rename .model-id-cell to .id-cell, add copy failure state, unify copy handling

[InduwaraSMPN]

This pull request refactors and improves the logic and UI for copying provider and model IDs in the web interface. The changes consolidate duplicate code, introduce a reusable component for ID table cells, and enhance the user experience with better feedback and more robust event handling.

Refactoring and code consolidation:

• Introduced a reusable renderIdCell function in render.tsx to render both provider and model ID table cells, replacing duplicated markup and logic for copy buttons. [1] [2]
• Updated the table rendering to use the new renderIdCell function for both provider and model IDs, simplifying the JSX and reducing repetition.

Copy button behavior and user feedback:

• Replaced the old copyModelId function with a generic copyText helper in index.ts, and switched to event delegation for handling all copy button clicks, making the code more robust and maintainable. [1] [2]
• Added a .failed visual state to the .copy-button in index.css to indicate when copying fails, improving user feedback.

Styling and class name consistency:

• Renamed CSS classes from .model-id-cell to .id-cell throughout index.css for consistency with the new component. [1] [2]