EXPcalibur guide

The extra preflight moves one write past the tick boundary.

Chasm: three extra work steps change which page gets writtenChasm: three extra work steps change which page gets writtenZoom in on the end of one 256-step Gate call. Both requests began on valid Scratch.OLD TICK · Scratch pageNEXT TICK · Dispatch61 checkspreflight countWrite finishes before the page changes.62 checkspreflight countCopy survives the pause; write lands after the change.copy saved249WRITE · Scratch255Nothing pendingafter maintenancecopy saved252PAUSE256WRITE258new DispatchThe only input change is 61 → 62. That adds 3 work steps and moves the final write from 255 to 258.Maintenance happens between the paused call and its resumed work; the old and new pages share one slot.

This zoomed timeline shows the last work steps of the two calls. At 61, the write finishes on Scratch at step 255. At 62, the call pauses after step 256; maintenance changes the page to Dispatch before the resumed write at step 258. Spacing between marks is schematic; the step labels are exact.