fix: cohort CAC/ROAS desde deals Clientify y más contraste en dashboards

Los totales de Métricas usaban solo ad_daily (cohort a 0). Ahora suman
deals won; selectores y tipografía ganan contraste sobre fondo blanco.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/lib/metrics.ts

@@ -402,6 +402,83 @@ export function metricTotalsFromDaily(rows: AdDailyRow[]): MetricTotals {
   };
 }
 
+/** Won Clientify deals — source of truth for cohort CAC / revenue / ROAS. */
+export type DealWonRow = {
+  amount?: number | null;
+  won_at?: string | null;
+  stage?: string | null;
+  tenant_id?: string | null;
+};
+
+export function filterDealsForRange(
+  deals: DealWonRow[],
+  since: string | null,
+  until: string | null
+): DealWonRow[] {
+  const won = deals.filter((d) => !d.stage || d.stage === 'won');
+  if (!since || !until) return won;
+  return won.filter((d) => {
+    const day = (d.won_at || '').slice(0, 10);
+    if (!day) return false;
+    return day >= since && day <= until;
+  });
+}
+
+/** Overlay CRM won deals onto ad spend/leads totals. */
+export function withCohortFromDeals(
+  base: MetricTotals,
+  deals: DealWonRow[]
+): MetricTotals {
+  const dealCount = deals.length;
+  const revenue = deals.reduce((a, d) => a + n(d.amount), 0);
+  return {
+    ...base,
+    deals: dealCount,
+    revenue,
+    cac: dealCount > 0 ? base.spend / dealCount : 0,
+    roas: base.spend > 0 ? revenue / base.spend : 0,
+  };
+}
+
+/**
+ * Inject won-deal cohort into weekly rows so WoW/MoM/YoY include CRM closes.
+ * Ads sync leaves cohort_* at 0; without this, CAC/ROAS deltas stay empty.
+ */
+export function mergeDealsIntoWeekly(
+  weekly: KpiWeeklyRow[],
+  deals: DealWonRow[]
+): KpiWeeklyRow[] {
+  const byWeek = new Map<string, { deals: number; revenue: number }>();
+  for (const d of deals) {
+    if (d.stage && d.stage !== 'won') continue;
+    const day = (d.won_at || '').slice(0, 10);
+    if (!day) continue;
+    const dt = new Date(`${day}T00:00:00Z`);
+    if (Number.isNaN(dt.getTime())) continue;
+    const week = isoDate(weekStart(dt));
+    const cur = byWeek.get(week) || { deals: 0, revenue: 0 };
+    cur.deals += 1;
+    cur.revenue += n(d.amount);
+    byWeek.set(week, cur);
+  }
+  if (!byWeek.size) return weekly;
+
+  const out = weekly.map((r) => ({ ...r }));
+  for (const [week, v] of byWeek) {
+    out.push({
+      week: `${week}T00:00:00+00:00`,
+      channel: 'crm',
+      total_spend: 0,
+      total_leads: 0,
+      cohort_deals_won: v.deals,
+      cohort_revenue_won: Math.round(v.revenue * 100) / 100,
+      cac_cohort: 0,
+      roas_cohort: 0,
+    });
+  }
+  return out;
+}
+
 /** CRM lead row used for channel attribution cross. */
 export type CrmLeadRow = {
   source?: string | null;