fix(kon): remove all Ramble references — titles, exports, copy, version bump to v1.0

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/lib/pages/FilesPage.svelte

@@ -129,7 +129,7 @@
     const url = URL.createObjectURL(blob);
     const a = document.createElement("a");
     a.href = url;
-    a.download = `ramble-file-${new Date().toISOString().slice(0, 10)}.${ext}`;
+    a.download = `kon-file-${new Date().toISOString().slice(0, 10)}.${ext}`;
     a.click();
     URL.revokeObjectURL(url);
   }