Accounting: fix empty JE/GL pages + nightly Buildium GL pull sync

- Add missing indexes on journal_entry_lines (journal_entry_id, account_id)
  and journal_entries (company_id, date): Bridgewater's ledger query took
  7.5s, blew the 8s statement timeout, and rendered the JE/GL pages empty
- Paginate JE/GL page fetches past the 1000-row PostgREST cap (shared
  fetchJournalEntries helper) and surface query errors instead of
  swallowing them into an empty list
- New buildium-gl-sync edge function (scheduled nightly via pg_cron):
  incrementally pulls new Buildium GL activity into accounting journal
  entries via GET /v1/generalledger, reconstructing double-entry JEs by
  grouping per-account entries by transaction id; watermark + 14-day
  overlap window, dedupe on (company_id, external_source, external_id),
  account mapping by external_id/code/name with auto-create for new
  Buildium accounts

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/pages/accounting/AccountingGeneralLedgerPage.tsx

@@ -2,6 +2,7 @@ import { useQuery, useQueryClient } from "@tanstack/react-query";
 import { useMemo, useState } from "react";
 import { accounting } from "@/lib/accountingClient";
 import { useCompanyId } from "./lib/useCompanyId";
+import { fetchAllJournalEntries } from "./lib/fetchJournalEntries";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
@@ -44,18 +45,12 @@ export default function AccountingGeneralLedgerPage() {
   const [activityOnly, setActivityOnly] = useState(true);
   const [refreshing, setRefreshing] = useState(false);
 
-  const { data: entries = [], isFetching } = useQuery({
+  const { data: entries = [], isFetching, error: entriesError } = useQuery({
     queryKey: ["gl-journal-entries", cid],
     enabled: !!cid,
-    queryFn: async () =>
-      (
-        await accounting
-          .from("journal_entries")
-          .select("id, date, description, reference, journal_entry_lines(debit, credit, account_id, accounts(code, name, type))")
-          .eq("company_id", cid)
-          .order("date", { ascending: true })
-          .order("created_at", { ascending: true })
-      ).data ?? [],
+    queryFn: () =>
+      // Running balances below assume date-ascending order.
+      fetchAllJournalEntries(cid, "id, date, description, reference, journal_entry_lines(debit, credit, account_id, accounts(code, name, type))", { ascending: true }),
   });
 
   const { data: accounts = [] } = useQuery({
@@ -169,6 +164,13 @@ export default function AccountingGeneralLedgerPage() {
   if (!associationId) return <p className="text-sm text-muted-foreground">Select an association.</p>;
   if (companyLoading) return <div className="flex justify-center py-12"><Loader2 className="h-6 w-6 animate-spin text-muted-foreground" /></div>;
   if (companyError || !companyId) return <p className="text-sm text-muted-foreground text-center py-12">{companyError || "Accounting setup is not ready."}</p>;
+  if (entriesError) {
+    return (
+      <p className="text-sm text-destructive text-center py-12">
+        Failed to load the general ledger: {(entriesError as any)?.message || String(entriesError)}
+      </p>
+    );
+  }
 
   return (
     <div className="space-y-6">

src/pages/accounting/AccountingJournalEntriesPage.tsx

@@ -2,6 +2,7 @@ import { useQuery, useQueryClient } from "@tanstack/react-query";
 import { useMemo, useState } from "react";
 import { accounting } from "@/lib/accountingClient";
 import { useCompanyId } from "./lib/useCompanyId";
+import { fetchAllJournalEntries } from "./lib/fetchJournalEntries";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
@@ -39,18 +40,10 @@ export default function AccountingJournalEntriesPage() {
   const [saving, setSaving] = useState(false);
   const [editingId, setEditingId] = useState<string | null>(null);
 
-  const { data: entries = [] } = useQuery({
+  const { data: entries = [], error: entriesError } = useQuery({
     queryKey: ["journal-entries", cid],
     enabled: !!cid,
-    queryFn: async () =>
-      (
-        await accounting
-          .from("journal_entries")
-          .select("*, journal_entry_lines(*, accounts(name, code))")
-          .eq("company_id", cid)
-          .order("date", { ascending: false })
-          .order("created_at", { ascending: false })
-      ).data ?? [],
+    queryFn: () => fetchAllJournalEntries(cid, "*, journal_entry_lines(*, accounts(name, code))"),
   });
 
   const { data: accounts = [] } = useQuery({
@@ -186,6 +179,13 @@ export default function AccountingJournalEntriesPage() {
   if (!associationId) return <p className="text-sm text-muted-foreground">Select an association.</p>;
   if (companyLoading) return <div className="flex justify-center py-12"><Loader2 className="h-6 w-6 animate-spin text-muted-foreground" /></div>;
   if (companyError || !companyId) return <p className="text-sm text-muted-foreground text-center py-12">{companyError || "Accounting setup is not ready."}</p>;
+  if (entriesError) {
+    return (
+      <p className="flex items-center justify-center gap-2 text-sm text-destructive py-12">
+        <AlertCircle className="h-4 w-4" /> Failed to load journal entries: {(entriesError as any)?.message || String(entriesError)}
+      </p>
+    );
+  }
 
   return (
     <div className="space-y-6">

src/pages/accounting/lib/fetchJournalEntries.ts

@@ -0,0 +1,32 @@
+import { accounting } from "@/lib/accountingClient";
+
+// PostgREST caps each response at 1000 rows, so companies with more journal
+// entries than that (e.g. Buildium-imported books) were silently truncated —
+// and a query error (statement timeout) used to be swallowed into an empty
+// list. Page through all entries on a stable key and throw on error so
+// react-query surfaces failures instead of rendering an empty ledger.
+const PAGE = 1000;
+
+export async function fetchAllJournalEntries(
+  cid: string,
+  select: string,
+  opts: { ascending?: boolean } = {},
+): Promise<any[]> {
+  const ascending = opts.ascending ?? false;
+  const out: any[] = [];
+  for (let offset = 0; ; offset += PAGE) {
+    const { data, error } = await accounting
+      .from("journal_entries")
+      .select(select)
+      .eq("company_id", cid)
+      .order("date", { ascending })
+      .order("created_at", { ascending })
+      .order("id", { ascending: true })
+      .range(offset, offset + PAGE - 1);
+    if (error) throw error;
+    const rows = (data ?? []) as any[];
+    out.push(...rows);
+    if (rows.length < PAGE) break;
+  }
+  return out;
+}