Add DevToolbox Cheats (productivity tool)

[dominatos]

What does it do?

Universal cross-desktop Linux cheatsheet manager for sysadmins/DevOps with:

• Native KDE Plasma 5/6 widgets
• GNOME Argos panel integration
• Dialog menus for 15+ desktop environments
• 133 production-ready cheatsheets (Docker, K8s, networking, databases)

Why it belongs here

• Real productivity tool for Linux sysadmins
• Cross-desktop compatibility
• Batteries included

Links

• Repo: https://github.com/dominatos/devtoolbox-cheats
• Screenshots: https://github.com/dominatos/devtoolbox-cheats#example-screenshots
• Release: https://github.com/dominatos/devtoolbox-cheats/releases
• MIT License

Summary by Sourcery

Documentation:

• Document DevToolbox Cheats as a recommended productivity tool, highlighting its cross-desktop integration and bundled sysadmin cheatsheets.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

This PR adds a new entry for the DevToolbox Cheats productivity tool to the utilities section of the README, describing its purpose and key desktop integration features.

File-Level Changes

Change	Details	Files
Add DevToolbox Cheats application to the list of utilities in the README	Insert a new bullet entry for DevToolbox Cheats alongside existing tools Link the entry to the GitHub repository for DevToolbox Cheats Provide a concise description summarizing its Linux cheatsheet management capabilities and desktop integrations	README.md

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[sourcery-ai]

Hey - I've left some high level feedback:

• If DevToolbox Cheats is open source, consider adding the [![Open-Source Software][oss icon]] badge to keep the list styling consistent with other OSS entries in this section.
• The description for DevToolbox Cheats is quite long compared to neighboring entries; consider tightening it slightly so it aligns better with the concise one-line summaries used elsewhere in the list.

Prompt for AI Agents

Please address the comments from this code review:

## Overall Comments
- If DevToolbox Cheats is open source, consider adding the `[![Open-Source Software][oss icon]]` badge to keep the list styling consistent with other OSS entries in this section.
- The description for DevToolbox Cheats is quite long compared to neighboring entries; consider tightening it slightly so it aligns better with the concise one-line summaries used elsewhere in the list.

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[dominatos]

Hi @luong-komorebi!

Just submitted DevToolbox Cheats - universal Linux cheatsheet manager with KDE Plasma widgets, GNOME Argos, and 133 production sysadmin cheatsheets.

Would love your feedback! ?