fix(worklist): count unbooked skattekonto rows in the Att göra badge and Hem list (#2180) (#2227)

The Transaktioner inbox lists unbooked skattekonto rows next to unbooked
bank rows, but the sidebar badge and the Hem "Att göra" list counted bank
rows only, so a migrated tax account waited in the inbox unseen.

- lib/worklist: new category book_skattekonto with the inbox's own
  predicate (status = 'booked', no verifikat, not ignored); aggregate
  includes it in counts and total.
- Hem: a "Bokföra skattekontohändelser" row under Bokför, deep-linking to
  /transactions?source=skatteverket.
- Sidebar badge hook: the same third head-count query, summed into the
  /transactions badge.
- DashboardNav subscribes to skattekonto_transactions realtime changes;
  migration adds the table to the supabase_realtime publication so a
  booked or ignored row drops the badge without a manual refresh.

Closes #2180


Claude-Session: https://claude.ai/code/session_01QPQLwHNEiQfiCNLSMzXMiQ

Co-authored-by: Jakob Wennberg <311770904+jakobwennberg-oss@users.noreply.github.com>
Co-authored-by: Claude Fable 5.1 <noreply@anthropic.com>

lib/worklist/__tests__/aggregate.test.ts

@@ -3,6 +3,7 @@ import type { SupabaseClient } from '@supabase/supabase-js'
 
 vi.mock('../categories', () => ({
   countUnbookedTransactions: vi.fn().mockResolvedValue(4),
+  countUnbookedSkattekontoRows: vi.fn().mockResolvedValue(7),
   countInboxDocuments: vi.fn().mockResolvedValue(6),
   countSuggestedMatches: vi.fn().mockResolvedValue(2),
   countSupplierInvoicesAwaitingApproval: vi.fn().mockResolvedValue(1),
@@ -26,6 +27,7 @@ describe('getWorklistCounts', () => {
     const { counts } = await getWorklistCounts(supabase, 'company-1')
     expect(counts).toEqual({
       book_transaction: 4,
+      book_skattekonto: 7,
       inbox_document: 6,
       suggested_match: 2,
       supplier_invoice_approval: 1,
@@ -49,7 +51,7 @@ describe('getWorklistCounts', () => {
 
   it('excludes suggested_match from the total (subset of book_transaction)', async () => {
     const { total } = await getWorklistCounts(supabase, 'company-1')
-    // 4 + 6 + 1 + 3 + 5 + 1 + 2 + 1, without the 2 suggested matches.
-    expect(total).toBe(23)
+    // 4 + 7 + 6 + 1 + 3 + 5 + 1 + 2 + 1, without the 2 suggested matches.
+    expect(total).toBe(30)
   })
 })