fix: make issue auto-close strictly label-based

[crazylxr]

Background

A batch of old issues (including issues without close-required labels) were auto-closed by github-actions[bot].

Root Cause

.github/workflows/issue-close-require.yml used actions-cool/issues-helper@v3, and the close behavior became non-deterministic / not aligned with expected label filtering.

Changes

• Replace third-party close action with actions/github-script@v7
• Add explicit permissions: issues: write
• Implement deterministic close logic:
  • only process open issues with labels 🤔 Need Reproduce or needs more info
  • only close issues inactive for 3 days
  • post bilingual close comments before closing
  • skip PRs

Impact

Prevents unlabeled issues from being closed by this workflow and keeps close policy transparent and auditable.

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