docs(changelog): sync full changelog from tego-standard

[baizixv]

Automatically sync full changelog files from tego-standard repository to ensure consistency. This PR overwrites the changelog files in docs repository with the complete changelog from tego-standard repository.

Summary by CodeRabbit

• Documentation
  • Updated changelog for version 1.6.15 with locale updates and cronjob scheduling fixes. Reference links updated for release tracking.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 14016628-ba71-4b00-b469-221f84b86505

📥 Commits

Reviewing files that changed from the base of the PR and between 71e7db2 and d1aac68.

📒 Files selected for processing (2)

• docs/en/changelog/changelog.md
• docs/zh/changelog/changelog.md

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📝 Walkthrough

Walkthrough

Updated English and Chinese changelog files with a new version 1.6.15 release entry dated 2026-04-09. Added documentation for a locale update feature and module-cron bug fix. Updated reference links to track the new release tag.

Changes

Cohort / File(s)	Summary
Changelog Files docs/en/changelog/changelog.md, docs/zh/changelog/changelog.md	Added version 1.6.15 release entry (2026-04-09) with locale update addition and module-cron scheduling fix. Updated [Unreleased] comparison link from v1.6.14...HEAD to v1.6.15...HEAD. Added new [1.6.15] reference link to GitHub release tag.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~3 minutes

Possibly related PRs

• docs(changelog): sync full changelog from tego-standard #208: Both PRs add a new release entry and update the Unreleased comparison link in the same changelog files.
• docs(changelog): sync full changelog from tego-standard #214: Both PRs follow the same changelog update pattern for different version releases (1.6.15 vs 1.6.13).

Poem

🐰 Hop, hop, the changelog grows,
Version 1.6.15 now shows,
Locale updated, cronjobs fixed with care,
A release complete, documented fair! ✨

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/sync-full-changelog-20260409-075816

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