GET /api/jobq/graph gains a states query param (comma-separated
hive_jobq::State names): narrows the served root groups to the named
states, keeping a group whole (filtering by a root's own state, which
is already its subtree's rolled-up answer). Absent, empty, or fully
unrecognised is the identity filter, matching prior behaviour.
hive-jobq-graph.js gains a row of per-state checkboxes above the tree,
re-fetching the endpoint with the selection on toggle. Default
selection hides Done and Skipped.
Server-side filtering (not client-side hiding) so hive-jobq-graph-update's
node list, and everything downstream of it in builds.js (count pill,
live-log panel), only ever sees what's actually shown.
1e13b88c8c