fix: Add specific justification for 200 division limit

- Clarify that 200 division limit prevents UI performance issues
- Each division creates DOM elements in temperament widget
- Prevents excessive DOM elements and slow rendering
- Improves error messages with specific range requirements

Addresses Walter Bender's feedback about vague limits

Author: Developer

js/utils/musicutils.js

@@ -2354,8 +2354,10 @@ const addTemperamentToDictionary = (entryName, entryValue) => {
  * @returns {Object} Temperament object with interval ratios
  */
 const generateEqualTemperament = divisions => {
+    // Limit to 200 divisions to prevent UI performance issues
+    // Each division creates DOM elements in the temperament widget
     if (divisions < 1 || divisions > 200) {
-        throw new Error("Invalid number of divisions");
+        throw new Error("Invalid number of divisions: must be between 1 and 200");
     }
 
     const temperament = {

js/widgets/temperament.js

@@ -899,9 +899,10 @@ function TemperamentWidget() {
             pitchNumber2 = Number(docById("octaveOut").value);
             divisions = Number(docById("divisions").value);
 
-            // Validate input to prevent performance issues
+            // Validate input to prevent UI performance issues
+            // Limit to 200 divisions to prevent excessive DOM elements and slow rendering
             if (isNaN(divisions) || divisions < 1 || divisions > 200) {
-                throw new Error("Invalid divisions");
+                throw new Error("Invalid divisions: must be between 1 and 200");
             }
 
             this.tempRatios = this.ratios.slice();