style(ui): system-wide UX/UI polish pass — design-system conformance + copy cleanup (#835)

* style(ui): system-wide UX/UI polish pass — design-system conformance + copy cleanup

Multi-agent scan of all 404 UI files against the locked design system, then
141 verified surgical fixes across 109 files (net -32 lines):

- Remove forbidden elevation/motion: shadow-* and rounded-xl on cards, active:scale
  bounce, hover:shadow on list items, transition-all -> transition-colors.
- Drop font-medium from single-weight Hedvig display headings/numerals.
- Replace raw rainbow Tailwind status colors with Badge variants / brand tokens /
  neutral surfaces (achromatic chrome, semantic colors stay data-only).
- Route raw dates through formatDate(), hand-rolled currency through formatCurrency(),
  add tabular-nums to financial figures; text-gray-* -> text-foreground tokens.
- Swap hand-rolled skeletons for the Skeleton primitive; off-scale spacing -> token scale.
- Fix copy: mislabeled "Leverantörsfakturor" -> "Utgifter" on bank-import outflow total,
  collapse no-op identical-branch ternaries, broken Swedish diacritics (mojibake),
  correct mismatch-password toast, correct supplier currency-field label.
- Remove PII-leaking debug console.log on register, stray console.logs.

Verified: tsc clean on all changed files, eslint clean, production build passes.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

* fix(auth): sanitize residual error logs in register flow

Follow-up to PR review (compliance swarm V16 / GDPR Art.5(1)(f)): the
remaining console.error calls in the register flow passed raw error
objects, which Supabase may populate with PII (email) in nested fields.
Log only sanitized message strings instead.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

components/skattekonto/SkattekontoMatchDialog.tsx

@@ -21,7 +21,7 @@ import {
   TableRow,
 } from '@/components/ui/table'
 import { useToast } from '@/components/ui/use-toast'
-import { formatCurrency } from '@/lib/utils'
+import { formatCurrency, formatDate } from '@/lib/utils'
 import { formatVoucher } from '@/lib/bookkeeping/voucher-series-resolver'
 import type { StoredSkattekontoTransaction } from '@/types/skatteverket'
 
@@ -135,7 +135,7 @@ export function SkattekontoMatchDialog({
           <DialogDescription>
             {row && (
               <>
-                {row.transaktionsdatum} • {row.transaktionstext} •{' '}
+                {formatDate(row.transaktionsdatum)} • {row.transaktionstext} •{' '}
                 <span className="tabular-nums">
                   {formatCurrency(Number(row.belopp_skatteverket))}
                 </span>
@@ -176,7 +176,7 @@ export function SkattekontoMatchDialog({
               <TableBody>
                 {candidates.map(c => (
                   <TableRow key={c.journal_entry_id}>
-                    <TableCell className="tabular-nums">{c.entry_date}</TableCell>
+                    <TableCell className="tabular-nums">{formatDate(c.entry_date)}</TableCell>
                     <TableCell className="tabular-nums">
                       {formatVoucher(c)}
                     </TableCell>