chore: prepare for npm package publish

docs: add Chinese README and fix config issues

Add Windows support to CI and fix stderr capturing, add merge demo

Merge remote-tracking branch 'origin/master'

feat: add playground

Add farewell function

Update feature.js

Add feature.js

Merge pull request #1 from z0gSh1u/claude/remove-api-separators

chore: improve README formatting and organization

Initial plan

chore: remove git hook samples and add playground directory

fix: correct Rust toolchain action to dtolnay/rust-toolchain

ci: enhance GitHub Actions workflow and add testing design doc

ci: add GitHub Actions workflow for running tests