feat(ios): improve share preview (#15538)

#### PR Dependency Tree

* **PR #15538** 👈

This tree was auto-generated by
[Charcoal](https://github.com/danerwilliams/charcoal)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Added rich link previews to mobile and iOS sharing, including images,
metadata, transcripts, and selected text.
* Share imports can now create structured content blocks, embeds,
bookmarks, and transcript callouts.
* Added workspace-aware preview handling for cloud, self-hosted, and
signed-out modes.
* **Accessibility**
* Improved collapse/expand controls with semantic buttons and ARIA
relationships.
* **Bug Fixes**
  * Enhanced URL and error sanitization in server logs.
* Improved link-preview CORS support, validation, and request handling.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

packages/frontend/apps/electron/src/main/ui/handlers.ts

@@ -1,12 +1,10 @@
 import { app, clipboard, nativeImage, nativeTheme } from 'electron';
-import { getLinkPreview } from 'link-preview-js';
 import { map, shareReplay } from 'rxjs';
 
 import { isMacOS } from '../../shared/utils';
 import { persistentConfig } from '../config-storage/persist';
 import { logger } from '../logger';
 import { openExternalSafely } from '../security/open-external';
-import { resolveAndValidateUrlForPreview } from '../security/url-safety';
 import type { WorkbenchViewMeta } from '../shared-state-schema';
 import { MenubarStateKey, MenubarStateSchema } from '../shared-state-schema';
 import { globalStateStorage } from '../shared-storage/storage';
@@ -39,13 +37,6 @@ import { getOrCreateCustomThemeWindow } from '../windows-manager/custom-theme-wi
 import { getChallengeResponse } from './challenge';
 import { uiSubjects } from './subject';
 
-const EMPTY_OBJECT = Object.freeze({
-  title: undefined,
-  description: undefined,
-  icon: undefined,
-  image: undefined,
-});
-
 const TraySettingsState = {
   $: globalStateStorage.watch<MenubarStateSchema>(MenubarStateKey).pipe(
     map(v => MenubarStateSchema.parse(v ?? {})),
@@ -134,83 +125,6 @@ export const uiHandlers = {
       logger.error('handleOpenMainApp', err);
     }
   },
-  getBookmarkDataByLink: async (_, link: string) => {
-    try {
-      // Basic validation up-front to prevent SSRF (including redirects).
-      await resolveAndValidateUrlForPreview(link);
-    } catch {
-      return EMPTY_OBJECT;
-    }
-
-    if (
-      (link.startsWith('https://x.com/') ||
-        link.startsWith('https://www.x.com/') ||
-        link.startsWith('https://www.twitter.com/') ||
-        link.startsWith('https://twitter.com/')) &&
-      link.includes('/status/')
-    ) {
-      // use api.fxtwitter.com
-      const statusId = /\/status\/(\d+)/.exec(link)?.[1];
-      if (!statusId) return EMPTY_OBJECT;
-      link = `https://api.fxtwitter.com/status/${statusId}`;
-      try {
-        const { tweet } = (await fetch(link).then(res => res.json())) as any;
-        return {
-          title: tweet.author.name,
-          icon: tweet.author.avatar_url,
-          description: tweet.text,
-          image: tweet.media?.photos[0].url || tweet.author.banner_url,
-        };
-      } catch (err) {
-        logger.error('getBookmarkDataByLink', err);
-        return {
-          title: undefined,
-          description: undefined,
-          icon: undefined,
-          image: undefined,
-        };
-      }
-    } else {
-      const previewData = (await getLinkPreview(link, {
-        timeout: 6000,
-        headers: {
-          'User-Agent':
-            'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0 Safari/537.36 Edg/120.0.0',
-        },
-        followRedirects: 'manual',
-        handleRedirects: (_baseUrl: string, forwardedUrl: string) => {
-          try {
-            // Only allow http(s) redirects and re-validate before following.
-            const u = new URL(forwardedUrl);
-            return u.protocol === 'http:' || u.protocol === 'https:';
-          } catch {
-            return false;
-          }
-        },
-        resolveDNSHost: async (url: string) => {
-          const { address } = await resolveAndValidateUrlForPreview(url);
-          return address;
-        },
-      }).catch(() => {
-        return {
-          title: '',
-          siteName: '',
-          description: '',
-          images: [],
-          videos: [],
-          contentType: `text/html`,
-          favicons: [],
-        };
-      })) as any;
-
-      return {
-        title: previewData.title,
-        description: previewData.description,
-        icon: previewData.favicons[0],
-        image: previewData.images[0],
-      };
-    }
-  },
   openExternal(_, url: string) {
     return openExternalSafely(url);
   },