Enhance TypeScript testing configuration

[M3gA-Mind]

• Updated ESLint configuration to include unit test files with TypeScript and JSX support.
• Modified tsconfig.json to include test files for better type checking.
• Added a new tsconfig.unit.json for unit tests, specifying necessary types and includes.
• Adjusted vitest.config.ts to include the new test file patterns for comprehensive testing coverage.

Summary

• What changed and why.
• Keep this to 3-6 bullets focused on user-visible or architecture-impacting changes.

Problem

• What issue or risk this PR addresses.
• Include context needed for reviewers to evaluate correctness quickly.

Solution

• How the implementation solves the problem.
• Note important design decisions and tradeoffs.

Testing

• yarn -s compile
• cargo check --manifest-path app/src-tauri/Cargo.toml
• Other checks run (list commands)
• Manual validation completed (list scenarios)

Impact

• Runtime/platform impact (desktop/mobile/web/CLI), if any.
• Performance, security, migration, or compatibility implications.

Breaking Changes

• None
• Yes (describe clearly, including migration steps)

Related

• Issue(s):
• Follow-up PR(s)/TODOs: