0.4.0-standalone.9: plugin updater restored

Maintenance prerelease of the SteamOS A/B adaptation, with the built-in plugin updater restored.

Changes

• Restore plugin update checks, startup notifications and the release picker. Decky Loader continues to handle installation and reload.
• Configure the update source from the publishing repository. Upstream releases use the author's repository; fork releases use the fork.
• Keep plugin installation from Settings unavailable while driver status is unknown or a driver operation is running.
• Restore the original README structure, badges and screenshots, with focused corrections for A/B installation. Move the extended explanation to docs/steamos-ab.md.
• Keep compressed A/B driver preparation and the existing support for root partitions without enlarging them to 8 GiB.

Updating from standalone.8

The previous standalone.8 build has plugin self-updates disabled. Install the attached decky-nvidia-update-v0.4.0-standalone.9.zip manually through Decky Loader's ZIP installer. The source-code archives are not installable plugin bundles. A SHA-256 checksum file is included.

In this build, prereleases are available in the manual release picker; automatic update checks follow the latest stable release. This release remains a prerelease.

Validation

• 44 backend tests passed, including update discovery, repository selection, offline failures and driver-job recovery.
• Frontend tests for plugin updates, Decky installer handoff, driver filtering and dropdown geometry passed.
• TypeScript, Bash syntax checks and the production frontend build passed.
• The release ZIP was checked against all 37 payload files and contains matching version metadata and the restored updater.

The driver backend is unchanged from standalone.8, which installed and booted NVIDIA 615.78.08 on the tested 5 GiB SteamOS system. A complete plugin installation/reload through Decky and broader hardware and SteamOS-update coverage remain to be verified.

Original plugin by moi952. SteamOS A/B adaptation and this release by 60plus.

0.4.0-standalone.8: SteamOS A/B edition

Standalone SteamOS adaptation of the original Decky NVIDIA Update plugin, published for testing and upstream review.

Changes

• Prepare NVIDIA drivers in the inactive SteamOS A/B slot, with compressed staging and rollback. No fixed 8 GiB root requirement or partition resize.
• Include the controller, isolated package builder and OS repair runtime. No separate NVIDIA installer is required.
• Preserve the recognized steamos-nvidia update hook and existing driver settings.
• Offer Arch packages and additional NVIDIA versions, with clear source/channel labels, driver counts and an eight-entry scrollable picker.
• Fix the temporary Btrfs and /etc overlay cleanup failure.

Install

Install the attached plugin ZIP through Decky Loader's "Install Plugin from ZIP" option. The SHA-256 file is included. The source-code archives are not installable plugin bundles.

Validation and limits

39 Python tests, frontend filter/geometry checks, TypeScript, Bash syntax and a clean frontend build passed. Driver 615.78.08 was installed and booted on an RTX 5060 PC running SteamOS 3.8.28 with a 5 GiB root slot.

Additional NVIDIA packages were built, but their installation/reboot and a subsequent SteamOS update have not yet been validated. Other hardware and OS versions need testing. This is a development prerelease; see the README for supported layouts and checks.

Original plugin by moi952. Standalone adaptation by 60plus, based on the staging method from 28allday/steamos-nvidia-installer.