Inicio: hover-cards on stat tiles

Gasto del ciclo reveals the by-source breakdown, Próximas cuotas the
full active-plan list, Pensión last-period rendimientos per fund.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

frontend/src/components/stat-tile.tsx

@@ -2,6 +2,11 @@ import { Link } from "react-router-dom";
 
 import { cn } from "@/lib/utils";
 import { Card, CardContent, CardHeader, CardTitle } from "@/components/ui/card";
+import {
+  HoverCard,
+  HoverCardContent,
+  HoverCardTrigger,
+} from "@/components/ui/hover-card";
 import { Skeleton } from "@/components/ui/skeleton";
 
 /** Stat-tile contract (dataviz skill): label · value · optional delta ·
@@ -21,6 +26,8 @@ export interface StatTileProps {
   /** Makes the whole tile a link (adds hover border + focus ring). */
   to?: string;
   ariaLabel?: string;
+  /** Extra detail revealed on hover (HoverCard). */
+  hoverContent?: React.ReactNode;
   /** Set false for non-monetary values that shouldn't blur (counts, dates). */
   sensitive?: boolean;
   className?: string;
@@ -35,6 +42,7 @@ export function StatTile({
   children,
   to,
   ariaLabel,
+  hoverContent,
   sensitive = true,
   className,
 }: StatTileProps) {
@@ -83,8 +91,7 @@ export function StatTile({
     </Card>
   );
 
-  if (!to) return card;
-  return (
+  const wrapped = to ? (
     <Link
       to={to}
       aria-label={ariaLabel ?? label}
@@ -92,5 +99,17 @@ export function StatTile({
     >
       {card}
     </Link>
+  ) : (
+    card
+  );
+
+  if (!hoverContent) return wrapped;
+  return (
+    <HoverCard>
+      <HoverCardTrigger render={<div className="h-full" />}>
+        {wrapped}
+      </HoverCardTrigger>
+      <HoverCardContent className="w-80">{hoverContent}</HoverCardContent>
+    </HoverCard>
   );
 }

frontend/src/pages/Inicio.tsx

@@ -25,6 +25,36 @@ import { Skeleton } from "@/components/ui/skeleton";
 
 const CYCLE = currentBudgetCycle();
 
+const SOURCE_LABELS: Record<string, string> = {
+  CREDIT_CARD: "Tarjeta",
+  CASH: "Efectivo",
+  TRANSFER: "Transferencias",
+};
+
+function HoverRows({
+  title,
+  rows,
+}: {
+  title: string;
+  rows: { label: string; value: string }[];
+}) {
+  return (
+    <div className="space-y-1.5">
+      <p className="text-sm font-medium">{title}</p>
+      <div className="space-y-1">
+        {rows.map((r) => (
+          <div key={r.label} className="flex justify-between gap-3 text-xs">
+            <span className="text-muted-foreground truncate">{r.label}</span>
+            <span data-sensitive className="font-mono shrink-0">
+              {r.value}
+            </span>
+          </div>
+        ))}
+      </div>
+    </div>
+  );
+}
+
 function GastoDelCicloCard() {
   const q = useQuery({
     queryKey: ["budget", "month", CYCLE.year, CYCLE.month],
@@ -44,6 +74,25 @@ function GastoDelCicloCard() {
       loading={q.isPending}
       to="/budget"
       ariaLabel="Ver presupuesto"
+      hoverContent={
+        q.data ? (
+          <HoverRows
+            title="Desglose por fuente"
+            rows={[
+              ...q.data.actuals_by_source
+                .filter((s) => s.count > 0)
+                .map((s) => ({
+                  label: `${SOURCE_LABELS[s.source] ?? s.source} (${s.count})`,
+                  value: formatAmount(s.net, "CRC"),
+                })),
+              {
+                label: "Gran total egresos",
+                value: formatAmount(q.data.gran_total_egresos, "CRC"),
+              },
+            ]}
+          />
+        ) : undefined
+      }
     >
       {balance !== null && (
         <p className="text-xs text-muted-foreground">
@@ -105,6 +154,17 @@ function ProximasCuotasCard() {
       loading={q.isPending}
       to="/financiamientos"
       ariaLabel="Ver financiamientos"
+      hoverContent={
+        upcoming.length > 0 ? (
+          <HoverRows
+            title="Planes activos"
+            rows={upcoming.map((p) => ({
+              label: `${p.merchant} (${p.cuotas_billed}/${p.num_installments})`,
+              value: `${formatShortDate(p.next_cuota_date!)} · ${formatAmount(nextCuotaOf(p), p.currency)}`,
+            }))}
+          />
+        ) : undefined
+      }
     >
       {topThree.length > 0 && (
         <ul className="space-y-0.5 text-xs text-muted-foreground">
@@ -146,6 +206,17 @@ function PensionCard() {
       loading={q.isPending}
       to="/pensions"
       ariaLabel="Ver pensiones"
+      hoverContent={
+        q.data && q.data.length > 0 ? (
+          <HoverRows
+            title="Último período por fondo"
+            rows={q.data.map((f) => ({
+              label: `${f.fund} · rendimientos`,
+              value: `+${formatAmount(f.rendimientos, "CRC")}`,
+            }))}
+          />
+        ) : undefined
+      }
     >
       {q.data && q.data.length > 0 && (
         <ul className="space-y-0.5 text-xs text-muted-foreground">