feat: inline forms, transfer redesign, patient fixes, UI polish

- Appointment/enquiry forms reverted to inline rendering (not modals)
- Forms: flat scrollable section with pinned footer, no card wrapper
- Appointment form: DatePicker component, date prefilled, removed Returning Patient checkbox
- Enquiry form: removed disposition dropdown, lead status defaults to CONTACTED
- Transfer dialog: agent picker with live status, doctor list with department, select-then-connect flow
- Transfer: removed external number input, moved Cancel/Connect to pinned header row
- Button mutual exclusivity: Book Appt / Enquiry / Transfer close each other
- Patient name write-back: appointment + enquiry forms update patient fullName after save
- Caller cache invalidation: POST /api/caller/invalidate after name update
- Follow-up fix (#513): assignedAgent, patientId, date validation in createFollowUp
- Patients page: removed status filters + column, added pagination (15/page)
- Pending badge removed from call desk header
- Table resize handles visible (bg-tertiary pill)
- Sim call button: dev-only (import.meta.env.DEV)
- CallControlStrip component (reusable, not currently mounted)

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

src/components/call-desk/call-control-strip.tsx

@@ -0,0 +1,61 @@
+import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
+import {
+    faMicrophone, faMicrophoneSlash,
+    faPause, faPlay, faPhoneHangup,
+} from '@fortawesome/pro-duotone-svg-icons';
+import { useSip } from '@/providers/sip-provider';
+import { cx } from '@/utils/cx';
+
+const formatDuration = (seconds: number): string => {
+    const m = Math.floor(seconds / 60).toString().padStart(2, '0');
+    const s = (seconds % 60).toString().padStart(2, '0');
+    return `${m}:${s}`;
+};
+
+export const CallControlStrip = () => {
+    const { callState, callDuration, isMuted, isOnHold, toggleMute, toggleHold, hangup } = useSip();
+
+    if (callState !== 'active' && callState !== 'ringing-out') return null;
+
+    return (
+        <div className="flex items-center justify-between rounded-lg bg-success-secondary px-3 py-2">
+            <div className="flex items-center gap-2">
+                <span className="relative flex size-2">
+                    <span className="absolute inline-flex size-full animate-ping rounded-full bg-success-solid opacity-75" />
+                    <span className="relative inline-flex size-2 rounded-full bg-success-solid" />
+                </span>
+                <span className="text-xs font-semibold text-success-primary">Live Call</span>
+                <span className="text-xs font-bold tabular-nums text-success-primary">{formatDuration(callDuration)}</span>
+            </div>
+            <div className="flex items-center gap-1">
+                <button
+                    onClick={toggleMute}
+                    title={isMuted ? 'Unmute' : 'Mute'}
+                    className={cx(
+                        'flex size-7 items-center justify-center rounded-md transition duration-100 ease-linear',
+                        isMuted ? 'bg-error-solid text-white' : 'bg-primary text-fg-quaternary hover:text-fg-secondary',
+                    )}
+                >
+                    <FontAwesomeIcon icon={isMuted ? faMicrophoneSlash : faMicrophone} className="size-3" />
+                </button>
+                <button
+                    onClick={toggleHold}
+                    title={isOnHold ? 'Resume' : 'Hold'}
+                    className={cx(
+                        'flex size-7 items-center justify-center rounded-md transition duration-100 ease-linear',
+                        isOnHold ? 'bg-warning-solid text-white' : 'bg-primary text-fg-quaternary hover:text-fg-secondary',
+                    )}
+                >
+                    <FontAwesomeIcon icon={isOnHold ? faPlay : faPause} className="size-3" />
+                </button>
+                <button
+                    onClick={hangup}
+                    title="End Call"
+                    className="flex size-7 items-center justify-center rounded-md bg-error-solid text-white hover:bg-error-solid_hover transition duration-100 ease-linear"
+                >
+                    <FontAwesomeIcon icon={faPhoneHangup} className="size-3" />
+                </button>
+            </div>
+        </div>
+    );
+};