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);
   }

src/lib/pages/SettingsPage.svelte

@@ -627,7 +627,7 @@
           {/each}
         </div>
 
-        <p class="text-[11px] text-text-tertiary mt-5">Ramble v0.2 · Powered by whisper.cpp · Built by CORBEL Ltd</p>
+        <p class="text-[11px] text-text-tertiary mt-5">Kon v1.0 · Powered by whisper.cpp · Built by CORBEL Ltd</p>
       </div>
     </Card>
   </div>