horizontal padding fix

test/svg-utils.test.js

@@ -29,21 +29,19 @@ describe('svg-utils', () => {
   describe('estimateTextWidth', () => {
     it('should estimate width based on text length and font size', () => {
       const width = estimateTextWidth('Hello', 14);
-      // formula: text.length * fontSize * 0.65 + fontSize * 0.8
-      expect(width).toBe(5 * 14 * 0.65 + 14 * 0.8); // 56.7
+      // formula: text.length * fontSize * 0.7
+      expect(width).toBe(5 * 14 * 0.7); // 49
     });
 
-    it('should include padding for empty string', () => {
-      // Even empty strings get the base padding
-      expect(estimateTextWidth('', 14)).toBe(14 * 0.8); // 11.2
+    it('should return 0 for empty string', () => {
+      expect(estimateTextWidth('', 14)).toBe(0);
     });
 
     it('should scale with font size', () => {
       const w1 = estimateTextWidth('test', 10);
       const w2 = estimateTextWidth('test', 20);
-      // w1 = 4*10*0.65 + 10*0.8 = 34
-      // w2 = 4*20*0.65 + 20*0.8 = 68
-      expect(w2).toBe(68);
+      expect(w1).toBe(4 * 10 * 0.7); // 28
+      expect(w2).toBe(4 * 20 * 0.7); // 56
     });
   });
 });