Move inline CSS from ChatPage.tsx to ChatPage.css for consistency

[Copilot]

This PR migrates all CSS-in-JS styles from ChatPage.tsx to the dedicated ChatPage.css file for better maintainability and consistency.

Changes Made

• Removed CSS-in-JS implementation: Eliminated createCssContext and all inline CSS definitions from ChatPage.tsx
• Added CSS classes to ChatPage.css:
  • .chat-container - Main container with white background, border-radius, padding, and box-shadow
  • .message - Message styling with light blue background and blue left border
  • .input-container - Flex layout for input and send button
  • .status - Centered, bold status text
  • .connected / .disconnected - Green/red color classes for connection status
• Updated component to use className: Replaced dynamically generated CSS classes with static CSS class names
• Maintained JavaScript compatibility: Kept all data-* attributes for client-side functionality
• Updated tests: Modified tests to verify CSS classes instead of CSS-in-JS functionality

Before and After

Before: Used createCssContext from hono/css to generate dynamic CSS classes
After: Uses traditional CSS classes defined in the stylesheet

The visual appearance remains exactly the same, but all styling is now consolidated in one place for easier maintenance.


Testing

• ✅ All unit tests pass
• ✅ Build succeeds without errors
• ✅ Manual verification shows identical visual appearance
• ✅ WebSocket functionality remains intact

Fixes #36.

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[mahata]

@copilot Fix CI in GitHub Actions.

[Copilot]

@copilot Fix CI in GitHub Actions.

Fixed the CI failure by correcting CSS formatting in the rgba() function to meet Biome linter requirements. The issue was missing spaces after commas in rgba(0,0,0,0.1) which should be rgba(0, 0, 0, 0.1). CI now passes all checks including linting, building, and testing. (e623516)