Added full message handling system with archive view, pagination, and send support

- Implemented message inbox and archived messages view
- Added pagination logic to both inbox and archive handlers
- Integrated message sending functionality with CSRF protection
- Updated schema to include `archived_at` timestamp
- Included archive button and logic with feedback flash messaging
- Fixed message dropdown routing and rendering in topbar
- Cleaned up template load paths and error handling

storage/messages.go

@@ -85,8 +85,45 @@ func MarkMessageAsRead(db *sql.DB, messageID, userID int) error {
 func ArchiveMessage(db *sql.DB, userID, messageID int) error {
 	_, err := db.Exec(`
 		UPDATE users_messages
-		SET is_archived = TRUE
+		SET is_archived = TRUE, archived_at = CURRENT_TIMESTAMP
 		WHERE id = ? AND recipientId = ?
 	`, messageID, userID)
 	return err
 }
+
+func SendMessage(db *sql.DB, senderID, recipientID int, subject, message string) error {
+	_, err := db.Exec(`
+		INSERT INTO users_messages (senderId, recipientId, subject, message)
+		VALUES (?, ?, ?, ?)
+	`, senderID, recipientID, subject, message)
+	return err
+}
+
+func GetArchivedMessages(db *sql.DB, userID int, page, perPage int) []models.Message {
+	offset := (page - 1) * perPage
+	rows, err := db.Query(`
+		SELECT id, senderId, recipientId, subject, message, is_read, created_at, archived_at
+		FROM users_messages
+		WHERE recipientId = ? AND is_archived = TRUE
+		ORDER BY archived_at DESC
+		LIMIT ? OFFSET ?
+	`, userID, perPage, offset)
+	if err != nil {
+		return nil
+	}
+	defer rows.Close()
+
+	var messages []models.Message
+	for rows.Next() {
+		var m models.Message
+		err := rows.Scan(
+			&m.ID, &m.SenderId, &m.RecipientId,
+			&m.Subject, &m.Message, &m.IsRead,
+			&m.CreatedAt, &m.ArchivedAt,
+		)
+		if err == nil {
+			messages = append(messages, m)
+		}
+	}
+	return messages
+}