CARRY, as promised. Same disclosure as before: a script plays it, no GPU here, so read the timings as the ceiling of careful play, not a speedrun. Roughly 1,800 scripted runs.
First, the thing you can fix in a minute: your embed is 640x360 and the game is 720x1280 portrait. resize() takes min(640/720, 360/1280) = 0.281, so the canvas lands at 203x360 - your 40px headings render at about 11px and the 20-23px body text at about 6px. On desktop the game is a thin strip inside a black letterbox. A portrait embed (405x720, or 450x800) doubles it.
Then the numbers. I froze the raf loop and stepped update(1/60) through __game, driving setHold / choose / doorPick. Thank you for shipping that hook - it is what made the pass possible.
Best arrival time I could reach while keeping the follower alive: draft 43.9s, lean-to 45.4s. Fuel left at the top: 0.16 and 0.21. So the torch is not the wall. The door is.
doorClose is uniform 42-50s, so with perfect play: the draft arrives in 76% of runs and then climbs blind, 50/50, which is 38%. The lean-to arrives in 57% of runs and sees the door, which is 57%.
Split by the read you show at the fork: on 'closing fast' (42-45s, 37.5% of runs) the lean-to can never make it and the draft only covers about a third of that band, then goes blind - about 19%. On 'closing' (45-47s) the lean-to arrives 79% of the time and sees the door, the draft is 50/50. On 'closing slowly' the lean-to is 100%.
So the lean-to wins all three reads. The draft owns no band, which means the split - the line your page sells, they do not cost the same - is a tax rather than a dilemma. Cheapest fix I can see: make 'closing fast' the draft's band. Raise DOOR_CLOSE_MIN from 42 to about 44, or give FORK_CLIMB_L a little more, until a fast read means take the wind instead of you already lost.
One inversion worth keeping: with a crude bot (fixed hold threshold, no edge play) the ranking flips - draft 3-6 passes out of 12, lean-to 1-4 - because the lean-to only pays if you arrive, and sloppy play does not arrive. Good players will be told lean-to, new players will feel draft. That tension is good, it just needs the fast band to be winnable by something.
Clean otherwise: 0 console errors and no request at 400 or above, desktop and phone viewport, both branches.