fix(throwing): clamp DefMaxRange to throw band and guard divisor

Implement Math.Clamp to ensure DefMaxRange stays within [MinThrowRange,
MaxThrowRange], and guard against division by zero if the divisor
becomes zero or negative. Adds four tests: AtStrReq, At140Str,
AboveMaxStr (capping), BelowStrReq (flooring).

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Projects/UOContent.Tests/Tests/Items/Weapons/Throwing/ThrowingTests.cs

@@ -350,6 +350,80 @@ public class ThrowingTests
         }
     }
 
+    // DefMaxRange STR scaling (uses SoulGlaive: StrReq 60, Min 8, Max 11)
+
+    [Fact]
+    public void DefMaxRange_AtStrReq_EqualsMinThrowRange()
+    {
+        var weapon = new SoulGlaive();
+        var attacker = CreateMobile(Map.Felucca, new Point3D(5800, 500, 0));
+        try
+        {
+            attacker.RawStr = 60; // == AosStrengthReq
+            attacker.AddItem(weapon);
+            Assert.Equal(weapon.MinThrowRange, weapon.DefMaxRange); // 8
+        }
+        finally
+        {
+            weapon.Delete();
+            attacker.Delete();
+        }
+    }
+
+    [Fact]
+    public void DefMaxRange_At140Str_EqualsMaxThrowRange()
+    {
+        var weapon = new SoulGlaive();
+        var attacker = CreateMobile(Map.Felucca, new Point3D(5810, 500, 0));
+        try
+        {
+            attacker.RawStr = 140;
+            attacker.AddItem(weapon);
+            Assert.Equal(weapon.MaxThrowRange, weapon.DefMaxRange); // 11
+        }
+        finally
+        {
+            weapon.Delete();
+            attacker.Delete();
+        }
+    }
+
+    [Fact]
+    public void DefMaxRange_AboveMaxStr_IsCappedAtMaxThrowRange()
+    {
+        var weapon = new SoulGlaive();
+        var attacker = CreateMobile(Map.Felucca, new Point3D(5820, 500, 0));
+        try
+        {
+            attacker.RawStr = 200; // uncapped formula would give 13
+            attacker.AddItem(weapon);
+            Assert.Equal(weapon.MaxThrowRange, weapon.DefMaxRange); // 11, not 13
+        }
+        finally
+        {
+            weapon.Delete();
+            attacker.Delete();
+        }
+    }
+
+    [Fact]
+    public void DefMaxRange_BelowStrReq_FlooredAtMinThrowRange()
+    {
+        var weapon = new SoulGlaive();
+        var attacker = CreateMobile(Map.Felucca, new Point3D(5830, 500, 0));
+        try
+        {
+            attacker.RawStr = 10; // below StrReq 60
+            attacker.AddItem(weapon);
+            Assert.Equal(weapon.MinThrowRange, weapon.DefMaxRange); // 8, not 6
+        }
+        finally
+        {
+            weapon.Delete();
+            attacker.Delete();
+        }
+    }
+
     private static PlayerMobile CreateMobile(Map map, Point3D location)
     {
         var mobile = new PlayerMobile(World.NewMobile);

Projects/UOContent/Items/Weapons/Throwing/BaseThrown.cs

@@ -14,17 +14,25 @@ public abstract partial class BaseThrown : BaseRanged
 
     public virtual int MaxThrowRange => MinThrowRange + 3;
 
-    // Dynamic max range scaled by attacker Strength.
+    // Dynamic max range scaled by attacker Strength, clamped to the weapon's throw band.
     // At StrReq the effective range equals MinThrowRange; at 140 Str it reaches MaxThrowRange.
     public override int DefMaxRange
     {
         get
         {
-            var baseRange = MaxThrowRange;
+            if (Parent is not Mobile attacker)
+            {
+                return MaxThrowRange;
+            }
 
-            return Parent is Mobile attacker
-                ? baseRange - 3 + (attacker.Str - AosStrengthReq) / ((140 - AosStrengthReq) / 3)
-                : baseRange;
+            var divisor = (140 - AosStrengthReq) / 3;
+            if (divisor <= 0)
+            {
+                return MaxThrowRange;
+            }
+
+            var scaled = MaxThrowRange - 3 + (attacker.Str - AosStrengthReq) / divisor;
+            return Math.Clamp(scaled, MinThrowRange, MaxThrowRange);
         }
     }