refactor: standardize shared configs, dialogs, and component structure

[suleimanjem-hash]

Summary

This PR improves the application's maintainability, consistency, and user experience by centralizing shared configuration, standardizing confirmation dialogs, refactoring large components into reusable modules, and enhancing the gas estimator with a user-friendly cost breakdown.

Changes

Refactoring

• Centralized chain IDs and wallet identifiers into shared configuration modules to eliminate scattered magic strings and numbers.
• Replaced ad-hoc confirmation flows with a shared confirmation dialog component to provide a consistent user experience across the application.
• Refactored large components by extracting shared helper functions, reusable components, and type definitions into dedicated files, improving readability and maintainability.

UX Improvements

• Enhanced the Gas Estimator to display:

  • Approximate USD equivalent of the estimated gas fee.
  • Confidence indicator for gas estimates.
  • Informational disclaimer clarifying that gas costs are estimates and may vary based on network conditions.

Testing

• Added/updated unit tests covering:

  • Shared configuration modules.
  • Shared dialog behavior.
  • Extracted helper functions.
  • Gas estimator UI and estimation logic.

Documentation

• Updated relevant documentation and inline comments to reflect the new shared configuration, dialog system, refactored component structure, and gas estimation behavior.

Benefits

• Removes duplicated configuration values and improves consistency.
• Standardizes confirmation dialogs throughout the application.
• Improves component organization and maintainability.
• Provides users with more informative and transparent gas fee estimates.
• Preserves existing functionality while improving code quality and user experience.

Closes #509

Closes #511

Closes #513

Closes #521

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[nanaf6203-bit]

Nice refactor — unifying configs and dialogs into one shape is exactly the cleanup this codebase needed. LGTM. Merging.