feat: Add Analytics, Odoo Integration, A/B Testing, and Content features

Phase 1 - Analytics y Reportes:
- PostMetrics and AnalyticsReport models for tracking engagement
- Analytics service with dashboard stats, top posts, optimal times
- 8 API endpoints at /api/analytics/*
- Interactive dashboard with Chart.js charts
- Celery tasks for metrics fetch (15min) and weekly reports

Phase 2 - Integración Odoo:
- Lead and OdooSyncLog models for CRM integration
- Odoo fields added to Product and Service models
- XML-RPC service for bidirectional sync
- Lead management API at /api/leads/*
- Leads dashboard template
- Celery tasks for product/service sync and lead export

Phase 3 - A/B Testing y Recycling:
- ABTest, ABTestVariant, RecycledPost models
- Statistical winner analysis using chi-square test
- Content recycling with engagement-based scoring
- APIs at /api/ab-tests/* and /api/recycling/*
- Automated test evaluation and content recycling tasks

Phase 4 - Thread Series y Templates:
- ThreadSeries and ThreadPost models for multi-post threads
- AI-powered thread generation
- Enhanced ImageTemplate with HTML template support
- APIs at /api/threads/* and /api/templates/*
- Thread scheduling with reply chain support

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

app/api/routes/dashboard.py

@@ -180,3 +180,29 @@ async def dashboard_settings(request: Request, db: Session = Depends(get_db)):
         "request": request,
         "user": user.to_dict()
     })
+
+
+@router.get("/analytics", response_class=HTMLResponse)
+async def dashboard_analytics(request: Request, db: Session = Depends(get_db)):
+    """Página de analytics."""
+    user = require_auth(request, db)
+    if not user:
+        return RedirectResponse(url="/login", status_code=302)
+
+    return templates.TemplateResponse("analytics.html", {
+        "request": request,
+        "user": user.to_dict()
+    })
+
+
+@router.get("/leads", response_class=HTMLResponse)
+async def dashboard_leads(request: Request, db: Session = Depends(get_db)):
+    """Página de leads."""
+    user = require_auth(request, db)
+    if not user:
+        return RedirectResponse(url="/login", status_code=302)
+
+    return templates.TemplateResponse("leads.html", {
+        "request": request,
+        "user": user.to_dict()
+    })