1.16.1 - a cheaper turn cannot buy back a spent window

1.16.1 - a cheaper turn cannot buy back a spent window

Found by doing the check properly rather than assuming it: walking what Codex
is actually told at 50, 70, 80, 88, 92, 97 and 100 per cent and reading each
instruction. At 100 per cent of a SHARED window the new escape wording had it
say "you are not out of budget and you must not stop as though you were",
because a cheaper effort existed. That is wrong. Effort makes a turn cheaper;
it does not give you a turn in a window that has none. Only a model switch
retires a window outright, so only a model switch now survives to 'gone' - a
spent shared window stops, as it should.

This is the failure the plugin exists to prevent, produced by the plugin, in
reverse: refusing to stop at the one moment stopping is right. Two versions ago
it stopped when it should have switched; without this it would switch when it
should stop.

Effort keeps its place while headroom remains: at 'tight' on a shared window
the line still says carry on and names the cheaper level.

The same walk confirmed the rest of the range reads correctly: roomy through
88 per cent (the wall is 90, and winding down earlier spends a budget that
expires anyway), tight from 92 with the lever named, and a clean stop at 100.

622 tests.

Co-Authored-By: Claude Opus 5 (1M context) noreply@anthropic.com