fix: improve chat input and terminal handling

- Updated CSS styles for chat input cards to enhance focus and typing states.
- Refined layout and spacing in the ChatHome component for better user experience.
- Added new functions in GatewayTerminal for improved event text extraction and streaming text merging, enhancing message handling during terminal operations.
- Ensured consistent text extraction logic across different states in the GatewayTerminal component.

Author: BunsDev