Fix bug with board rendering

[HappyPaul55]

This pull request primarily addresses a bug in the chess board processing logic and makes a minor correction to HTML attribute casing for compatibility. The most important changes are grouped below:

Chess board processing logic fixes:

• Corrected usage of the turn variable in processGame within lichess.ts to ensure the current turn is always retrieved from the chess instance, preventing stale or incorrect board state during undo operations.
• Updated the assignment of the turn value in the returned board object to use chess.turn(), ensuring consistency with the actual game state.

HTML attribute casing correction:

• Changed the http-equiv attribute to httpEquiv in the meta tag within pages/_document.tsx for React compatibility and to prevent potential rendering issues.

[vercel]

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Project	Deployment	Preview	Comments	Updated (UTC)
me-chess-book	Ready	Preview	Comment	Dec 9, 2025 11:26am

[Copilot]

Pull request overview

This pull request fixes a critical bug in chess board rendering where the turn indicator was captured before undo operations, resulting in stale board state. It also corrects a React JSX attribute for proper compatibility.

• Replaced stale turn variable with dynamic chess.turn() calls to reflect the current game state after undo operations
• Updated JSX attribute from http-equiv to httpEquiv for React compatibility

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
lichess.ts	Fixed turn tracking by using chess.turn() dynamically instead of capturing it before undo operations, ensuring accurate board state at the position of interest
pages/_document.tsx	Corrected meta tag attribute to use camelCase httpEquiv instead of http-equiv for proper React/JSX syntax

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