fix(blockfactory): replace hardcoded slot size with dynamic calculation

js/__tests__/blockfactory.test.js

@@ -102,10 +102,22 @@ describe("SVG Class", () => {
         });
 
         it("should set stroke width", () => {
-            svg.setstrokeWidth(2);
+            svg.setStrokeWidth(2);
             expect(svg._strokeWidth).toBe(2);
         });
 
+        it("should compute slot size dynamically", () => {
+            // With defaults: radius=8, innieY2=4, strokeWidth=1
+            // Expected: 2 * 8 + 4 + 1 = 21
+            expect(svg._slotSize).toBe(21);
+
+            // When strokeWidth changes, slotSize should update
+            svg.setStrokeWidth(2);
+            // New innieY2 = (9 - 2) / 2 = 3.5
+            // Expected: 2 * 8 + 3.5 + 2 = 21.5
+            expect(svg._slotSize).toBe(21.5);
+        });
+
         it("should set colors", () => {
             svg.setColors(["red", "blue"]);
             expect(svg._fill).toBe("red");

js/blockfactory.js

@@ -74,7 +74,10 @@ class SVG {
         this._expandY2 = 0;
         this._clampCount = 1;
         this._clampSlots = [1];
-        this._slotSize = 21; // TODO: Compute this.
+        // Slot size represents the standard height of a basic block.
+        // Derived from: 2 * radius + innieY2 + strokeWidth
+        // This ensures clamp block jaws scale properly with theme changes.
+        this._slotSize = 2 * this._radius + this._innieY2 + this._strokeWidth;
         this._arm = true;
         this._else = false;
         this._draw_inniess = true;
@@ -202,11 +205,14 @@ class SVG {
 
     /**
      * @public
-     * @param {number} stroke_width
+     * @param {number} strokeWidth
      * @returns {void}
      */
-    setstrokeWidth(stroke_width) {
-        this._strokeWidth = stroke_width;
+    setStrokeWidth(strokeWidth) {
+        this._strokeWidth = strokeWidth;
+        // Recalculate dependent values that use strokeWidth
+        this._innieY2 = (9 - this._strokeWidth) / 2;
+        this._slotSize = 2 * this._radius + this._innieY2 + this._strokeWidth;
         this._calc_porch_params();
     }