feat: DynamicTable adapter for Untitled UI Table + import preview upgrade

- DynamicTable component: wraps Table for dynamic/unknown columns with headerRenderer support
- Import wizard preview now uses DynamicTable instead of plain HTML table
- Fixed modal height (80vh) to prevent jitter between wizard steps
- Campaign card shows actual linked lead count, not marketing metric

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/components/application/table/dynamic-table.tsx

@@ -0,0 +1,61 @@
+import type { ReactNode } from 'react';
+import { TableBody as AriaTableBody } from 'react-aria-components';
+import { Table } from './table';
+
+export type DynamicColumn = {
+    id: string;
+    label: string;
+    headerRenderer?: () => ReactNode;
+    width?: string;
+};
+
+export type DynamicRow = {
+    id: string;
+    [key: string]: any;
+};
+
+interface DynamicTableProps<T extends DynamicRow> {
+    columns: DynamicColumn[];
+    rows: T[];
+    renderCell: (row: T, columnId: string) => ReactNode;
+    rowClassName?: (row: T) => string;
+    size?: 'sm' | 'md';
+    maxRows?: number;
+}
+
+export const DynamicTable = <T extends DynamicRow>({
+    columns,
+    rows,
+    renderCell,
+    rowClassName,
+    size = 'sm',
+    maxRows,
+}: DynamicTableProps<T>) => {
+    const displayRows = maxRows ? rows.slice(0, maxRows) : rows;
+
+    return (
+        <Table size={size} aria-label="Dynamic table">
+            <Table.Header>
+                {columns.map(col => (
+                    <Table.Head key={col.id} id={col.id} label={col.headerRenderer ? '' : col.label}>
+                        {col.headerRenderer?.()}
+                    </Table.Head>
+                ))}
+            </Table.Header>
+            <AriaTableBody items={displayRows}>
+                {(row) => (
+                    <Table.Row
+                        id={row.id}
+                        className={rowClassName?.(row)}
+                    >
+                        {columns.map(col => (
+                            <Table.Cell key={col.id}>
+                                {renderCell(row, col.id)}
+                            </Table.Cell>
+                        ))}
+                    </Table.Row>
+                )}
+            </AriaTableBody>
+        </Table>
+    );
+};