---
id: TASK-89
title: Persist light/dark theme preference across sessions
status: Done
assignee: []
created_date: '2026-03-03 21:59'
labels:
  - UI
  - fix
dependencies: []
priority: medium
---

## Description

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Store user's theme preference so it persists across page reloads and sessions. Uses html[data-theme] attribute with theme.css custom properties for consistent theming.
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## Final Summary

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Fixed theme persistence in 2 commits: initial localStorage-based preference persistence (b77fb30) and html[data-theme] + theme.css custom properties approach (8bd899d).
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