fix: set base.html as root template name and use ExecuteTemplate

template.New("base.html") makes base.html the root template instead of ""

internal/templates/templates.go

@@ -65,7 +65,8 @@ func (h *Handler) profilePage(w http.ResponseWriter, r *http.Request) {
 	h.render(w, "profile.html", pageData{Title: "Профиль"})
 }
 
-// render executes the named page template.
+// render executes the "base.html" template which {{template "content" .}}
+// pulls in the per-page content block.
 func (h *Handler) render(w http.ResponseWriter, page string, data pageData) {
 	w.Header().Set("Content-Type", "text/html; charset=utf-8")
 	tmpl, ok := h.templates[page]
@@ -74,7 +75,7 @@ func (h *Handler) render(w http.ResponseWriter, page string, data pageData) {
 		http.Error(w, "Template not found", http.StatusInternalServerError)
 		return
 	}
-	if err := tmpl.Execute(w, data); err != nil {
+	if err := tmpl.ExecuteTemplate(w, "base.html", data); err != nil {
 		log.Printf("Template error (%s): %v", page, err)
 		http.Error(w, "Internal Server Error", http.StatusInternalServerError)
 	}
@@ -82,14 +83,14 @@ func (h *Handler) render(w http.ResponseWriter, page string, data pageData) {
 
 // ── Template parsing ───────────────────────────────────────────
 
-// parseTemplates parses each page template individually by cloning the base
+// parseTemplates parses each page template individually by combining the base
-// layout and adding the specific page content. This avoids the issue where
+// layout with the specific page content. This avoids the issue where
 // multiple {{define "content"}} blocks in wildcard-parsed files overwrite
 // each other (last alphabetically wins).
 func (h *Handler) parseTemplates() {
 	pages := []string{"index.html", "login.html", "register.html", "profile.html"}
 	for _, page := range pages {
-		tmpl, err := template.New("").Funcs(template.FuncMap{}).ParseFS(templateFS, "html/base.html", "html/"+page)
+		tmpl, err := template.New("base.html").Funcs(template.FuncMap{}).ParseFS(templateFS, "html/base.html", "html/"+page)
 		if err != nil {
 			log.Printf("Template parse error (%s): %v", page, err)
 			continue