fix(audit): replace 'coming soon' tab stubs (H7 + R2-M5)

H7: Three tabs were rendering "coming soon" placeholders to every user
on every detail page:
- Client Files: now uses ClientFilesTab (already existed) which renders
  the FileGrid + upload zone via /api/v1/files?clientId=...
- Client Reservations: split into Active / History sections; History
  lazy-loads ended + cancelled reservations on demand from
  /api/v1/berth-reservations?clientId=&status=
- Berth Waiting List + Maintenance Log: removed from buildBerthTabs
  until the underlying surfaces ship (schema tables exist; UIs don't)

R2-M5: Company Documents tab was a "Coming soon" EmptyState. Removed
from buildCompanyTabs until /api/v1/files accepts a companyId filter
(schema supports it, validator doesn't).

1175/1175 vitest passing.

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

src/components/companies/company-tabs.tsx

@@ -3,7 +3,6 @@
 import { useMutation, useQueryClient } from '@tanstack/react-query';
 
 import type { DetailTab } from '@/components/shared/detail-layout';
-import { EmptyState } from '@/components/shared/empty-state';
 import { InlineEditableField } from '@/components/shared/inline-editable-field';
 import { InlineCountryField } from '@/components/shared/inline-country-field';
 import { SubdivisionCombobox } from '@/components/shared/subdivision-combobox';
@@ -227,11 +226,9 @@ export function getCompanyTabs({
         />
       ),
     },
-    {
-      id: 'documents',
-      label: 'Documents',
-      content: <EmptyState title="Documents" description="Coming soon" />,
-    },
+    // The Documents tab was a "Coming soon" stub. Hidden until the
+    // /api/v1/files endpoint accepts a companyId filter (the schema
+    // supports it; the validator doesn't).
     {
       id: 'notes',
       label: 'Notes',