feat: Phase 2 — missed call queue, login redesign, button fix

- Missed call queue with FIFO auto-assignment, dedup, SLA tracking
- Status sub-tabs (Pending/Attempted/Completed/Invalid) in worklist
- missedCallId passed through disposition flow for callback tracking
- Login page redesigned: centered white card on blue background
- Disposition button changed to content-width
- NavAccountCard popover close fix on menu item click

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

src/hooks/use-worklist.ts

@@ -15,6 +15,10 @@ type MissedCall = {
     disposition: string | null;
     callNotes: string | null;
     leadId: string | null;
+    callbackstatus: string | null;
+    callsourcenumber: string | null;
+    missedcallcount: number | null;
+    callbackattemptedat: string | null;
 };
 
 type WorklistFollowUp = {