The popover bled through (it used the translucent glass surface), was clipped by
the modal card's overflow, and ran off the bottom of the viewport. Make it an
opaque surface, render it through a portal to <body> with fixed positioning so
nothing clips it, and anchor it above the title so it grows upward where there's
room. Add a small hover grace so the pointer can travel title → popover.
- Watched: an explicit toggle in the modal (Mark watched / Watched→unmark) plus
auto-mark when playback reaches the end (within 10s, or on the ended event).
- Compact layout: drop the header bar and the redundant 'Open on YouTube' button
(the embed's own YouTube logo already jumps out); Close moves to the title row,
channel + meta share one line — fits without a scrollbar at higher zoom.
- Card actions reflect status: watched shows a double-check, saved a filled
bookmark, with matching tooltips.
- Description: new GET /api/videos/{id} exposes the already-stored description,
shown in a popover when hovering the modal title (fetched lazily).
Left-clicking a feed card (Ctrl/Cmd/middle still open youtube.com in a new tab)
opens a modal that plays the video in-app via the YouTube IFrame Player API
instead of leaving the app. Using the JS API (not a bare embed) lets us read the
playback position: it's checkpointed per-video in localStorage and on close, and
restored via the 'start' param when the video is reopened. The modal closes via
a header button, the backdrop, or ESC (ESC only while focus is on our page — a
cross-origin iframe owns its own key events).
