feat(webshop): generate orderunderlag and attach it to the verifikat at booking (#1899)

* feat(webshop): generate orderunderlag PDF and attach it to the verifikat at booking

Booked webshop orders only carried the VAT split; the verifikat showed no
product lines, customer or payment method although the sync already stores
all of it in webshop_orders.line_items (#1881).

- lib/webshop-orders/order-underlag.tsx: pure model builder + react-pdf
  template (order lines, customer, payment method, per-rate VAT summary,
  SEK conversion facts) + archiveWebshopOrderUnderlag, which renders and
  archives the PDF on the committed verifikat through uploadDocument
  (upload_source system, extraction none), mirroring archiveIssuedInvoicePdf.
  Never throws: the booking is immutable by then.
- book route: archive after commitEntry; response gains underlag_archived.
  FX-retry now also syncs the in-memory row so the underlag shows the
  resolved SEK facts.
- webshop_order added to NEEDS_DOC_SOURCE_TYPES and (new migration
  20260825140000) to the verifikat_without_documents needs-doc list, so a
  failed attach or a historical booking surfaces on the saknar-underlag
  worklist. transactions_without_documents is deliberately unchanged.
- tests: underlag model/render/archive unit tests, book-route archive and
  failure-isolation cases, pg test extended (per-source-type probe now
  covers webshop_order; explicit flagged/silenced pair).

Fixes #1881

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* chore(migrations): move webshop needs-doc migration after main's 20260825150000

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* test(webshop): add manually_booked fields to the underlag order fixture

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

* fix(webshop): skeptic findings on the orderunderlag (#1881)

Two refutations from the skeptic pass on PR #1899, both fixed:

1. Correctness: sv-SE Intl emits U+2212 MINUS SIGN for negatives, which
   Helvetica/WinAnsi PDF fonts drop silently, so refund and discount
   amounts on the archived underlag rendered as POSITIVE. formatAmount now
   replaces U+2212 with an ASCII hyphen (same guard as formatPdfCurrency),
   is exported, and is pinned by a regression test.

2. Regression: NEEDS_DOC_SOURCE_TYPES had two hardcoded copies that missed
   webshop_order, so flagged rows rendered without the "Underlag saknas"
   chip, waiver toggle, or batch-exempt selection, and the weekly
   missing-underlag push cron disagreed with the badge. The constant now
   lives in dependency-free lib/worklist/types.ts (client-safe), is
   re-exported from categories.ts, and both JournalEntryList.tsx and
   push-notifications/notification-scheduler.ts consume it instead of
   their own copies.

Also: "Bokfört i SEK" reworded to "Motsvarande i SEK" (compliance skeptic
observation: the dialog's lines are user-editable, so the underlag must
state the order's conversion, not claim a booking fact).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

---------

Co-authored-by: Claude Fable 5 <noreply@anthropic.com>

tests/pg/document-surfaces-unification.pg.test.ts

@@ -354,6 +354,39 @@ describe('document surfaces unification', () => {
     expect((res.verifikat ?? []).map((v) => v.journal_entry_id).sort()).toEqual(expected.sort())
   })
 
+  it('webshop_order: flagged without underlag, silenced by the archived orderunderlag (#1881)', async () => {
+    // The book route archives a generated orderunderlag on the verifikat; a
+    // historical booking (or a failed attach) has no doc and must surface.
+    const s = await seedCompany()
+    const mkWebshopJe = (n: number) =>
+      insertPostedJournalEntry({
+        userId: s.userId,
+        companyId: s.companyId,
+        fiscalPeriodId: s.fiscalPeriodId,
+        voucherNumber: n,
+        entryDate: '2026-06-15',
+        description: `webshop order ${n}`,
+        sourceType: 'webshop_order',
+        lines: [
+          { accountNumber: '1930', debitAmount: 100 * n, creditAmount: 0 },
+          { accountNumber: '3001', debitAmount: 0, creditAmount: 100 * n },
+        ],
+      })
+    const jeWithUnderlag = await mkWebshopJe(1)
+    const jeWithoutUnderlag = await mkWebshopJe(2)
+    await attachDocument({
+      userId: s.userId,
+      companyId: s.companyId,
+      journalEntryId: jeWithUnderlag,
+    })
+
+    const res = await verifikatSurface(s.companyId)
+    expect(res.ok).toBe(true)
+    const ids = (res.verifikat ?? []).map((v) => v.journal_entry_id)
+    expect(ids).toContain(jeWithoutUnderlag)
+    expect(ids).not.toContain(jeWithUnderlag)
+  })
+
   it('tenant guard on the transactions surface (NULL + foreign company)', async () => {
     const { rows } = await getPool().query<{ r: TransactionsResult }>(
       `SELECT public.transactions_without_documents(NULL, NULL, 20, 0) AS r`,