Live topology edits fired one mutation per canvas action. That coupled
each edit to an immediate enqueue+apply, which (post-serialization)
raced the SSE refetch and duplicated optimistic placeholders, and gave
the user no chance to assemble a coherent changeset (add a net AND
bridge it) before any of it landed.
Live edits now STAGE: each editor primitive records its op and returns
immediately; the optimistic placeholders callers already draw are the
staged preview. The action button reads UPDATE (n) when live (DEPLOY
when pending) and flushes the batch through the slice-1 submit queue —
sequential, version-cursored, each awaited to a terminal state, stopping
loudly on the first failure with the unapplied remainder kept for retry.
REFRESH becomes DISCARD (n) to drop the batch. SSE refetch is paused
during a commit so per-mutation applied events don't wipe still-staged
placeholders mid-batch; one refetch reconciles at the end.
Also fix _dropArchetype, which bailed without an optimistic node on the
staged path, leaving a decky added to an uncommitted LAN invisible until
UPDATE.
anti
4f141c1a54