Deliberately trimmed vs. app.js's `populateOverflowMenu`, which held
dashboard-link/rebuild/new-session/logout/model-picker/effort-picker
all in one flat list — the design guide's own named junk-drawer
anti-example. Model/effort already moved to StatusChips' own
Badge+Dropdown controls; new-session/logout now live as TermInput
slash commands (typed, with their own two-step confirm). What's left —
rebuild + a dashboard back-link — is genuinely menu-shaped (rare, not
tied to any other visible control), so it's still a `⋯` menu, just a
much shorter one.
Reuses `@hive/shared`'s Badge+Dropdown pair (same anchored-popover
shape as StatusChips' model/effort pickers), not a bespoke popover.
Rebuild's confirm is the same "select once to arm, select again to
fire" idea as the slash commands, adapted to a menu click. New
`lib/rebuildAction.ts` — same cross-origin-needs-a-real-form-submit
reasoning as pauseAction.ts (hive-c0re's `/api/rebuild/{name}` has no
CORS header either).
Found + fixed a real layout gap in the shared Dropdown while
screenshot-verifying: its CSS anchors left-edge-to-left-edge, correct
for a picker with room to its right, but the overflow trigger is the
header's right-most element, so the menu ran off-screen. Fixed with a
scoped override in this component's own CSS (`.header-overflow-anchor
.ui-dropdown { left: auto; right: 0; }`) rather than changing the
shared default, which is still correct for every other caller.