fix(nav): drop dedicated EOI route + alerts sidebar entry, fix paginated-URL bug

Trimmed two surfaces that didn't earn their nav weight:

  - The /[port]/documents/eoi route added in the previous commit was
    redundant with the per-interest EOI status milestones already on
    the interest detail and the existing eoi_queue tab inside the
    Documents hub. Removed the route + the "EOI queue" sidebar entry.
  - The Alerts sidebar entry was promoting a mostly-empty page that
    duplicated the dashboard alert rail. Dropped the entry; the
    /[port]/alerts route stays accessible via the dashboard rail's
    "View all" link and the topbar bell, which is enough for the
    audit-trail use case.

While testing the EOI tab, found and fixed a real bug: usePaginatedQuery
was producing malformed URLs like `…?tab=eoi_queue&signatureOnly=true?page=1&limit=25`
(two `?` separators) when the endpoint string already carried query
params. The API rejected those with 400, so the EOI tab in the
documents hub was silently broken. The hook now uses `&` when the
endpoint already contains a `?`.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/layout/sidebar.tsx

@@ -12,12 +12,10 @@ import {
   Building2,
   Receipt,
   FileText,
-  FileSignature,
   FolderOpen,
   Mail,
   Bell,
   Camera,
-  ShieldAlert,
   Settings,
   Shield,
   Home,
@@ -69,7 +67,6 @@ function buildNavSections(portSlug: string | undefined): NavSection[] {
       marinaRequired: true,
       items: [
         { href: `${base}/dashboard`, label: 'Dashboard', icon: LayoutDashboard },
-        { href: `${base}/alerts`, label: 'Alerts', icon: ShieldAlert },
         { href: `${base}/clients`, label: 'Clients', icon: Users },
         { href: `${base}/yachts`, label: 'Yachts', icon: Ship },
         { href: `${base}/companies`, label: 'Companies', icon: Building2 },
@@ -98,7 +95,6 @@ function buildNavSections(portSlug: string | undefined): NavSection[] {
       marinaRequired: true,
       items: [
         { href: `${base}/documents`, label: 'Documents', icon: FileText },
-        { href: `${base}/documents/eoi`, label: 'EOI queue', icon: FileSignature },
         { href: `${base}/documents/files`, label: 'Files', icon: FolderOpen },
       ],
     },