), skill +/- smaller (20px to 14px)
- UI: clicking attribute name, skill name, or weapon name now triggers roll

styles/zero-engine.css

@@ -737,13 +737,13 @@
 }
 
 .zero-engine .attr-btn {
-  width: 24px;
-  height: 24px;
-  background: rgba(255, 102, 0, 0.2);
-  border: 2px solid #ff6600;
-  border-radius: 3px;
+  width: 16px;
+  height: 16px;
+  background: rgba(255, 102, 0, 0.15);
+  border: 1px solid #ff6600;
+  border-radius: 2px;
   color: #ff6600;
-  font-size: 16px;
+  font-size: 11px;
   font-weight: bold;
   cursor: pointer;
   transition: all 0.2s;
@@ -841,13 +841,13 @@
 
 .zero-engine .skill-increment,
 .zero-engine .skill-decrement {
-  width: 20px;
-  height: 20px;
-  background: rgba(255, 102, 0, 0.2);
+  width: 14px;
+  height: 14px;
+  background: rgba(255, 102, 0, 0.15);
   border: 1px solid #ff6600;
-  border-radius: 3px;
+  border-radius: 2px;
   color: #ff6600;
-  font-size: 14px;
+  font-size: 10px;
   font-weight: bold;
   cursor: pointer;
   transition: all 0.2s;
@@ -2609,8 +2609,9 @@
 
 .zero-engine .ze-attr-roll-btn i {
   color: #ff6600;
-  font-size: 13px;
-  opacity: 0.7;
+  font-size: 20px;
+  opacity: 0.85;
+  filter: drop-shadow(0 0 4px rgba(255, 102, 0, 0.5));
 }
 
 .zero-engine .ze-attr-roll-btn:hover .ze-attr-name {