feat(orders): expand a row to see the receipt it came from

Enrichment is the point of the ingestion pipeline (DECISIONS ING-8) — a bank
statement gives a date, an amount and a mangled descriptor, and everything that
makes a transaction understandable arrives by email. It was all reachable only
by opening the edit modal, which is a strange place to look for "what was in
this order".

Rows with a receipt behind them get a disclosure arrow in the description cell;
clicking expands an inline panel with the line items, the pick-up and drop-off
stops, the card tail and the provider's reference. Several rows can be open at
once — the point is comparing orders without losing your place.

The arrow appears only where `order_platform` is set. Putting one on every
transaction would promise detail that mostly does not exist.

OrderDetails moves out of edit-transaction-modal.tsx into its own component so
both surfaces render the same thing; `bare` drops the modal's top border when
it sits in a table row.

src/app/transactions/page.tsx

@@ -1,6 +1,6 @@
 "use client";
 
-import { useState, useCallback, useRef, useEffect, Suspense } from "react";
+import { useState, useCallback, useRef, useEffect, Suspense, Fragment } from "react";
 import { useSearchParams } from "next/navigation";
 import { useTransactions, useBanks, useUpdateTransaction, useBulkAction, useTags, useStatement, useCreateRule, useParticipants, useRecordPayment, useCurrentUser, useTrips, useAssignTransactionsToTrip, useRules } from "@/lib/hooks";
 import { CATEGORIES, formatCategory } from "@/lib/categories";
@@ -10,6 +10,7 @@ import { AddTransactionModal } from "@/components/add-transaction-modal";
 import { EditTransactionModal } from "@/components/edit-transaction-modal";
 import { CsvImportModal } from "@/components/csv-import-modal";
 import type { TransactionRow, RoutePointRow } from "@/lib/queries";
+import { OrderDetails } from "@/components/order-details";
 import type { RuleRow } from "@/lib/hooks";
 
 function formatDate(d: string) {
@@ -556,6 +557,9 @@ function TransactionsContent() {
   const [splitModal, setSplitModal] = useState<{ transactionId?: number; transactionIds?: number[]; amount?: number; description: string; merchant?: string } | null>(null);
   const [addModal, setAddModal] = useState<{ prefill?: Parameters<typeof AddTransactionModal>[0]["prefill"]; title?: string } | null>(null);
   const [editModal, setEditModal] = useState<TransactionRow | null>(null);
+  // Rows expanded to show the ingested receipt. A set, not a single id: the
+  // point is comparing several orders without losing your place.
+  const [expanded, setExpanded] = useState<Set<number>>(new Set());
   const [showImportModal, setShowImportModal] = useState(false);
   const [paymentModal, setPaymentModal] = useState<TransactionRow | null>(null);
   const [rulePrompt, setRulePrompt] = useState<{
@@ -930,8 +934,8 @@ function TransactionsContent() {
               <tr><td colSpan={11} className="p-8 text-center text-zinc-500">No transactions found</td></tr>
             ) : (
               data.data.map((t) => (
+                <Fragment key={t.id}>
                 <tr
-                  key={t.id}
                   className={`border-b border-zinc-800/50 hover:bg-zinc-900/30 ${
                     selected.has(t.id) ? "bg-zinc-800/40" : ""
                   }`}
@@ -947,7 +951,26 @@ function TransactionsContent() {
                   <td className={`p-2 whitespace-nowrap sticky left-8 z-10 border-r border-zinc-800/80 ${selected.has(t.id) ? "bg-zinc-800" : "bg-zinc-950"}`}>{formatDate(t.transaction_date)}</td>
                   <td className="p-2 whitespace-nowrap text-zinc-500 text-xs">{formatDate(t.created_at)}</td>
                   <td className="p-2 max-w-xs">
+                    <div className="flex items-start gap-1.5">
+                      {t.order_platform && (
+                        // Only where there IS a receipt behind the row. A
+                        // disclosure arrow on every transaction would promise
+                        // detail that mostly does not exist.
+                        <button
+                          onClick={() => setExpanded((prev) => {
+                            const next = new Set(prev);
+                            if (next.has(t.id)) next.delete(t.id); else next.add(t.id);
+                            return next;
+                          })}
+                          className="text-zinc-600 hover:text-zinc-300 leading-none mt-0.5 shrink-0"
+                          title={expanded.has(t.id) ? "Hide receipt" : "Show the receipt this came from"}
+                          aria-expanded={expanded.has(t.id)}
+                        >
+                          {expanded.has(t.id) ? "▾" : "▸"}
+                        </button>
+                      )}
                       <p className="truncate" title={t.description}>{t.description}</p>
+                    </div>
                     {t.notes ? (
                       <p className="truncate text-xs text-zinc-500 italic mt-0.5" title={t.notes}>{t.notes}</p>
                     ) : t.order_platform === "uber" && routeSummary(t.order_route) && (
@@ -1086,6 +1109,15 @@ function TransactionsContent() {
                     </button>
                   </td>
                 </tr>
+                {expanded.has(t.id) && (
+                  <tr className="border-b border-zinc-800/50 bg-zinc-900/40">
+                    <td />
+                    <td colSpan={10} className="px-4 py-3">
+                      <OrderDetails transactionId={t.id} currency={t.currency ?? null} bare />
+                    </td>
+                  </tr>
+                )}
+                </Fragment>
               ))
             )}
           </tbody>

