session-tile-owner-route.test.ts asserted against the TEXT of
session-tile.tsx, so it passed on a broken implementation whose call site
merely looked right, and failed on this refactor, which changed nothing the
tile actually does. AGENTS.md bans the pattern outright.
Extracted the ladder as tileOwnerRoute() and replaced the three regex
assertions with six that call it: tile route wins, row falls back, hint
falls back, targetProfile carries through, a bare profile narrows away, an
untagged session stays ambient. 12s of source-matching becomes 1.1s of
behavior.
Brooklyn Nicholson
2659c917c1