coder/cmux
Feb 2026 – Mar 2026
2 Months active
Languages Used
CSSJSONJavaScriptTypeScript
Technical Skills
CSSReactUI testingUI/UX designanimationcontext API
Jaayden Halko
PROFILE
Jaayden Halko
Over a two-month period, contributed to the coder/cmux repository by delivering nine features and resolving UI stability issues focused on user experience and developer efficiency. Work included building a persistent, resizable sidebar with layout protection, migrating settings to a route-based full-page interface with deep-linking, and optimizing onboarding flows to prevent user dead-ends. Enhanced mobile responsiveness and animation performance using CSS, React, and Lottie, while implementing automated UI tests for layout stability. Additionally, overhauled the Agent UI for clearer interactions and migrated Storybook stories to component-level, reducing build times and snapshot noise. Used JavaScript, TypeScript, and Storybook throughout development.
Overall Statistics
Feature vs Bugs
90%Features
Repository Contributions
22Total
Bugs
1
Commits
22
Features
9
Lines of code
29,588
Activity Months2
Your Network
51 peopleWork History
March 2026
13 Commits • 5 Features
Mar 1, 2026March 2026 delivered a focused set of UX enhancements in the Agent UI and a broad, performance-oriented overhaul of Storybook story infrastructure for coder/cmux. Key outcomes include clearer agent-management interactions, faster development feedback, and a maintainable migration path to component-level stories that reduce build times and snapshot noise.
13 Commits • 5 Features
Mar 1, 2026March 2026 delivered a focused set of UX enhancements in the Agent UI and a broad, performance-oriented overhaul of Storybook story infrastructure for coder/cmux. Key outcomes include clearer agent-management interactions, faster development feedback, and a maintainable migration path to component-level stories that reduce build times and snapshot noise.
March 2026
February 2026
9 Commits • 4 Features
Feb 1, 2026February 2026 monthly summary for coder/cmux highlighting key features delivered, bugs fixed, and impact. Delivered a set of UX enhancements and stability fixes that improve business value and developer velocity. Major work includes: 1) persistent left sidebar with resize capability and safe right sidebar clamping; 2) Settings migrated from modal to route-based full-page experience with stable navigation and deep-linking; 3) onboarding pause for API key configuration to avoid dead-ends; 4) mobile and input stability improvements for narrow viewports; 5) animation performance optimization via Lottie and preloading; 6) mobile text selection suppression on coarse pointers to improve touch UX. These changes reduce friction, improve consistency, and enable faster feature delivery.
February 2026
9 Commits • 4 Features
Feb 1, 2026February 2026 monthly summary for coder/cmux highlighting key features delivered, bugs fixed, and impact. Delivered a set of UX enhancements and stability fixes that improve business value and developer velocity. Major work includes: 1) persistent left sidebar with resize capability and safe right sidebar clamping; 2) Settings migrated from modal to route-based full-page experience with stable navigation and deep-linking; 3) onboarding pause for API key configuration to avoid dead-ends; 4) mobile and input stability improvements for narrow viewports; 5) animation performance optimization via Lottie and preloading; 6) mobile text selection suppression on coarse pointers to improve touch UX. These changes reduce friction, improve consistency, and enable faster feature delivery.
Activity
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Quality Metrics
Correctness98.2%
Maintainability91.8%
Architecture92.8%
Performance90.8%
AI Usage71.8%
Skills & Technologies
Programming Languages
CSSJSONJavaScriptTypeScript
Technical Skills
CSSReactStorybookUI testingUI/UX designanimationcontext APIfront end developmentfull stack developmenttesting
Repositories Contributed To
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