fix: keep bilingual release links current

[tinkeragora]

Summary

• update the Chinese README to the currently published v0.2.1 release
• record the fix in the changelog
• enforce bilingual README release-link alignment with the workspace package version

Validation

• cargo fmt --all -- --check
• cargo test --workspace --locked
• cargo clippy --workspace --all-targets --locked -- -D warnings
• cargo check -p tool_call_trace_web --target wasm32-unknown-unknown --locked
• wasm-pack build --target web --out-dir static/pkg crates/tool_call_trace_web -- --locked
• npm ci --ignore-scripts && npm run test:wasm-smoke
• ruby scripts/test_check_docs.rb
• ruby scripts/check_docs.rb
• ruby scripts/test_check_workflow_contracts.rb
• ruby scripts/check_workflow_contracts.rb
• ruby scripts/test_assemble_pages.rb