feat: call desk redesign — 2-panel layout, collapsible sidebar, inline AI, ringtone

- Collapsible sidebar with Jotai atom (icon-only mode, persisted to localStorage)
- 2-panel call desk: worklist (60%) + context panel (40%) with AI + Lead 360 tabs
- Inline AI call prep card — known lead summary or unknown caller script
- Active call card with compact Answer/Decline buttons
- Worklist panel with human-readable labels, priority badges, click-to-select
- Context panel auto-switches to Lead 360 when lead selected or call incoming
- Browser ringtone via Web Audio API on incoming calls
- Sonner + Untitled UI IconNotification for toast system
- apiClient pattern: centralized post/get/graphql with auto-toast on errors
- Remove duplicate avatar from top bar, hide floating widget on call desk
- Fix Link routing in collapsed sidebar (was using <a> causing full page reload)
- Fix GraphQL field names: adStatus→status, platformUrl needs subfield selection
- Silent mode for DataProvider queries to prevent toast spam

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

package.json

@@ -27,12 +27,13 @@
         "qr-code-styling": "^1.9.2",
         "react": "^19.2.3",
         "react-aria": "^3.46.0",
-        "react-aria-components": "^1.15.1",
+        "react-aria-components": "^1.16.0",
         "react-dom": "^19.2.3",
         "react-hotkeys-hook": "^5.2.3",
         "react-router": "^7.13.0",
         "socket.io-client": "^4.8.3",
-        "tailwind-merge": "^3.4.0",
+        "sonner": "^2.0.7",
+        "tailwind-merge": "^3.5.0",
         "tailwindcss": "^4.1.18",
         "tailwindcss-animate": "^1.0.7",
         "tailwindcss-react-aria-components": "^2.0.1"