shared currency field + expenses rendered from react-openapi fields

- add CurrencyField renderer (inherits NumberField for editing) with
  cached Intl formatter; route via uiType "currency" in list/detail/form
- add resourceConfig.fieldTypes override applied in AppProvider, so
  amount becomes currency for both Admin and the Expenses page
- render Expenses page through react-openapi fields (ListCellRenderer,
  DetailFieldRenderer, applyDisplayFormat) instead of custom fields
- resolve relative /uploads entity logos against the API base URL on
  load so entity logos render on the expenses feed
- drop custom avatar, currency/date formatters from the Expense module

react-openapi/src/components/fields/DetailFieldRenderer.tsx

@@ -2,6 +2,7 @@ import React from "react";
 import { Box, Typography, Avatar } from "@mui/material";
 import type { FieldConfig } from "../../types";
 import { ListCellRenderer } from "./ListCellRenderer";
+import { CurrencyField } from "./renderers/CurrencyField";
 
 interface DetailFieldProps {
   field: FieldConfig;
@@ -18,7 +19,9 @@ export function DetailFieldRenderer({ field, value, displayFormat, basePath }: D
       <Typography variant="caption" color="text.secondary" fontWeight={600} sx={{ mb: 0.25, display: "block" }}>
         {field.label}
       </Typography>
-      {field.uiType === "image" ? (
+      {field.uiType === "currency" ? (
+        <CurrencyField value={Number(value)} large />
+      ) : field.uiType === "image" ? (
         <Avatar src={value} variant="rounded" sx={{ width: 120, height: 120 }} />
       ) : (
         <ListCellRenderer field={field} value={value} displayFormat={displayFormat} basePath={basePath} />