fix: corregir lang y file_path en frontmatter de funciones existentes

Normaliza lang: typescript → ts en funciones frontend y corrige file_path de functions/infra/ → functions/browser/ en funciones CDP. Actualiza referencias cn_typescript_core → cn_ts_core.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/functions/ui/kpi_card.md

@@ -1,14 +1,14 @@
 ---
 name: kpi_card
 kind: component
-lang: typescript
+lang: ts
 domain: ui
 version: "2.0.0"
 purity: impure
 signature: "KPICard(props: KPICardProps): JSX.Element"
 description: "Card de KPI con label, valor+unidad, delta descriptivo con color semántico, icono, slot de chart inline y action. 3 tamaños."
 tags: [kpi, card, metrics, dashboard, component, ui, sparkline]
-uses_functions: [cn_typescript_core]
+uses_functions: [cn_ts_core]
 uses_types: []
 returns: []
 returns_optional: false
@@ -63,7 +63,7 @@ source_file: "frontend/src/components/ui/kpi-card.tsx"
 ## Ejemplo
 
 ```tsx
-import { KPICard, Sparkline } from '@anthropic/frontend-lib'
+import { KPICard, Sparkline } from '@fn_library'
 
 {/* Básico */}
 <KPICard label="Revenue" value="$12,450" delta={{ value: 12.5, isPositive: true }} />