A kept episode's row says On this device (#413)

Only the keep button in the files pane said an episode was kept, so finding
what was on the device meant opening items one by one. The row's line says
it, and keeping or removing one redraws the rows whose state changed.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01RqkrVDqdiQEMWAkNGQ2tYA

web/app.css

@@ -1072,6 +1072,8 @@ body.playing .eq i:nth-child(3){animation-delay:-.6s}
 .ep.read .t{color:var(--dim);font-weight:500}
 .ep .line{display:flex;gap:9px;align-items:center;flex-wrap:wrap;color:var(--faint);font-size:11.5px}
 .ep .line:empty{display:none}
+.ep .kept{display:inline-flex;align-items:center;gap:4px;color:var(--dim)}
+.ep .kept svg{width:1em;height:1em}
 .ep .fd,.ep .size,.ep .date{color:var(--dim);font-size:12.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
 .ep .file{display:flex;gap:6px;align-items:center;position:relative;color:var(--faint);font-size:11.5px}
 /* Under the icon, not beside it or on a line of its own: taking a line, it lifted the icon of