fix(expenses): review follow-ups from #2317 (#2326)

- The Utlägg nav row is computed server-side, so the first booked claim
  now refreshes the App Router tree instead of staying hidden until a
  full reload.
- The dialog's default date is the local calendar date; toISOString() is
  UTC and dated a receipt booked after midnight CEST to the previous day.
- listExpensePayoutsDue pages through every registered claim with
  fetchAllRows instead of stopping at 500 rows: a person omitted or a
  total understated there is money the company owes someone.
- The attention resource's payout instruction names the liability
  account per row (2893 / 2018 / 2820) instead of only 2893/2820.


Claude-Session: https://claude.ai/code/session_01P8YsvPqjfGxGZUkGeBVUWQ

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

extensions/general/mcp-server/resources/attention.ts

@@ -439,7 +439,7 @@ export const attentionResource: McpResource = {
         })),
         next: {
           description:
-            'Betala ut från företagskontot och bokför utbetalningen (2893/2820 D mot 19xx K) via /expenses eller POST /api/expense-claims/payouts.',
+            'Betala ut från företagskontot och bokför utbetalningen: debitera radens liability_account (2893 ägare i AB, 2018 ägare i enskild firma, 2820 anställd) mot 19xx K, via /expenses eller POST /api/expense-claims/payouts.',
         },
       })
     }