fix(tasks): bypass Invoke PTY for interactive superuser/flush commands (#12078)

* fix(tasks): bypass Invoke PTY for interactive superuser/flush commands

Docker TTY sessions could drop the first keypress and stall at the username prompt when using invoke superuser (and interactive flush).

Run these interactive management commands via direct subprocess stdio instead of Invoke PTY mediation.

Refs #11751.

* chore: remove changelog entry per review

tasks.py

@@ -5,6 +5,7 @@ import json
 import os
 import pathlib
 import re
+import shlex
 import shutil
 import subprocess
 import sys
@@ -17,7 +18,7 @@ from typing import Optional
 
 import invoke
 from invoke import Collection, task
-from invoke.exceptions import UnexpectedExit
+from invoke.exceptions import Exit, UnexpectedExit
 
 
 def safe_value(fnc):
@@ -497,6 +498,43 @@ def manage(c, cmd, pty: bool = False, env=None, verbose: bool = False, **kwargs)
     )
 
 
+def manage_interactive(cmd: str, env=None, verbose: bool = False):
+    """Run a Django management command with inherited stdio.
+
+    This bypasses Invoke PTY mediation and mirrors direct shell usage, which is
+    required for some interactive commands in Docker environments.
+
+    Args:
+        cmd: Django management command and arguments.
+        env: Optional environment variables to add for command execution.
+        verbose: If True, print the resolved command before execution.
+
+    Raises:
+        Exit: If the subprocess returns a non-zero exit code.
+    """
+    args = ['python3', 'manage.py', *shlex.split(cmd)]
+
+    # Keep behavior aligned with `manage`: default to quiet output.
+    if '-v' not in cmd and '--verbosity' not in cmd:
+        args.extend(['-v', '1' if verbose else '0'])
+
+    if verbose:
+        info(f'Running interactive command: {" ".join(args)}')
+
+    cmd_env = dict(os.environ)
+    if env:
+        cmd_env.update(env)
+
+    # Avoid Invoke's PTY stdin mediation for interactive commands; run with
+    # inherited stdio to match direct `manage.py` behavior in Docker TTYs.
+    result = subprocess.run(args, cwd=manage_py_dir(), env=cmd_env, check=False)
+
+    if result.returncode != 0:
+        error(f"ERROR: InvenTree command failed: '{' '.join(args)}'")
+        warning('- Refer to the error messages in the log above for more information')
+        raise Exit(code=result.returncode)
+
+
 def installed_apps(c) -> list[str]:
     """Returns a list of all installed apps, including plugins."""
     result = manage(c, 'list_apps', pty=False, hide=True)
@@ -762,7 +800,7 @@ def shell(c):
 @task
 def superuser(c):
     """Create a superuser/admin account for the database."""
-    manage(c, 'createsuperuser', pty=True)
+    manage_interactive('createsuperuser')
 
 
 @task
@@ -1456,7 +1494,10 @@ def delete_data(c, force: bool = False, migrate: bool = False, verbose: bool = F
     if migrate:
         manage(c, 'migrate --run-syncdb', verbose=verbose)
 
-    manage(c, f'flush{" --noinput" if force else ""}', verbose=verbose)
+    if force:
+        manage(c, 'flush --noinput', verbose=verbose)
+    else:
+        manage_interactive('flush', verbose=verbose)
 
     success('Existing data deleted')