feat: telephony overhaul + appointment availability + Force Ready

Telephony:
- Track UCID from SIP headers and ManualDial response
- Submit disposition to Ozonetel via Set Disposition API (ends ACW)
- Fix outboundPending flag lifecycle to prevent inbound poisoning
- Fix render order: post-call UI takes priority over active state
- Pre-select disposition when appointment booked during call

Appointment form:
- Convert from slideout to inline collapsible below call card
- Fetch real doctors from platform, filter by department
- Show time slot availability grid (booked slots greyed + strikethrough)
- Double-check availability before booking
- Support edit and cancel existing appointments

UI:
- Add Force Ready button to profile menu (logout+login to clear ACW)

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

src/components/layout/sidebar.tsx

@@ -21,6 +21,8 @@ import { NavAccountCard } from "@/components/application/app-navigation/base-com
 import { NavItemBase } from "@/components/application/app-navigation/base-components/nav-item";
 import type { NavItemType } from "@/components/application/app-navigation/config";
 import { Avatar } from "@/components/base/avatar/avatar";
+import { apiClient } from "@/lib/api-client";
+import { notify } from "@/lib/toast";
 import { useAuth } from "@/providers/auth-provider";
 import { sidebarCollapsedAtom } from "@/state/sidebar-state";
 import { cx } from "@/utils/cx";
@@ -127,6 +129,15 @@ export const Sidebar = ({ activeUrl = "/" }: SidebarProps) => {
         navigate('/login');
     };
 
+    const handleForceReady = async () => {
+        try {
+            await apiClient.post('/api/ozonetel/agent-ready', {});
+            notify.success('Agent Ready', 'Agent state has been reset to Ready');
+        } catch {
+            notify.error('Force Ready Failed', 'Could not reset agent state');
+        }
+    };
+
     const navSections = getNavSections(user.role);
 
     const content = (
@@ -219,6 +230,7 @@ export const Sidebar = ({ activeUrl = "/" }: SidebarProps) => {
                         }]}
                         selectedAccountId="current"
                         onSignOut={handleSignOut}
+                        onForceReady={handleForceReady}
                     />
                 )}
             </div>