Link support buttons to CrowdRepublic campaign and add VK.

Pricing buy buttons open the live crowdfunding page; hero and footer get VK links; remove unused modal.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/siteContent.test.ts

@@ -14,6 +14,7 @@ import {
   REQUIRED_SECTION_IDS,
   SITE_LINKS,
   UPDATE_FEED_BASE,
+  VK_URL,
 } from "./data/siteContent";
 import {
   SCREENSHOT_SRC,
@@ -69,9 +70,10 @@ describe("siteContent", () => {
     );
   });
 
-  it("wires download anchor and CrowdRepublic crowdfunding url", () => {
+  it("wires download anchor, crowdfunding, and VK urls", () => {
     assert.equal(SITE_LINKS.download, "#platforms");
-    assert.equal(CROWDFUNDING_URL, "https://crowdrepublic.ru/");
+    assert.equal(CROWDFUNDING_URL, "https://crowdrepublic.ru/projects/1073012");
+    assert.equal(VK_URL, "https://vk.com/ttrpgplayer");
   });
 
   it("maps each feature variant to a screenshot asset", () => {