fix: active sidebar link text is invisible in docs dark theme

[anurag629]

Bug

The active/current page link in the Starlight docs sidebar has nearly invisible text in dark mode. The text color blends into the selection highlight background, making it unreadable.

Page: Any docs page (e.g., /getting-started/quick-start/)

Where to fix

File: website/src/styles/starlight-overrides.css

The active sidebar link uses Starlight's built-in [aria-current='page'] styling. The text color needs to be overridden to ensure contrast against the highlight background in dark mode.

Look for the sidebar link styles and ensure the active state has a visible text color (e.g., var(--sl-color-white) or #ffffff) against its background.

Acceptance Criteria

• Active sidebar link text is clearly readable in dark mode
• Non-active sidebar links remain unchanged
• Light mode (if supported) is not broken