Adding 'auto' option to MaintNotificationsConfig.enabled

[petyaslavova]

Pull Request check-list

Please make sure to review and check all of these items:

• Do tests and lints pass with this change?
• Do the CI tests pass with this change (enable it first in your forked repo and wait for the github action build to finish)?
• Is the new or changed code fully tested?
• Is a documentation update included (if this change modifies existing APIs, or introduces new ones)?
• Is there an example added to the examples folder (if applicable)?

NOTE: these things are not required to open a PR and can be done
afterwards / while the PR is open.

Description of change

disabled: The client doesn’t send the CLIENT MAINT_NOTIFICATIONS ON ... command as part of the handshake. The feature isn’t used by the client.

enabled: The client forcefully sends the CLIENT MAINT_NOTIFICATIONS ON ... command to the server. If the server responds with an error, the connection is interrupted and an error is raised.

auto: The client tries to send the CLIENT MAINT_NOTIFICATIONS ON ... command to the server. If the server returns an error, the client should continue without the push notifications.

[jit-ci]

Hi, I’m Jit, a friendly security platform designed to help developers build secure applications from day zero with an MVS (Minimal viable security) mindset.

In case there are security findings, they will be communicated to you as a comment inside the PR.

Hope you’ll enjoy using Jit.

Questions? Comments? Want to learn more? Get in touch with us.

[Copilot]

Pull Request Overview

This PR adds a new "auto" option to the MaintNotificationsConfig.enabled parameter, expanding the configuration from a simple boolean to support three modes: disabled (False), enabled (True), and auto ("auto"). The auto mode allows the client to attempt maintenance notifications but gracefully continue if the server doesn't support them, rather than failing the connection.

Key changes:

• Updated the enabled parameter type to accept boolean or "auto" string literal
• Modified connection handshake logic to handle auto mode with graceful fallback
• Added comprehensive test coverage for the new handshake behaviors

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
redis/maint_notifications.py	Updates MaintNotificationsConfig.enabled type and default value to support "auto" mode
redis/connection.py	Implements auto mode logic in handshake with graceful error handling for unsupported servers
tests/test_maint_notifications.py	Updates default value test to reflect new "auto" default
tests/test_maint_notifications_handling.py	Adds comprehensive test coverage for handshake scenarios and refactors test structure

---

_{Tip: Customize your code reviews with copilot-instructions.md. Create the file or learn how to get started.}