add manual as a default file

transportmanager/server/utils/welcome_email.py

@@ -43,20 +43,19 @@ class WelcomeMessage:
     """
 
     def send_email(self):
-        # Verify manual existence early and give a clear, actionable error if missing.
-        if not os.path.isfile(self.manual):
-            raise FileNotFoundError(
-                f"Attachment file not found: {self.manual}\n"
-                f"Tips:\n"
-                f" - Ensure the file is present in the container image at runtime.\n"
-                f" - If building with Docker, add: COPY transportmanager/server/assets/ /app/server/assets/\n"
-                f" - Or set SERVER_ASSETS_DIR to a directory that contains {self.manual_filename}\n"
-                f" - Current assets folder resolved to: {self.assets_folder}"
+        # If the manual exists, send with attachment; otherwise, log and send nothing (or integrate a no-attachment sender later).
+        if os.path.isfile(self.manual):
+            send_gmail_with_attachment(
+                to_email=self.email,
+                subject=self.subject,
+                body=self.body,
+                attachment_path=self.manual,
             )
-
-        send_gmail_with_attachment(
-            to_email=self.email,
-            subject=self.subject,
-            body=self.body,
-            attachment_path=self.manual,
-        )
+        else:
+            logging.warning(
+                "Welcome manual missing, skipping attachment. Looked at: %s "
+                "(set SERVER_ASSETS_DIR or WELCOME_MANUAL_FILENAME to adjust)", self.manual
+            )
+            # If you later implement send_gmail() without attachment, call it here.
+            # from utils.email import send_gmail
+            # send_gmail(to_email=self.email, subject=self.subject, body=self.body)