Post UI updates (Profile Preview on mobile) (#990)

* Update postmeta to put the timestamp on the right side on mobile

* Drop the two-line PostMeta mode

* Add ProfilePreview modal

* Tune PostMeta to give the best behavior possible for a given platform

* Remove old showFollowBtn attributes

* Fix style issue

* Switch the follow button in the profile header to use the inverted color for consistency with the rest of the app

* Fix lint

* Fix darkmode

* Tune the profile preview footer

* Better analytics choice

src/view/com/posts/FeedItem.tsx

@@ -21,7 +21,7 @@ import {ImageHider} from '../util/moderation/ImageHider'
 import {RichText} from '../util/text/RichText'
 import {PostSandboxWarning} from '../util/PostSandboxWarning'
 import * as Toast from '../util/Toast'
-import {UserAvatar} from '../util/UserAvatar'
+import {PreviewableUserAvatar} from '../util/UserAvatar'
 import {s} from 'lib/styles'
 import {useStores} from 'state/index'
 import {usePalette} from 'lib/hooks/usePalette'
@@ -33,14 +33,12 @@ export const FeedItem = observer(function ({
   item,
   isThreadChild,
   isThreadParent,
-  showFollowBtn,
   ignoreMuteFor,
 }: {
   item: PostsFeedItemModel
   isThreadChild?: boolean
   isThreadParent?: boolean
   showReplyLine?: boolean
-  showFollowBtn?: boolean
   ignoreMuteFor?: string
 }) {
   const store = useStores()
@@ -55,7 +53,6 @@ export const FeedItem = observer(function ({
     return `/profile/${item.post.author.handle}/post/${urip.rkey}`
   }, [item.post.uri, item.post.author.handle])
   const itemTitle = `Post by ${item.post.author.handle}`
-  const authorHref = `/profile/${item.post.author.handle}`
   const replyAuthorDid = useMemo(() => {
     if (!record?.reply) {
       return ''
@@ -214,13 +211,13 @@ export const FeedItem = observer(function ({
       <PostSandboxWarning />
       <View style={styles.layout}>
         <View style={styles.layoutAvi}>
-          <Link href={authorHref} title={item.post.author.handle} asAnchor>
-            <UserAvatar
-              size={52}
-              avatar={item.post.author.avatar}
-              moderation={item.moderation.avatar}
-            />
-          </Link>
+          <PreviewableUserAvatar
+            size={52}
+            did={item.post.author.did}
+            handle={item.post.author.handle}
+            avatar={item.post.author.avatar}
+            moderation={item.moderation.avatar}
+          />
         </View>
         <View style={styles.layoutContent}>
           <PostMeta
@@ -229,8 +226,6 @@ export const FeedItem = observer(function ({
             authorHasWarning={!!item.post.author.labels?.length}
             timestamp={item.post.indexedAt}
             postHref={itemHref}
-            did={item.post.author.did}
-            showFollowBtn={showFollowBtn}
           />
           {!isThreadChild && replyAuthorDid !== '' && (
             <View style={[s.flexRow, s.mb2, s.alignCenter]}>
@@ -357,9 +352,9 @@ const styles = StyleSheet.create({
   layout: {
     flexDirection: 'row',
     marginTop: 1,
+    gap: 10,
   },
   layoutAvi: {
-    width: 70,
     paddingLeft: 8,
   },
   layoutContent: {