Refactor: Recover middleware now uses RenderError + add full notifications view

- Replaced http.Error with helpers.RenderError in Recover middleware
- Custom 500.html now rendered with layout and topbar on panic
- RenderError gracefully checks template existence and falls back to plain response
- Added /account/notifications full view page (index)
- Linked "Back to notifications" from notification read view
- Fixed typo in template path for notifications/index.html
- Improved layout consistency across error and account pages

helpers/pages.go

@@ -1,24 +1,40 @@
 package helpers
 
-// ToDo should be a handler?
 import (
 	"fmt"
 	"log"
 	"net/http"
-
+	"os"
 	"synlotto-website/models"
 )
 
 func RenderError(w http.ResponseWriter, r *http.Request, statusCode int) {
+	log.Printf("⚙️ RenderError called with status: %d", statusCode)
+
 	context := TemplateContext(w, r, models.TemplateData{})
 
-	page := fmt.Sprintf("templates/error/%d.html", statusCode)
-	tmpl := LoadTemplateFiles(fmt.Sprintf("%d.html", statusCode), page)
+	pagePath := fmt.Sprintf("templates/error/%d.html", statusCode)
+	log.Printf("📄 Checking for template file: %s", pagePath)
+
+	if _, err := os.Stat(pagePath); err != nil {
+		log.Printf("🚫 Template file missing: %s", err)
+		http.Error(w, http.StatusText(statusCode), statusCode)
+		return
+	}
+
+	log.Println("✅ Template file found, loading...")
+
+	tmpl := LoadTemplateFiles(fmt.Sprintf("%d.html", statusCode), pagePath)
 
 	w.WriteHeader(statusCode)
 	err := tmpl.ExecuteTemplate(w, "layout", context)
 	if err != nil {
-		log.Printf("❌ Failed to render error page for %d: %v", statusCode, err)
+		log.Printf("❌ Failed to render error page layout: %v", err)
 		http.Error(w, http.StatusText(statusCode), statusCode)
+		return
 	}
+
+	log.Println("✅ Successfully rendered 500 page")
 }
+
+//ToDo Pages.go /template.go to be merged?