Draft ADR-010 frontend hook contract; relabel Equipment to Machines

ADR-010 (PROPOSED): four data-only frontend hooks following the
get_reports precedent - get_settings_cards, get_asset_panels,
get_map_overlays, get_asset_presentation - batched as a future contract
0.7.0. Warranty proves asset panels first, measuringtools the rest;
accept only after both run on the hooks.

Display-label swap Equipment -> Machines across nav, list, form,
detail, search, map editor, and settings copy (incl the API-failure
fallback nav). Identifiers unchanged: plugin name, tables,
/api/equipment, asset type, and routes all stay.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

frontend/src/views/AppLayout.vue

@@ -136,7 +136,7 @@ const defaultNav = [
   { name: 'Notifications', icon: 'bell', route: '/notifications', position: 5 },
   { name: 'Calendar', icon: 'calendar', route: '/calendar', position: 6 },
   { name: 'Map', icon: 'map', route: '/map', position: 4 },
-  { name: 'Equipment', icon: 'cog', route: '/machines', position: 10 },
+  { name: 'Machines', icon: 'cog', route: '/machines', position: 10 },
   { name: 'PCs', icon: 'desktop', route: '/pcs', position: 15 },
   { name: 'Network', icon: 'network-wired', route: '/network', position: 18 },
   { name: 'Printers', icon: 'printer', route: '/printers', position: 20 },