feat: separate skill value/max (transcendence pool vs level)

- skill.value = spendable transcendence pool (editable select)
- skill.max = max level (locked by default, unlock btn)
- computeRollFormula/computeResults/confront use skill.max
- clamp transcendence spend to skill.value
- resetTranscendence button in Bio&Notes
- v14 compat: duplicate→deepClone, mergeObject→spread, socket fixes
- Dialog v1 removed, DragDrop dedup, await fixes

styles/actor-sheet-steampunk.less

@@ -228,10 +228,17 @@
     .item-name-label-long2,
     .item-name-label-free,
     .item-field-label-short,
+    .item-field-skill-level,
     .item-field-label-medium {
       color: @steam-rust;
     }
 
+    .item-field-skill-level:disabled {
+      background: @steam-parchment-dk;
+      color: fade(@steam-rust, 40%);
+      opacity: 0.85;
+    }
+
     // ---- Roll action links (dice icons) ----
     a[data-action^="roll"],
     a.roll-skill,