Add the V4 baseline (session format 4, cordis 4.0.3): the fold's switched
event families are unchanged, so its entry rides the V3 seam face with a
per-generation settings surface — the `register` face and the retired
`settings.plugin.item` slot are asserted BOTH ways (present through V3,
absent on V4+), and the modal dock probe now pins the sidebar-leading
grid track the measure actually reads instead of one generation's exact
template. New ICON_SEAMS probe: every icon the client renders must exist
in at least one spelling per tag, so a platform rename fails the matrix
instead of the browser. Declare the release in the manifest, fetch its
tag in the release workflow, and document the V4 generation with its
known deltas (deferred: the preferences card's Plugins-page migration,
image-offload accounting).
bowenliang123
390399ff24
