feat: remove FM feature from Vector

FMs move to a separate application. Drops Fm/FmPart tables + Repair.fmId
column, deletes FM_OPENED/FM_CLOSED PartEvent rows, strips FM enums +
webhook events + shared contracts, removes FM routes/services/pages/UI,
and collapses dashboard admin ops to Repairs 7d/30d + trend + custody
backlog.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

apps/web/src/components/layout/Sidebar.tsx

@@ -13,7 +13,6 @@ import {
   Server,
   Users as UsersIcon,
   Webhook,
-  Wrench,
 } from 'lucide-react';
 import { cn, Button, Tooltip, TooltipContent, TooltipTrigger } from '@vector/ui';
 import { useAuth } from '../../contexts/AuthContext.js';
@@ -31,7 +30,6 @@ const NAV_ITEMS: NavItem[] = [
   { to: '/part-models', label: 'Part models', icon: Layers },
   { to: '/locations', label: 'Locations', icon: MapPinned },
   { to: '/manufacturers', label: 'Manufacturers', icon: Boxes },
-  { to: '/fms', label: 'FMs', icon: Wrench },
   { to: '/repairs', label: 'Repairs', icon: ArrowRightLeft },
   { to: '/custody', label: 'My Custody', icon: Hand },
   { to: '/hosts', label: 'Hosts', icon: Server },