added changeset and unit test

.changeset/public-things-stare.md

@@ -0,0 +1,5 @@
+---
+'mermaid': major
+---
+
+Added support for the click directive in stateDiagram syntax

packages/mermaid/src/diagrams/state/stateDiagram-v2.spec.js

@@ -442,5 +442,22 @@ describe('state diagram V2, ', function () {
       const currentDirection = stateDb.getDirection();
       expect(currentDirection).toEqual('LR');
     });
+    it('should parse and store clickable link with tooltip using the click directive', () => {
+      const diagram = `
+        stateDiagram-v2
+        [*] --> StateA
+        click StateA "https://example.com" "Go to Example"
+      `;
+
+      parser.parse(diagram);
+
+      const links = stateDb.getLinks();
+
+      expect(links.has('StateA')).toBe(true);
+
+      const linkInfo = links.get('StateA');
+      expect(linkInfo.url).toBe('https://example.com');
+      expect(linkInfo.tooltip).toBe('Go to Example');
+    });
   });
 });