feat: changelog 16th jul (#6750)

packages/blog/changelog.ts

@@ -10,6 +10,14 @@ export type VersionEntry = {
 }
 
 const VERSIONS: VersionEntry[] = [
+	{
+		date: `2026-07-16T19:36:45+00:00`,
+		product: 'app',
+		version: '0.15.12',
+		body: `## Fixed
+- Fixed issue with some modpacks failing to install due to file mismatches.
+- Fixed hardcore worlds generated in 26.1+ not being recognised as hardcore in the Jump back in and Worlds tab.`,
+	},
 	{
 		date: `2026-07-14T22:14:08+00:00`,
 		product: 'app',