📓 Bookmarks (#8976)

* Add button to controls, respace

* Hook up shadow and mutation

* Add Bookmarks screen

* Build out Bookmarks screen

* Handle removals via shadow

* Use truncateAndInvalidate strategy

* Add empty state

* Add toasts

* Add undo buttons to toasts

* Stage NUX, needs image

* Finesse post controls

* New reply icon

* Use curvier variant of repost icon

* Prevent layout shift with align_start

* Update api pkg

* Swap in new image

* Limit spacing on desktop

* Rm decimals over 10k

* Better optimistic adding/removing

* Add metrics

* Comment

* Remove unused code block

* Remove debug limit

* Fork shadow for web/native

* Tweak alt

* add preventExpansion: true

* Refine hitslop

* Add count to anchor

* Reduce space in compact mode

---------

Co-authored-by: Samuel Newman <mozzius@protonmail.com>

src/state/cache/post-shadow.ts

@@ -25,6 +25,7 @@ export interface PostShadow {
   embed: AppBskyEmbedRecord.View | AppBskyEmbedRecordWithMedia.View | undefined
   pinned: boolean
   optimisticReplyCount: number | undefined
+  bookmarked: boolean | undefined
 }
 
 export const POST_TOMBSTONE = Symbol('PostTombstone')
@@ -92,6 +93,18 @@ function mergeShadow(
     likeCount = Math.max(0, likeCount)
   }
 
+  let bookmarkCount = post.bookmarkCount ?? 0
+  if ('bookmarked' in shadow) {
+    const wasBookmarked = !!post.viewer?.bookmarked
+    const isBookmarked = !!shadow.bookmarked
+    if (wasBookmarked && !isBookmarked) {
+      bookmarkCount--
+    } else if (!wasBookmarked && isBookmarked) {
+      bookmarkCount++
+    }
+    bookmarkCount = Math.max(0, bookmarkCount)
+  }
+
   let repostCount = post.repostCount ?? 0
   if ('repostUri' in shadow) {
     const wasReposted = !!post.viewer?.repost
@@ -127,11 +140,14 @@ function mergeShadow(
     likeCount: likeCount,
     repostCount: repostCount,
     replyCount: replyCount,
+    bookmarkCount: bookmarkCount,
     viewer: {
       ...(post.viewer || {}),
       like: 'likeUri' in shadow ? shadow.likeUri : post.viewer?.like,
       repost: 'repostUri' in shadow ? shadow.repostUri : post.viewer?.repost,
       pinned: 'pinned' in shadow ? shadow.pinned : post.viewer?.pinned,
+      bookmarked:
+        'bookmarked' in shadow ? shadow.bookmarked : post.viewer?.bookmarked,
     },
   })
 }