chore: upgrade TypeScript to 6.0.2

[chenjiahan]

Summary

• Upgrade TypeScript to 6.0.2.
• Replace the root tsconfig.json with the shared NodeNext configuration.
• Validate the change with pnpm build and pnpm test.

Related Links

• https://github.com/microsoft/TypeScript/releases/tag/v6.0.2

[Copilot]

Pull request overview

Upgrades the repository’s TypeScript toolchain to v6.0.2 and updates TypeScript compiler configuration to use NodeNext-style module settings, aligning builds and declaration generation with newer ESM/Node resolution behavior.

Changes:

• Upgrade typescript dependency to 6.0.2 and refresh pnpm-lock.yaml.
• Update root tsconfig.json compiler options (target + NodeNext module/moduleResolution, rootDir, types).
• Minor package.json formatting cleanup.

Reviewed changes

Copilot reviewed 1 out of 3 changed files in this pull request and generated no comments.

File	Description
tsconfig.json	Updates TS compiler options toward NodeNext settings and ES2023 target.
package.json	Pins TypeScript to 6.0.2 and normalizes JSON formatting.
pnpm-lock.yaml	Locks TypeScript and dependent peer snapshot updates to 6.0.2.

Files not reviewed (1)

• pnpm-lock.yaml: Language not supported

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