The car offers Continue, Short and New

Browsing by show is the wrong shape for driving: it asks you to remember what
you were doing and then find it, which was behind "discovery sucks" and
"scrolling the lists in the car is bad experience". Three lists sit above the
shows now and answer the question actually being asked at a traffic light --
what was I in the middle of, what fits this drive, what is new.

All three come from data the app already keeps. No new column, no migration.

Short cuts off at 20 minutes, which is Peter's call rather than a guess: it
catches the daily news and the shorter curiosity episodes and leaves out
conversation and deep dives. It reads COALESCE(actualDurationMs, durationMs)
-- playbackDurationMs in SQL -- because a feed declaring 22:05 for a file that
runs 28:18 would otherwise put a half-hour episode in a twenty-minute list.
An episode of unknown length is left out; unknown is not short.

Continue is the one list that does not exclude queued episodes, because the
episode you are in the middle of is normally the head of the queue and
excluding it would empty the list in the ordinary case. Short and New exclude
anything started, so finishing something is never buried under a new arrival.

A list holding nothing is left off the root entirely rather than opened and
found empty -- the same dead end the phone's library dims a show for.

The queries are their own narrow CarListDao rather than three more methods on
EpisodeDao, which detekt was right to call already the widest in the app: they
are read-only, they all cross every show rather than belonging to one, and
they exist for a single surface. Not on UiGraph, since no view model wants them.

Verified on the emulator: 9 CarListsDbTest cases against the real tables, and
MediaBrowseTest walks the real session protocol to the Continue node and finds
the part-heard episode in it.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018AwnALZL6bD4VBtATDVv3B

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