Add wallet invoices page

- wallet/invoices.tsx: table of invoices with download link; uses role-specific API prefix; handles loading/empty states

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/routes/dashboard/wallet/invoices.tsx

@@ -0,0 +1,120 @@
+import { createResource, createSignal, Show, For } from 'solid-js';
+import { A } from '@solidjs/router';
+import { getAuthHeader, authState, getRoleApiPath } from '~/lib/auth';
+
+const API = import.meta.env.VITE_API_URL ?? 'http://localhost:8000';
+
+const STATUS_BADGE: Record<string, string> = {
+  ISSUED: 'badge--blue',
+  PAID:   'badge--green',
+};
+
+export default function WalletInvoices() {
+  const [page, setPage] = createSignal(1);
+
+  const rc = () => authState().runtime_config;
+  const rolePrefix = () => getRoleApiPath(rc()?.role);
+
+  const [invoices] = createResource(() => page(), async (p) => {
+    const auth = getAuthHeader();
+    if (!auth.Authorization || !rc()?.role) return { data: [], pagination: null };
+    const res = await fetch(`${API}${rolePrefix()}/invoices?page=${p}&limit=20`, { headers: auth });
+    if (!res.ok) return { data: [], pagination: null };
+    return res.json();
+  });
+
+  return (
+    <div style={{ 'max-width': '900px' }}>
+      <div style={{ 'margin-bottom': '24px', display: 'flex', 'align-items': 'center', 'justify-content': 'space-between' }}>
+        <div>
+          <h1 style={{ margin: 0, 'font-size': '22px', 'font-weight': '800' }}>Invoices</h1>
+          <p style={{ margin: '6px 0 0', color: '#64748b', 'font-size': '14px' }}>
+            Download receipts for all your purchases.
+          </p>
+        </div>
+        <A href="/dashboard/wallet" class="btn" style={{ 'text-decoration': 'none' }}>← Wallet</A>
+      </div>
+
+      <div class="table-card">
+        <Show when={invoices.loading}>
+          <div class="loading-spinner">Loading invoices…</div>
+        </Show>
+
+        <Show when={!invoices.loading && (invoices()?.data?.length ?? 0) === 0}>
+          <div style={{ padding: '48px', 'text-align': 'center', color: '#64748b' }}>
+            <div style={{ 'font-size': '36px', 'margin-bottom': '12px' }}>🧾</div>
+            <p>No invoices yet. Invoices are generated after a successful payment.</p>
+          </div>
+        </Show>
+
+        <Show when={(invoices()?.data?.length ?? 0) > 0}>
+          <table class="data-table">
+            <thead>
+              <tr>
+                <th>Invoice #</th>
+                <th>Date</th>
+                <th>Amount</th>
+                <th>Status</th>
+                <th class="text-right">Download</th>
+              </tr>
+            </thead>
+            <tbody>
+              <For each={invoices()?.data}>
+                {(inv: any) => (
+                  <tr>
+                    <td style={{ 'font-family': 'monospace', 'font-size': '13px', 'font-weight': '600' }}>
+                      {inv.invoice_number ?? '—'}
+                    </td>
+                    <td style={{ 'font-size': '13px' }}>
+                      {inv.issued_at ? new Date(inv.issued_at).toLocaleDateString('en-IN', { dateStyle: 'medium' }) : '—'}
+                    </td>
+                    <td style={{ 'font-weight': '600' }}>
+                      ₹{((inv.total ?? 0) / 100).toLocaleString('en-IN', { minimumFractionDigits: 2 })}
+                    </td>
+                    <td>
+                      <span class={`badge ${STATUS_BADGE[inv.status] ?? 'badge--gray'}`}>
+                        {inv.status ?? '—'}
+                      </span>
+                    </td>
+                    <td style={{ 'text-align': 'right' }}>
+                      <Show when={inv.file_url}>
+                        <a
+                          href={inv.file_url}
+                          target="_blank"
+                          rel="noopener noreferrer"
+                          class="btn btn-sm"
+                          style={{ 'text-decoration': 'none' }}
+                        >
+                          Download PDF
+                        </a>
+                      </Show>
+                      <Show when={!inv.file_url}>
+                        <span style={{ 'font-size': '12px', color: '#94a3b8' }}>Generating…</span>
+                      </Show>
+                    </td>
+                  </tr>
+                )}
+              </For>
+            </tbody>
+          </table>
+        </Show>
+      </div>
+
+      <Show when={invoices()?.pagination?.total_pages > 1}>
+        <div style={{ display: 'flex', gap: '8px', 'margin-top': '20px', 'justify-content': 'center' }}>
+          <button class="btn btn-sm" disabled={page() === 1} onClick={() => setPage(p => p - 1)}>← Prev</button>
+          <span style={{ padding: '6px 12px', 'font-size': '13px', color: '#64748b' }}>
+            Page {page()} of {invoices()?.pagination?.total_pages}
+          </span>
+          <button
+            class="btn btn-sm"
+            disabled={page() >= invoices()?.pagination?.total_pages}
+            onClick={() => setPage(p => p + 1)}
+          >
+            Next →
+          </button>
+        </div>
+      </Show>
+    </div>
+  );
+}