Refactor: Improve code structure with shared types and API client

[adhit-r]

• Centralized all API-related Zod schemas and TypeScript types into src/lib/types/api-schemas.ts.
• Updated API routes and client components to use these shared types.
• Created an API client module src/lib/api-client.ts to encapsulate fetch calls to backend AI API routes.
• Refactored client components (Analysis page, Dashboard, Training Bot interface) to use the new API client.

These changes improve type safety, reduce code duplication, and make client-side API interactions cleaner and more maintainable.

[Copilot]

Pull Request Overview

This PR refactors the chess analysis application to improve code organization and type safety by centralizing API-related schemas and creating a dedicated API client module. The changes eliminate the dependency on Genkit AI flows and implement direct Next.js API routes for all backend functionality.

Key changes:

• Centralized all Zod schemas and TypeScript types into a shared api-schemas.ts file
• Created a unified API client module to handle all backend API interactions
• Converted AI flows to standard Next.js API routes with proper validation and error handling

Reviewed Changes

Copilot reviewed 18 out of 18 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
src/lib/types/api-schemas.ts	New centralized file containing all API schemas and TypeScript types
src/lib/api-client.ts	New API client module with typed methods for all backend endpoints
src/components/train/training-bot-interface.tsx	Updated to use new API client instead of direct flow imports
src/app/api/ai/*/route.ts	New Next.js API routes replacing Genkit AI flows
src/app/(app)/page.tsx	Updated dashboard to use new API client
src/app/(app)/analysis/page.tsx	Updated analysis page to use new API client
src/ai/flows/*.ts	Removed old Genkit flow files
package.json	Removed Genkit dependencies and scripts