fix: correct light-mode border color in theme

[EmeditWeb]

Problem

The CSS has light theme colors defined (index.css lines 19-29) but --color-border stays at 30 58 82 (dark blue) even in light mode. Many components will look broken in light mode because they were designed for dark theme only.

Root Cause

Light theme was partially implemented but never completed.

What To Build

1. Add proper --color-border for light mode
2. Check all components for light-mode compatibility
3. Consider restricting to dark-only if light theme is not needed

Files To Touch

• src/index.css — fix light mode border color

Acceptance Criteria

• Light mode border color properly set
• Components readable in light mode

Mandatory Checks

• context/ files read
• npm run build passes
• PR references this issue

[Deylan-S]

Hi! I can take care of this quick fix. I'll update the --color-border variable for the light theme in index.css and ensure all components remain readable and visually consistent. Please assign it to me. Thanks!