Add Docky plugin

[datbird]

Add Docky to Plugin Store

Docky is a Steam Deck automation plugin on a Task ‚ Action ‚ Mode model, run manually or by triggers (dock/undock, AC power, controller connect, resume, startup). It ships built-in dock fixes (docked-audio sink switch, controller order, gamescope composition/stretch, TDP cap), a temp‚ RPM fan-control engine with named profiles, and full Sunshine game-streaming control.

How it differs from decky-sunshine: decky-sunshine only starts/stops Sunshine. Docky is a broader automation framework whose Sunshine support is one integrated Action ‚it can drive Sunshine directly or defer to decky-sunshine ‚ and adds self-healing mDNS discovery, capture-health recovery, and Sunshine‚ Desktop GPU coexistence not offered elsewhere.

Root disclosure: Docky declares flags:["root"]. For Sunshine KMS capture, it creates a setuid-root copy of the system's own bwrap under /var/lib/docky (root-owned chain; /tmp and /run are nosuid on SteamOS). Rationale and the security hardening (TOCTOU guards, clean_env, subprocess timeouts) are in docs/design-notes.md and docs/decky-integration.md. It bundles no third-party binaries ‚ the backend is pure Python, the frontend builds from source.

Repo: https://github.com/datbird/docky (v1.4.7)

Task Checklist

Developer

• I am the original author or an authorized maintainer of this plugin.
• I have abided by the licenses of the libraries I am utilizing, including attaching license notices where appropriate.
• Generative AI was NOT used to write a majority of the code I am submitting.

Plugin

• I have verified that my plugin works properly on the Stable and Beta update channels of SteamOS.
• I have verified my plugin is unique or provides more/alternative functionality to a plugin already on the store.

Backend

• No: I am using a custom backend other than Python.
• No: I am using a tool or software from a 3rd party FOSS project that does not have it's dependencies statically linked.
• No: I am using a custom binary that has all of it's dependencies statically linked.

Community

• I have tested and left feedback on two other pull requests for new or updating plugins.
• I have commented links to my testing report in this PR.

Testing

• Tested by a third party on SteamOS Stable or Beta update channel.

[github-actions]

Issues Found

No issues with your PR description were found.

Next Steps

1. If we found any issues above, please edit your pull request description to resolve them and leave a comment saying you've done so.
2. For the quickest review, please see the Community section of the pull request template for how you can help other developers.
3. Once your description is correct, a maintainer will review your pull request as soon as possible.

Thank you for your contribution! If you need any help, please reach out on our Discord server. ❤️

[github-actions]

This pull request is stale as no updates or testing reports have been posted within the last 7 days. Please ensure you are actively recruiting testers or resolving the issues discussed. If you do not remove the stale label or comment, this will be closed in 7 days. Please close this pull request if you need more time to resolve issues so we can keep our repo healthy.

[github-actions]

Your pull request has been closed for being stale. If you want to resubmit a plugin pull request, please ensure you have a tester for your plugin and have resolved all issues discussed.