What is the 'Neural Link'?

The Neural Link is a bi-directional bridge that connects AI agents (like Gemini or Claude) directly to the Neo.mjs runtime. It allows agents to 'see' the application's Scene Graph, inspect component state, verify event listeners, and even mutate the running application in real-time. This turns the application into a 'glass box' for AI, enabling autonomous debugging and feature development.

Why is Neo.mjs called an 'Application Engine' instead of a framework?

Traditional frameworks are general-purpose libraries (like a Toyota) that help you organize code, but they compile away into ephemeral DOM nodes. Neo.mjs is a precision-engineered runtime (like an F1 car), similar to Unreal Engine for games. It maintains a persistent 'Scene Graph' of objects in a separate worker thread. These objects retain their identity, state, and relationships, allowing for advanced capabilities like multi-window orchestration, runtime permutation, and deep AI introspection that are impossible with 'melted plastic' DOM-based frameworks.

What is 'Context Engineering'?

Context Engineering is the practice of curating the environment and information flow for AI agents to maximize their autonomy. In Neo.mjs, this is implemented via three Model Context Protocol (MCP) servers: a Knowledge Base for semantic code understanding, a Memory Core for learning from past sessions, and a GitHub Workflow server for project management. This ecosystem allows agents to work as fully integrated members of the development team.

What is 'Object Permanence' in the context of Neo.mjs?

In Neo.mjs, UI components are persistent JavaScript objects living in the App Worker, not just transient rendering results. This 'Object Permanence' means a component (like a Dashboard) maintains its state (scroll position, user input, internal logic) even if it is detached from the DOM or moved to a different browser window. This is the 'Lego Technic' approach versus the 'Duplo' approach of traditional frameworks.

What is an 'Agent Operating System'?

Neo.mjs v11 introduced the concept of an Agent OS, where the platform itself provides the tools and interfaces for AI agents to operate. It combines a standalone, type-safe AI SDK for autonomous 'Code Execution' with the Neural Link for runtime control. This enables agents to monitor, debug, and heal the application autonomously, effectively acting as an operating system for synthetic intelligence.

How does Neo.mjs handle multi-window applications?

Neo.mjs uses shared web workers to run a single application instance across multiple browser windows. All windows share the same application state and data in real-time. Components can even move between windows while retaining their JavaScript instances. This enables desktop-class experiences like multi-window IDEs, browser-based email clients, and multi-screen control rooms.

What makes Neo.mjs different from React, Angular, or Vue?

Neo.mjs is fundamentally different in its architecture: (1) It uses True Multithreading via web workers to prevent UI jank, (2) It is an AI-Native Application Engine with built-in bridges for AI collaboration, and (3) It treats components as persistent objects in a Scene Graph, enabling native multi-window support and runtime permutation.

Frontmatter

id	9504
title	List: Fix vertical scrollbar visibility and contrast
state	Closed
labels	bugai
assignees	tobiu
createdAt	Mar 17, 2026, 8:25 PM
updatedAt	Mar 17, 2026, 8:27 PM
githubUrl	https://github.com/neomjs/neo/issues/9504
author	tobiu
commentsCount	1
parentIssue	null
subIssues	[]
subIssuesCompleted	0
subIssuesTotal	0
blockedBy	[]
blocking	[]
closedAt	Mar 17, 2026, 8:27 PM

List: Fix vertical scrollbar visibility and contrast

Name: Neo.mjs Application Engine
Author: Neo.mjs

Closed v12.1.0 bugai

tobiu commented on Mar 17, 2026, 8:25 PM

Problem:

In Portal.view.examples.List (and other lists using useWrapperNode), the vertical scrollbar was getting pushed outside the visible area if the wrapper had padding. This occurred because .neo-list.neo-use-wrapper-node used position: absolute; width: 100%; height: 100%;, which expands to the wrapper's padding box size but starts at the static position (inside the padding), causing an overflow on the right/bottom.
The scrollbar was not aware of the background color context, causing poor contrast in dark themes.

Solution:

Replaced width: 100%; height: 100%; with inset: 0; in src/list/Base.scss for .neo-use-wrapper-node. This forces the list to exactly match the padding edge of the wrapper without overflowing.
Introduced the --list-scrollbar-color-scheme CSS variable in all themes (dark/light) and applied it via color-scheme on .neo-list to ensure native scrollbars have the correct contrast against the background.

tobiu assigned to @tobiu on Mar 17, 2026, 8:25 PM

tobiu added the bug label on Mar 17, 2026, 8:25 PM

tobiu added the ai label on Mar 17, 2026, 8:25 PM

tobiu referenced in commit e031130 - "style(list): Fix vertical scrollbar visibility and contrast (#9504)" on Mar 17, 2026, 8:27 PM

tobiu Mar 17, 2026, 8:27 PM

Fixed via e03113020.

tobiu closed this issue on Mar 17, 2026, 8:27 PM