feat: dashboard restructure, integrations, settings, UI fixes

Dashboard:
- Split into components (kpi-cards, agent-table, missed-queue)
- Add collapsible AI panel on right (same pattern as Call Desk)
- Add tabs: Agent Performance | Missed Queue | Campaigns
- Date range filter in header

Integrations page:
- Ozonetel (connected), WhatsApp, Facebook, Google, Instagram, Website, Email
- Status badges, config details, webhook URL with copy button

Settings page:
- Employee table from workspaceMembers GraphQL query
- Name, email, roles, status, reset password action

Fixes:
- Fix CALLS_QUERY: callerNumber needs { primaryPhoneNumber }, recordingUrl → recording { primaryLinkUrl }
- Remove duplicate AI Assistant header
- Remove Follow-ups from CC agent sidebar (already in worklist tabs)
- Remove global search from TopBar (decorative, unused)
- Slim down TopBar height
- Fix search/table gap in worklist
- Add brand border to active nav item

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/layout/sidebar.tsx

@@ -88,7 +88,6 @@ const getNavSections = (role: string): NavSection[] => {
             { label: 'Call Center', items: [
                 { label: 'Call Desk', href: '/', icon: IconPhone },
                 { label: 'Patients', href: '/patients', icon: IconHospitalUser },
-                { label: 'Follow-ups', href: '/follow-ups', icon: IconBell },
                 { label: 'Call History', href: '/call-history', icon: IconClockRewind },
             ]},
         ];
@@ -144,9 +143,7 @@ export const Sidebar = ({ activeUrl = "/" }: SidebarProps) => {
             {/* Logo + collapse toggle */}
             <div className={cx("flex items-center gap-2", collapsed ? "justify-center px-2" : "justify-between px-4 lg:px-5")}>
                 {collapsed ? (
-                    <div className="flex items-center justify-center bg-brand-solid rounded-lg p-1.5 size-8 shrink-0">
-                        <span className="text-white font-bold text-sm leading-none">H</span>
-                    </div>
+                    <img src="/favicon-32.png" alt="Helix Engage" className="size-8 rounded-lg shrink-0" />
                 ) : (
                     <div className="flex flex-col gap-1">
                         <span className="text-md font-bold text-primary">Helix Engage</span>