feat: KPIs con totales absolutos, backfill ads y ventas en cruce canal

Comparativas WoW/MoM/YoY muestran prev/Δ además del %; sync ads admite
histórico desde 2025; tabla ads↔CRM añade cierres, ventas y ROAS.

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

src/components/ClientIntegrationsPanel.tsx

@@ -16,7 +16,7 @@ type Integ = {
   meta?: { folder_name?: string; match_score?: number } | null;
 };
 
-type Provider = { id: string; label: string; group: string };
+type Provider = { id: string; label: string; group: string; live?: boolean };
 
 const PLACEHOLDERS: Record<string, string> = {
   meta_ads: 'act_… (Ad Account ID)',
@@ -219,6 +219,11 @@ export default function ClientIntegrationsPanel({
                       <div>
                         <p className="text-sm font-medium text-gray-900">
                           {p.label}
+                          {p.live === false && (
+                            <span className="ml-2 text-[10px] font-normal text-gray-500">
+                              (sin conector API aún)
+                            </span>
+                          )}
                         </p>
                         {folderHint && (
                           <p className="text-[11px] text-brand-700 mt-0.5">