Update README.md

[ZhengdaWang (zhengdawang443)]

Summary

Related issue

Design document

SPEC updates

Changes

Verification

Evidence

Release or documentation impact

Checklist

Spec-driven development

• I reviewed root SPEC.md and every relevant module SPEC.md.
• Any required design and SPEC confirmation gates occurred before implementation.
• The implementation, tests, and documentation agree with the current confirmed SPEC files.
• I used the current confirmed SPEC files, not the design document, as the implementation source of truth.

Quality and safety

• I ran focused tests and required formatting or lint checks, or explained why a check was not applicable.
• I updated user-facing documentation when behavior or setup changed, or it is not applicable.
• I did not commit credentials, tokens, account data, personal data, local .env files, generated logs, reports, screenshots, or workspace output.
• I reviewed any included screenshots, videos, logs, reports, and Run artifacts for secrets, private paths, device identifiers, and account data.
• I did not add large binary media to Git history unless the repository already owns that exact artifact and the size is justified.