src/components/edit-transaction-modal.tsx

@@ -8,10 +8,9 @@ import {
   useRemoveTransactionTag,
   useTransactionSplits,
   useTrips,
-  useOrderReceipt,
-  type OrderReceipt,
 } from "@/lib/hooks";
 import { SplitModal } from "./split-modal";
+import { OrderDetails } from "./order-details";
 import { CATEGORIES, formatCategory } from "@/lib/categories";
 import type { TransactionRow, TagRow } from "@/lib/queries";
 
@@ -87,89 +86,6 @@ function InlineTags({ transactionId, initialTags }: { transactionId: number; ini
   );
 }
 
-const PLATFORM_LABEL: Record<string, string> = {
-  doordash: "DoorDash",
-  ubereats: "Uber Eats",
-  uber: "Uber",
-};
-
-/**
- * The receipt behind a delivery order: what was actually bought, and where it
- * went. All of it was already stored at ingest and none of it was reachable —
- * the row showed a merchant and a total and nothing else.
- *
- * Read-only on purpose. This is what a provider sent, not something to edit.
- */
-function OrderDetails({ transactionId, currency }: { transactionId: number; currency: string | null }) {
-  const { data: receipt, isLoading } = useOrderReceipt(transactionId);
-  if (isLoading || !receipt) return null;
-
-  const cur = receipt.currency ?? currency ?? "AUD";
-  const fmt = (n: number) => (cur === "AUD" ? `$${n.toFixed(2)}` : `${cur} ${n.toFixed(2)}`);
-  const items: OrderReceipt["line_items"] = receipt.line_items ?? [];
-  const route: OrderReceipt["route"] = receipt.route ?? [];
-
-  return (
-    <div className="border-t border-zinc-800 pt-4">
-      <div className="flex items-baseline justify-between mb-2">
-        <p className="text-xs text-zinc-500">
-          Order details
-          {receipt.platform && (
-            <span className="ml-1.5 text-zinc-400">{PLATFORM_LABEL[receipt.platform] ?? receipt.platform}</span>
-          )}
-        </p>
-        {receipt.card_last4 && (
-          <span className="text-xs text-zinc-600">card ••••{receipt.card_last4}</span>
-        )}
-      </div>
-
-      {items.length > 0 ? (
-        <ul className="space-y-1.5 mb-3">
-          {items.map((it, i) => (
-            <li key={i} className="flex gap-2 text-xs">
-              <span className="text-zinc-600 tabular-nums shrink-0">{it.qty}×</span>
-              <span className="text-zinc-300 flex-1 min-w-0">
-                {it.description}
-                {it.options && it.options.length > 0 && (
-                  <span className="block text-zinc-600">{it.options.join(" · ")}</span>
-                )}
-              </span>
-              <span className="text-zinc-400 tabular-nums shrink-0">{fmt(Number(it.amount))}</span>
-            </li>
-          ))}
-        </ul>
-      ) : (
-        // Uber itemises groceries but not restaurant orders, and orders taken
-        // before this was parsed have none either. Say which, rather than
-        // showing an empty list that reads like a bug.
-        <p className="text-xs text-zinc-600 italic mb-3">
-          No itemised list on this receipt
-        </p>
-      )}
-
-      {route.length > 0 && (
-        <div className="space-y-1">
-          {route.map((pt, i) => (
-            <div key={i} className="flex gap-2 text-xs">
-              <span className="text-zinc-600 shrink-0 w-24">
-                {pt.label}
-                {pt.time && <span className="block text-zinc-700">{pt.time}</span>}
-              </span>
-              <span className="text-zinc-400 flex-1">{pt.address}</span>
-            </div>
-          ))}
-        </div>
-      )}
-
-      {receipt.order_reference && !receipt.order_reference.startsWith("msg:") && (
-        <p className="mt-3 text-[11px] text-zinc-700 font-mono break-all">
-          {receipt.order_reference}
-        </p>
-      )}
-    </div>
-  );
-}
-
 export function EditTransactionModal({
   transaction,
   onClose,

