Add deck-stats plugin

[iwsen]

Add Deck Stats to Plugin Store

Per-game playtime tracker for Steam Deck. Automatically detects running games, records sessions to SQLite, and displays stats through a built-in interface.

Features:

• Automatic session tracking via /proc/*/environ polling
• Docked vs handheld time split per session
• Activity heatmap (7×24 grid by day-of-week and hour-of-day)
• Play streaks and milestones (10/25/50/100/250/500/1000 hours)
• Daily/weekly/monthly goals per game or globally
• Session editor — modify, delete, or manually create sessions
• Export/import as JSON
• 10 languages: English, Russian, Chinese, Spanish, Portuguese-BR, German, French, Polish, Turkish, Japanese

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

• Neither testing box is present in your description. Please include one of them per the Markdown comment above the testing section.

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. ❤️

[beebls]

Please update your PR to use the expected PR template

[iwsen]

@beebls Updated the description to match the template.

[beebls]

Code LGTM, approving for testing store and you'll need a properly formatted testing report from a user.

[beebls]

Looks like you don't have a PNPM lockfile, you'll have to fix that (run pnpm import)

[EMERALD0874]

Hi, please explain how you used generative AI when creating this plugin. You did not follow our template, which includes warnings about possible denial due to seemingly AI-generated pull request descriptions. I also see that Claude is a contributor.

[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.