Cleanup: Finalize template context integration and remove legacy code

- Replaced legacy TemplateContext calls with structured TemplateData usage
- Removed unused variables and redundant storage calls in notifications handler
- Ensured consistent use of BuildTemplateData across user-facing handlers
- Resolved all compile-time errors from refactor
- Ready for runtime testing and further layout integration

handlers/admin/audit.go

@@ -20,7 +20,7 @@ type AdminLogEntry struct {
 
 func AdminAccessLogHandler(db *sql.DB) http.HandlerFunc {
 	return middleware.Auth(true)(func(w http.ResponseWriter, r *http.Request) {
-		context := helpers.TemplateContext(w, r)
+		context := helpers.TemplateContext(w, r, models.TemplateData{})
 
 		rows, err := db.Query(`
 			SELECT accessed_at, user_id, path, ip, user_agent
@@ -56,7 +56,7 @@ func AdminAccessLogHandler(db *sql.DB) http.HandlerFunc {
 
 func AuditLogHandler(db *sql.DB) http.HandlerFunc {
 	return middleware.Auth(true)(func(w http.ResponseWriter, r *http.Request) {
-		context := helpers.TemplateContext(w, r)
+		context := helpers.TemplateContext(w, r, models.TemplateData{})
 
 		rows, err := db.Query(`
 			SELECT timestamp, user_id, action, ip, user_agent

handlers/admin/dashboard.go

@@ -20,7 +20,7 @@ func AdminDashboardHandler(db *sql.DB) http.HandlerFunc {
 
 		// TODO: check is_admin from users table here
 
-		context := helpers.TemplateContext(w, r)
+		context := helpers.TemplateContext(w, r, models.TemplateData{})
 
 		// Total ticket stats
 		var total, winners int

handlers/admin/draws.go

@@ -12,7 +12,7 @@ import (
 
 func NewDrawHandler(db *sql.DB) http.HandlerFunc {
 	return helpers.AuthMiddleware(func(w http.ResponseWriter, r *http.Request) {
-		context := helpers.TemplateContext(w, r)
+		context := helpers.TemplateContext(w, r, models.TemplateData{})
 
 		if r.Method == http.MethodPost {
 			game := r.FormValue("game_type")
@@ -75,7 +75,7 @@ func DeleteDrawHandler(db *sql.DB) http.HandlerFunc {
 
 func ListDrawsHandler(db *sql.DB) http.HandlerFunc {
 	return helpers.AuthMiddleware(func(w http.ResponseWriter, r *http.Request) {
-		context := helpers.TemplateContext(w, r)
+		context := helpers.TemplateContext(w, r, models.TemplateData{})
 		draws := []models.DrawSummary{}
 
 		rows, err := db.Query(`

handlers/admin/manualtriggers.go

@@ -10,12 +10,13 @@ import (
 	"strconv"
 
 	"synlotto-website/helpers"
+	"synlotto-website/models"
 	services "synlotto-website/services/tickets"
 )
 
 func AdminTriggersHandler(db *sql.DB) http.HandlerFunc {
 	return func(w http.ResponseWriter, r *http.Request) {
-		context := helpers.TemplateContext(w, r)
+		context := helpers.TemplateContext(w, r, models.TemplateData{})
 
 		// Inject flash message if available
 		if flash := r.URL.Query().Get("flash"); flash != "" {

handlers/admin/prizes.go

@@ -7,6 +7,7 @@ import (
 	"net/http"
 	"strconv"
 	"synlotto-website/helpers"
+	"synlotto-website/models"
 )
 
 func AddPrizesHandler(db *sql.DB) http.HandlerFunc {
@@ -16,7 +17,7 @@ func AddPrizesHandler(db *sql.DB) http.HandlerFunc {
 				"templates/layout.html",
 				"templates/admin/draws/prizes/add_prizes.html",
 			))
-			tmpl.ExecuteTemplate(w, "layout", helpers.TemplateContext(w, r))
+			tmpl.ExecuteTemplate(w, "layout", helpers.TemplateContext(w, r, models.TemplateData{}))
 			return
 		}
 
@@ -50,7 +51,7 @@ func ModifyPrizesHandler(db *sql.DB) http.HandlerFunc {
 				"templates/layout.html",
 				"templates/admin/draws/prizes/modify_prizes.html",
 			))
-			tmpl.ExecuteTemplate(w, "layout", helpers.TemplateContext(w, r))
+			tmpl.ExecuteTemplate(w, "layout", helpers.TemplateContext(w, r, models.TemplateData{}))
 			return
 		}