Fix model issues.

internal/handlers/account/messages/send.go

@@ -53,7 +53,8 @@ func (h *AccountMessageHandlers) SendPost(c *gin.Context) {
 	var in domain.CreateMessageInput
 	if err := c.ShouldBind(&in); err != nil {
 		// Re-render form with validation errors
-		ctx := templateHelpers.TemplateContext(c.Writer, c.Request, models.TemplateData{})
+		data := templateHandlers.BuildTemplateData(app, c.Writer, c.Request)
+		ctx := templateHelpers.TemplateContext(c.Writer, c.Request, data)
 		if f := sm.PopString(c.Request.Context(), "flash"); f != "" {
 			ctx["Flash"] = f
 		}
@@ -98,8 +99,6 @@ func (h *AccountMessageHandlers) SendPost(c *gin.Context) {
 		return
 	}
 
-	// Optional: set a flash message for success (since you already PopString elsewhere)
-	// If you're using scs/v2, Put is available:
 	sm.Put(c.Request.Context(), "flash", "Message sent!")
 
 	// Redirect back to inbox