A floating window remembers its position per id, and only the DRAG handler
clamped. So a window moved to the right of a wide screen and reopened on a
narrow one opened entirely off the viewport: no titlebar on screen to grab,
nothing to drag back, and the position remembered -- unrecoverable without
clearing localStorage by hand. Reproduced at x=1400 in an 800px viewport.
The clamp lives in apply() now, so every path goes through it: opening,
restoring a remembered box, coming back from maximised, and the viewport
shrinking under an open window. Also guarded for a viewport narrower than
the grabbable strip, where the old bound went negative and pushed the window
further off rather than back on.
jsdom cannot see any of this -- getBoundingClientRect is zeros there, so a
window off the right edge measures identically to one in the middle. The
three tests are Playwright, and removing the clamp fails two of them.
And POST /api/pipeline could not accept an empty pipeline: `slots or
default()` resurrects the built-ins, because an empty list is falsy. A client
that removed every slot got them handed back. Absent means "use the default";
empty means "there is nothing", and only one of those is a fallback.
One of the tests I first wrote for this asserted len(x) < len(y) + 1, which
is true of almost anything. It counts the pipeline at every step now and
fails if it ever grows.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
