fix: split bullet tax credit update into standalone call (v1.4.4)

Foundry v14 rejects actor.update() silently when one field in the payload
has a schema conflict. The combined update (credits + finances nested paths)
was being dropped entirely, so credits never changed.

Fix: two separate actor.update() calls
1. Credit deduction: update("system.details.credits") alone — critical
2. Finances tracking: update(finances paths) — non-critical, caught silently

Added console.log so GMs can confirm credit deductions in browser console:
  Zero Engine | Bullet Tax: Joe credits 500c -> 440c (-60c)

system.json

@@ -2,7 +2,7 @@
   "id": "zero-engine",
   "title": "Zero Engine (SLA Industries)",
   "description": "A basic game system for SLA Industries using the Zero Engine rules.",
-  "version": "1.4.3",
+  "version": "1.4.4",
   "compatibility": {
     "minimum": 13,
     "verified": "14.359"

zero-engine.mjs

@@ -5999,6 +5999,7 @@ function _getAmmoModifiers(weaponData) {
  * Deduct bullet tax from actor credits and update session ammo log.
  * Bullet tax = 2× the base round cost (ammo purchase price + field levy).
  * Called immediately when a weapon fires.
+ * Two separate update() calls so a finances schema issue never blocks the credit deduction.
  */
 async function _applyBulletTax(actor, weaponData, roundsFired) {
   if (!actor || roundsFired <= 0) return 0;
@@ -6010,15 +6011,26 @@ async function _applyBulletTax(actor, weaponData, roundsFired) {
   const currentCredits = Number(actor.system?.details?.credits ?? 0);
   const newCredits = Math.max(0, currentCredits - totalCost);
 
-  // Deduct from credits; track session bullet tax
-  const sessionSpent = Number(actor.system?.finances?.ammoSpentSession ?? 0) + totalCost;
-  const bulletTaxTotal = Number(actor.system?.finances?.expenses?.bulletTax ?? 0) + totalCost;
+  // ── Credit deduction — critical, standalone update ──────────────────────
+  try {
+    await actor.update({ "system.details.credits": newCredits });
+    console.log(`Zero Engine | Bullet Tax: ${actor.name} credits ${currentCredits}¢ → ${newCredits}¢ (−${totalCost}¢)`);
+  } catch (err) {
+    console.error("Zero Engine | Bullet Tax credit deduction failed:", err);
+    return 0;
+  }
 
-  await actor.update({
-    "system.details.credits": newCredits,
-    "system.finances.ammoSpentSession": sessionSpent,
-    "system.finances.expenses.bulletTax": bulletTaxTotal
-  });
+  // ── Finances tracking — non-critical, separate update ───────────────────
+  try {
+    const sessionSpent  = Number(actor.system?.finances?.ammoSpentSession ?? 0) + totalCost;
+    const bulletTaxRun  = Number(actor.system?.finances?.expenses?.bulletTax ?? 0) + totalCost;
+    await actor.update({
+      "system.finances.ammoSpentSession":   sessionSpent,
+      "system.finances.expenses.bulletTax": bulletTaxRun
+    });
+  } catch (_) {
+    // Finances tracking is optional — ignore failures silently
+  }
 
   return totalCost;
 }