Persist dark background setting too

Description

This issue does not include a description.

Contributor guide

Tech stack

javascripthtmlcss

Domain

frontenddesign

Issue type

feature

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

2

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

1-3 hours

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

mostly clear

Prerequisites

basic JavaScriptunderstanding of localStorage

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

70

Research direction

The issue requests persisting the dark background setting. Look for existing settings persistence in the codebase, likely in a JavaScript file handling user preferences (e.g., a settings module). The current implementation probably saves other settings using localStorage. You will need to add a key for the dark background option and save it whenever the user toggles it. Refer to the existing toggle logic for similar settings to replicate the pattern. Check files like 'src/settings.js' or 'src/preferences.js' for the settings persistence code.