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/aggregate.ts

@@ -9,6 +9,7 @@ import {
   countReconciliationDue,
   countSuggestedMatches,
   countSupplierInvoicesAwaitingApproval,
+  countUnbookedSkattekontoRows,
   countUnbookedTransactions,
   countVerifikatMissingDocument,
 } from './categories'
@@ -40,6 +41,7 @@ export async function getWorklistCounts(
 ): Promise<WorklistCounts> {
   const [
     bookTransaction,
+    bookSkattekonto,
     inboxDocument,
     suggestedMatch,
     supplierInvoiceApproval,
@@ -50,6 +52,7 @@ export async function getWorklistCounts(
     reconciliationDue,
   ] = await Promise.all([
     countUnbookedTransactions(supabase, companyId),
+    countUnbookedSkattekontoRows(supabase, companyId),
     countInboxDocuments(supabase, companyId),
     options.suggestedMatches
       ? Promise.resolve(options.suggestedMatches).then((m) => m.length)
@@ -65,6 +68,7 @@ export async function getWorklistCounts(
   return {
     counts: {
       book_transaction: bookTransaction,
+      book_skattekonto: bookSkattekonto,
       inbox_document: inboxDocument,
       suggested_match: suggestedMatch,
       supplier_invoice_approval: supplierInvoiceApproval,
@@ -76,6 +80,7 @@ export async function getWorklistCounts(
     },
     total:
       bookTransaction +
+      bookSkattekonto +
       inboxDocument +
       supplierInvoiceApproval +
       verifikatMissingDocument +