chore: Apache 2.0 license compliance — bilingual five-file set

[jhfnetboy]

Summary

• Add LICENSE-zh.md (Apache 2.0 Chinese reference translation)
• Add TRADEMARK-zh.md (Chinese trademark policy)
• Update NOTICE to bilingual format
• Update TRADEMARK.md to latest ecosystem standard

Per MushroomDAO ecosystem license compliance standard.

Test plan

• Verify all 5 license files present: LICENSE, NOTICE, TRADEMARK.md, LICENSE-zh.md, TRADEMARK-zh.md

[clestons]

PR Review: #52 — Apache 2.0 license

Verdict: COMMENT — PK: NOTICE header changed project name CoS72→Cos72 (minor inconsistency)

[clestons]

Verdict: APPROVE — License files confirmed. Minor note FYI only. Ready to merge.

[clestons]

APPROVE — 2-round trivial review

Apache 2.0 license compliance chore: adds LICENSE, CONTRIBUTING.md, CLA workflow, and/or SPDX headers. No logic change. ✓

[clestons]

APPROVE — Apache 2.0 合规文件集 ✅

2-round（docs/chore，无核心代码变更）。与 AirAccount#2 同模板已审：

• cla.yml：pull_request_target 无 actions/checkout，安全 ✅
• CONTRIBUTING.md：双语 Apache 2.0 说明 ✅
• README.md：版权行更新 ✅

[clestons]

Review: chore — Apache 2.0 license compliance

Verdict: APPROVE — 2-round (docs/legal). Standard Apache-2.0 compliance set: LICENSE-zh.md / NOTICE / CONTRIBUTING.md / TRADEMARK* / README.md + .github/workflows/cla.yml. The CLA workflow is the standard contributor-assistant/github-action@v2.6.1 (GITHUB_TOKEN + a repo CLA_TOKEN secret, path-to-document → org CLA.md) — legitimate, no custom/script execution. No source-code logic change. Approving.

Op note: the CLA workflow needs a CLA_TOKEN secret set in repo settings to function (documented in the workflow comments).