feat: post-call workflow — disposition, appointment booking, follow-up creation

ActiveCallCard now handles the full post-call flow:
- Call ends → Disposition form appears (6 options + notes)
- "Appointment Booked" → Opens appointment booking slideout
- "Follow-up Needed" → Auto-creates follow-up in platform
- Other dispositions → Logs call and returns to worklist
- "Book Appt" button available during active call too
- Creates Call record in platform on disposition submit
- Removed auto-reset to idle (ActiveCallCard manages lifecycle)
- "Back to Worklist" resets SIP state via Jotai atoms

Also fixes:
- All 7 GraphQL queries corrected (LINKS subfields, field renames)
- Campaign edit button moved to bottom-right
- Avg Response Time uses Math.abs for seed data edge case

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

src/providers/sip-provider.tsx

@@ -64,16 +64,8 @@ export const SipProvider = ({ children }: PropsWithChildren) => {
         }
     }, [callState]);
 
-    // Auto-reset to idle after ended/failed
-    useEffect(() => {
-        if (callState === 'ended' || callState === 'failed') {
-            const timer = setTimeout(() => {
-                setCallState('idle');
-                setCallerNumber(null);
-            }, 2000);
-            return () => clearTimeout(timer);
-        }
-    }, [callState, setCallState, setCallerNumber]);
+    // No auto-reset — the ActiveCallCard handles post-call flow (disposition → appointment → done)
+    // and resets to idle via the "Back to Worklist" button
 
     // Cleanup on page unload
     useEffect(() => {