- Narrow the title hover target to the actual text, not the whole row.
- Linkify descriptions: timestamps (mm:ss / hh:mm:ss) seek the player; emails
become mailto:; hashtags link to YouTube's hashtag feed; other URLs open in a
new tab. Blank lines are stripped so the popover isn't mostly whitespace.
- YouTube links play in the inline player: a link to the current video seeks
(honoring t=), a link to another video navigates the player to it, with a Back
button to the original. While on a linked video the title/author come from the
player and its views/date/duration + a clickable channel come from the detail
endpoint, which falls back to the YouTube API (videos.list, attributed to the
user) for videos not in our DB.