Nest runs class and method guards together, so a class gate naming only
the view key silently required view AND action. Staff granted just an
action were denied before their key was checked. Each class gate now
names every key its routes use, and FleetView accepts an array so the
fleet controllers keep their coarse fallback.
Drops the one-off grant mapping SQL with it: already applied to dev, and
this fix removes the companion-view rule that was its recurring part.
Gates the previously open support-agent, procurement, compliance,
facilities, list-users and trade-access controllers, separates customer
from staff routes across bookings, contracts, companies, billing,
warehouses, files and train scheduling, and moves billing, overview,
reports and the settings controllers onto their own keys instead of the
blanket admin key. Drops the demo-permissions module and the untested
notification test route.
