fix(analytics): Corregir queries y unificar UI de recomendaciones

Fixes:
- CTR 0%: Cambiar query de IS NULL a HAVING clicks=0 para CTR global real
- Decay content: Aumentar umbral de 3 a 5 clicks para evitar ruido
- Click distribution: Expandir de posiciones 1-5 a 1-10 individual
- Remover URL redundante de tabla Top Posts

UI:
- Convertir 3 secciones de recomendaciones a formato tabla consistente:
  * ACCIÓN URGENTE: Contenido a Crear
  * REVISAR: Títulos con CTR 0%
  * QUICK WINS: Oportunidades Fáciles

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

admin/class-metrics-repository.php

@@ -153,7 +153,8 @@ final class ROI_APU_Metrics_Repository
     }
 
     /**
-     * Get terms with CTR 0% (have results but no clicks)
+     * Get terms with truly 0% CTR (have results but ZERO clicks globally)
+     * Only shows terms where no search instance ever got a click
      *
      * @param int $days Number of days to query
      * @param int $limit Max results
@@ -162,14 +163,18 @@ final class ROI_APU_Metrics_Repository
     public function getCTRZero(int $days = 30, int $limit = 20): array
     {
         try {
-            $sql = "SELECT s.q_term, COUNT(DISTINCT s.id) as busquedas, MAX(s.total_results) as resultados
+            // Get terms with results but 0 total clicks (true 0% CTR)
+            $sql = "SELECT
+                    s.q_term,
+                    COUNT(DISTINCT s.id) as busquedas,
+                    MAX(s.total_results) as resultados,
+                    COUNT(DISTINCT c.id) as clicks
                 FROM {$this->prefix}rcp_paginas_querys s
                 LEFT JOIN {$this->prefix}rcp_paginas_querys_log c ON s.id = c.search_id
                 WHERE s.total_results > 0
-                  AND c.id IS NULL
                   AND s.ts >= DATE_SUB(NOW(), INTERVAL :days DAY)
                 GROUP BY s.q_term
-                HAVING busquedas >= 3
+                HAVING clicks = 0 AND busquedas >= 3
                 ORDER BY busquedas DESC
                 LIMIT :limit";
 
@@ -415,7 +420,7 @@ final class ROI_APU_Metrics_Repository
     }
 
     /**
-     * Get click distribution by position
+     * Get click distribution by position (positions 1-10 individually, 11+ grouped)
      *
      * @param int $days Number of days to query
      * @return array<array{posicion: string, clicks: int, porcentaje: float}>
@@ -430,7 +435,12 @@ final class ROI_APU_Metrics_Repository
                     WHEN position = 3 THEN 'Pos 3'
                     WHEN position = 4 THEN 'Pos 4'
                     WHEN position = 5 THEN 'Pos 5'
-                    ELSE 'Pos 6+'
+                    WHEN position = 6 THEN 'Pos 6'
+                    WHEN position = 7 THEN 'Pos 7'
+                    WHEN position = 8 THEN 'Pos 8'
+                    WHEN position = 9 THEN 'Pos 9'
+                    WHEN position = 10 THEN 'Pos 10'
+                    ELSE 'Pos 11+'
                 END as posicion,
                 COUNT(*) as clicks,
                 ROUND(COUNT(*) * 100.0 / NULLIF((
@@ -456,6 +466,7 @@ final class ROI_APU_Metrics_Repository
 
     /**
      * Get decaying content: posts that lost clicks vs previous period
+     * Only shows posts with significant traffic (≥5 clicks before) to avoid statistical noise
      *
      * @param int $days Number of days to query
      * @param int $limit Max results
@@ -485,7 +496,7 @@ final class ROI_APU_Metrics_Repository
                 GROUP BY post_id
             ) curr ON pa.post_id = curr.post_id
             JOIN {$this->prefix}posts p ON pa.post_id = p.ID
-            WHERE pa.clicks_anterior >= 3
+            WHERE pa.clicks_anterior >= 5
               AND (COALESCE(curr.clicks_actual, 0) - pa.clicks_anterior) * 100.0 / pa.clicks_anterior <= -20
             ORDER BY cambio_pct ASC
             LIMIT :limit";