fix: P1 call-desk defects batch

- Mute persists across calls: sip-manager's "ended/failed" branch now
  resets the Recoil sipIsMutedAtom + sipIsOnHoldAtom (previously only
  the SIP track was unmuted, leaving the UI icon + toggle logic in a
  muted state that the next call inherited).
- Telephony-unavailable dial pad: call-desk.tsx dial-pad "Call" button
  was missing an isRegistered check in its disabled prop, so it stayed
  clickable when SIP was down. Button now shows "Telephony unavailable"
  and is disabled.
- Past dates in Follow-up: enquiry-form's follow-up date input had no
  min constraint. Switched to a raw <input type="date"> with min set
  to today's ISO date.
- Returning-patient AI summary during call: ai-chat-panel now auto-fires
  a "give me a quick summary of <caller>" request whenever the caller's
  leadId changes (new incoming call). Clears prior chat state so each
  caller starts fresh.
- Remove Type column in Patients page (Badge import also pruned).

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

src/components/call-desk/ai-chat-panel.tsx

@@ -27,7 +27,7 @@ export const AiChatPanel = ({ callerContext, onChatStart }: AiChatPanelProps) =>
 
     const token = localStorage.getItem('helix_access_token') ?? '';
 
-    const { messages, input, handleSubmit, handleInputChange, isLoading, append } = useChat({
+    const { messages, input, handleSubmit, handleInputChange, isLoading, append, setMessages } = useChat({
         api: `${API_URL}/api/ai/stream`,
         streamProtocol: 'text',
         headers: {
@@ -49,6 +49,28 @@ export const AiChatPanel = ({ callerContext, onChatStart }: AiChatPanelProps) =>
         }
     }, [messages, onChatStart]);
 
+    // Auto-fire a patient-summary request when a caller with a leadId appears
+    // on the panel. Resets whenever the caller changes (new incoming call) so
+    // each call starts fresh. The sidecar's AI agent inspects the leadId and
+    // replies with appointment/disposition/notes history when the caller is
+    // a returning patient, or a brief "net-new caller" ack otherwise.
+    const autoFiredForLeadRef = useRef<string | null>(null);
+    useEffect(() => {
+        const leadId = callerContext?.leadId ?? null;
+        if (!leadId) return;
+        if (autoFiredForLeadRef.current === leadId) return;
+
+        // New caller — clear any prior chat state and fire the summary prompt.
+        autoFiredForLeadRef.current = leadId;
+        setMessages([]);
+        chatStartedRef.current = false;
+        const name = callerContext?.leadName ?? 'this caller';
+        append({
+            role: 'user',
+            content: `Give me a quick summary of ${name} — prior appointments, last disposition, any outstanding notes. If net-new, say so.`,
+        });
+    }, [callerContext?.leadId, callerContext?.leadName, append, setMessages]);
+
     const handleQuickAction = (prompt: string) => {
         append({ role: 'user', content: prompt });
     };