chore(ui): drop unused dashboard KPIs + soften membership wording

Remove the "Total Clients / Active Interests / Pipeline Value /
Occupancy Rate" KPI grid from the dashboard — duplicated by the
charts below and rarely scanned. Pipeline funnel, occupancy timeline,
revenue breakdown, lead source charts and the activity feed remain.

Rename the company-members dropdown action "End Membership" →
"Remove from company" — matches how reps describe the action.

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

src/components/companies/company-members-tab.tsx

@@ -246,7 +246,7 @@ export function CompanyMembersTab({ companyId, portSlug }: CompanyMembersTabProp
                                 disabled={endMutation.isPending}
                               >
                                 <XCircle className="mr-2 h-3.5 w-3.5" />
-                                End Membership
+                                Remove from company
                               </DropdownMenuItem>
                             )}
                           </DropdownMenuContent>