The wait for the node table now ends with the selection's signal. A
local read resolves and projects in bounded steps with a turn of the
event loop between them, and the inspector carries aria-busy while it
loads. A budget test covers maximal 2 MiB graphs and checks the stepped
read is byte-identical to one synchronous build. The D117 wrap rule now
targets only the summary button, and TESTING.md scopes the restart line
to PRs L1 and L2.