feat: ship a web app (#218)

* feat(orion): add endpoint for link metadata

* refactor: cleanup comments

* wip: plumbing for building a web app

* setup deployment materials for web app

* fix(web): favicon

js/desktop/src/features/attachments/attachment-lightbox.tsx

@@ -12,6 +12,7 @@ import {
 import { useDownloadUrl } from "@/hooks/use-download-url";
 import { Button } from "@/components/ui/button";
 import { useSuspendPlayback } from "@/hooks/use-suspend-playback";
+import { platform } from "@/lib/platform";
 
 export interface AttachmentItem {
   id: string;
@@ -95,7 +96,7 @@ export function AttachmentLightbox({
 
   const handleDownload = () => {
     if (!current || !url || current.source.kind !== "remote") return;
-    window.electronAttachment.download(url, current.filename);
+    platform.attachment.download(url, current.filename);
   };
 
   const handleRemove = () => {