src/components/order-details.tsx

@@ -0,0 +1,95 @@
+"use client";
+
+import { useOrderReceipt, type OrderReceipt } from "@/lib/hooks";
+
+const PLATFORM_LABEL: Record<string, string> = {
+  doordash: "DoorDash",
+  ubereats: "Uber Eats",
+  uber: "Uber",
+};
+
+/**
+ * The receipt behind a delivery order: what was actually bought, and where it
+ * went. All of it was already stored at ingest and none of it was reachable —
+ * the row showed a merchant and a total and nothing else.
+ *
+ * Read-only on purpose. This is what a provider sent, not something to edit.
+ */
+export function OrderDetails({
+  transactionId,
+  currency,
+  bare = false,
+}: {
+  transactionId: number;
+  currency: string | null;
+  /** Drop the top border and heading spacing when embedded in a table row. */
+  bare?: boolean;
+}) {
+  const { data: receipt, isLoading } = useOrderReceipt(transactionId);
+  if (isLoading || !receipt) return null;
+
+  const cur = receipt.currency ?? currency ?? "AUD";
+  const fmt = (n: number) => (cur === "AUD" ? `$${n.toFixed(2)}` : `${cur} ${n.toFixed(2)}`);
+  const items: OrderReceipt["line_items"] = receipt.line_items ?? [];
+  const route: OrderReceipt["route"] = receipt.route ?? [];
+
+  return (
+    <div className={bare ? "" : "border-t border-zinc-800 pt-4"}>
+      <div className="flex items-baseline justify-between mb-2">
+        <p className="text-xs text-zinc-500">
+          Order details
+          {receipt.platform && (
+            <span className="ml-1.5 text-zinc-400">{PLATFORM_LABEL[receipt.platform] ?? receipt.platform}</span>
+          )}
+        </p>
+        {receipt.card_last4 && (
+          <span className="text-xs text-zinc-600">card ••••{receipt.card_last4}</span>
+        )}
+      </div>
+
+      {items.length > 0 ? (
+        <ul className="space-y-1.5 mb-3">
+          {items.map((it, i) => (
+            <li key={i} className="flex gap-2 text-xs">
+              <span className="text-zinc-600 tabular-nums shrink-0">{it.qty}×</span>
+              <span className="text-zinc-300 flex-1 min-w-0">
+                {it.description}
+                {it.options && it.options.length > 0 && (
+                  <span className="block text-zinc-600">{it.options.join(" · ")}</span>
+                )}
+              </span>
+              <span className="text-zinc-400 tabular-nums shrink-0">{fmt(Number(it.amount))}</span>
+            </li>
+          ))}
+        </ul>
+      ) : (
+        // Uber itemises groceries but not restaurant orders, and orders taken
+        // before this was parsed have none either. Say which, rather than
+        // showing an empty list that reads like a bug.
+        <p className="text-xs text-zinc-600 italic mb-3">
+          No itemised list on this receipt
+        </p>
+      )}
+
+      {route.length > 0 && (
+        <div className="space-y-1">
+          {route.map((pt, i) => (
+            <div key={i} className="flex gap-2 text-xs">
+              <span className="text-zinc-600 shrink-0 w-24">
+                {pt.label}
+                {pt.time && <span className="block text-zinc-700">{pt.time}</span>}
+              </span>
+              <span className="text-zinc-400 flex-1">{pt.address}</span>
+            </div>
+          ))}
+        </div>
+      )}
+
+      {receipt.order_reference && !receipt.order_reference.startsWith("msg:") && (
+        <p className="mt-3 text-[11px] text-zinc-700 font-mono break-all">
+          {receipt.order_reference}
+        </p>
+      )}
+    </div>
+  );
+}