feat(magic): reorder schools, fix Wu Xing aspect & power formula

- `magicOrder` ArrayField + ▲/▼ buttons for manual reordering
- Magic rolls use school's aspect for Wu Xing, not speciality's element
- Spell power: `difficulty × (aspectValue + freePowerLevels)` (not `successes × diff`)
- Prompt replaces `aspectspeciality`/`bonusmalusspeciality`/`heispend` with `freepowerlevels`

fix: code review issues
- combat.js: guard undefined `ids` in rollInitiative
- rolling.js: catch Dice So Nice promise, normalize French→English kungfu aspects
- weapon/armor/ingredient: `{ min: 0 }` on quantity
- character.js/npc.js: catch rollForActor fire-and-forget promises
- roll-actions.js/tinji-app.js: await ChatMessage.create
- sanhei.js: null guard on properties
- spell.js/kungfu.js: fix aspect name comments (French→English)

css/cde-theme.less

@@ -2253,6 +2253,23 @@ section.npc        .cde-neon-tabs .item.active { color: @cde-supernatural; borde
   &:hover i { color: @cde-text; }
 }
 
+.cde-magic-order-btn {
+  width: 20px;
+  height: 20px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  cursor: pointer;
+  color: @cde-muted;
+  border-radius: 3px;
+  flex-shrink: 0;
+  transition: color 0.12s, background 0.12s;
+
+  i { font-size: 9px; }
+
+  &:hover { color: @cde-text; background: fade(@cde-border-hi, 25%); }
+}
+
 // Specialities list
 .cde-magic-specialities {
   border-top: 1px solid @cde-border;
@@ -3582,6 +3599,13 @@ ol.item-list {
         text-shadow: 0 0 12px var(--rr-accent, transparent);
       }
 
+      .cde-rr-spell-power-formula {
+        font-size: 10px;
+        color: @cde-muted;
+        margin: 2px 0;
+        white-space: nowrap;
+      }
+
       .cde-rr-spell-power-label {
         font-size: 9px;
         font-weight: 700;