broken-links incorrectly treats Chinese filename links as broken in Chinese docs

[onewesong]

Environment

• OS: Linux
• mint version: 4.2.742
• Node: v24.18.0
• Repo root: operating-analysis (Markdown docs)

Current behavior

mint broken-links reports many false positives when markdown files/anchors use non-ASCII filenames in links, especially Chinese file names.

Why this seems wrong

In our docs, these are real files and valid links, but mint broken-links still marks them broken:

• revenue_margin/Datadog营收看板变更记录.md
  • ./营收与毛利账本设计.md
  • ../doris/revenue_ledger/README.md (as another example)
• shared_docs/revenue_margin_guides/历史营收查询.md
  • 营收与毛利账本.md
  • etc.

Root cause observed from source code

I traced MdxPath.toString() behavior in @mintlify/link-rot:

• Internal markdown link targets are normalized via new URL(mintlify:...).
• For Chinese paths, toString() becomes URL-encoded (e.g. %E8%90...), e.g. 营收与毛利账本设计.md -> %E8%90%A5%E6%94%B6...md.

But page discovery from getLinkPaths() uses raw filesystem paths.
So the lookup key is encoded but target entries are not.

Result: valid links are treated as broken.

Expected behavior

Chinese path links should be resolved same as markdown paths with UTF-8 filenames, or link checker should normalize in a way that treats raw and encoded paths as equivalent.

Repro

1. Create two markdown files with Chinese names in same folder:
   • 营收与毛利账本设计.md
   • Datadog营收看板方案.md
2. In Datadog营收看板方案.md add:

   - [营收与毛利账本设计](./营收与毛利账本设计.md)

3. Run mint broken-links.

Observed: this valid link is reported as broken in multiple cases.