[FEATURE] Implement an Extension System for Modular Features

[arindam-sahoo]

Problem
As KoBar continues to grow, adding all planned features directly into the core application will make it increasingly heavy, potentially impacting performance and overwhelming users who only need the basics.

Proposed Solution
Transition KoBar to a modular architecture by introducing an Extension (or Plugin) system. The core application will be streamlined to include only the essential features required by almost every user. All other specialized or advanced features will be extracted into separate extensions.

Users will be able to browse, download, and manage these extensions directly from the application's Settings, pulling the necessary files dynamically from our official site.

Key Requirements

1. Core Streamlining: Define a strict boundary of what constitutes a "basic" feature and keep only those in the core build.
2. Extension API & Architecture:
   • Create a standardized API/interface that allows extensions to hook into the core KoBar application seamlessly.
   • Implement dynamic loading to load extension files at runtime.
3. Extension Manager (UI): Add a new "Extensions" tab within the Settings menu.
4. Download & Install Mechanism:
   • Allow users to view available extensions from a remote directory/API hosted on our site.
   • Implement secure downloading, installing, enabling, disabling, and uninstalling of extensions.
5. Versioning & Updates: Ensure extensions can be updated independently of the core application.

Benefits

• Lighter Core App: Faster startup times and a smaller initial download size.
• Customizable UX: Users only install (and see) the features they actually care about, reducing UI clutter.
• Scalable Development: We can ship new features independently as extensions without needing to release a new version of the core app.

Implementation Checklist

• Define which existing features will remain in Core vs. moved to Extensions.
• Design the Extension lifecycle (install, load, enable, disable, uninstall).
• Create the Extension API/Hooks for interacting with KoBar's core UI and logic.
• Develop the backend infrastructure to host and serve extension packages.
• Build the "Extensions" UI in the Settings menu.
• Implement the network logic for downloading and unpacking extensions locally.
• Refactor the first non-core feature into an extension as a proof-of-concept.

[arindam-sahoo]

Hi @eedali,
Let me know your views on this.

[eedali]

Hi @eedali, Let me know your views on this.

I was actually thinking the exact same thing! You completely nailed it with the proposed solution and the benefits.

In fact, building this kind of modular extension system was one of the main reasons I decided to make KoBar open-source in the first place. My vision for this is very similar to how ComfyUI operates creating a flexible ecosystem where people can develop, share, and plug in their own custom features.

We can keep the essential core features within the main KoBar repository, and open separate repositories for the individual extensions to keep things organized and community-driven.

However, the most critical aspect we need to focus on is security. We can build a "Store" accessible from the Settings that opens in a separate, dedicated tab within KoBar. We must have a strict distinction between "verified/approved by us" and "unverified/community" extensions. Whenever a user attempts to install an unverified extension, they must explicitly see a warning and grant consent every single time, acknowledging that it hasn't been officially reviewed.

Building the API and Extension Manager is definitely going to be a challenging architectural shift for us, but I believe the end result will be incredibly awesome. Let's start planning the core boundaries and the initial API hooks!