fix: restore zh-Hant locale labels

[dso2ng]

Thinking Path

• Hermes WebUI's zh-Hant locale should present Traditional Chinese labels consistently.
• A few recently added tree/MCP labels in the zh-Hant block were copied from the Russian locale.
• Those labels appear in JSON/YAML tree toggles and Settings → System → MCP Servers.
• This PR restores the affected labels to Traditional Chinese and adds a regression check so Cyrillic text does not slip back into zh-Hant.

What Changed

• Replaced Russian zh-Hant labels for tree/raw view and MCP server settings with Traditional Chinese text.
• Normalized the parse-failed note to readable Chinese text.
• Added a targeted zh-Hant regression test that checks the expected labels and rejects Cyrillic characters in the zh-Hant block.

Why It Matters

• zh-TW users currently see mixed Russian/Chinese UI text in affected areas.
• The regression test keeps future locale copy/paste fallout easy to catch.

Verification

• python -m pytest tests/test_chinese_locale.py -q
• Result: 5 passed

Risks / Follow-ups

• Low risk; this only changes locale strings plus a static regression test.
• No behavior or layout changes.

Model Used

• AI-assisted with OpenAI GPT-5.5 via Hermes Agent, using local git/pytest/GitHub CLI tooling.

[nesquena-hermes]

Thanks. zh-Hant labels accidentally inheriting from the ru block is exactly the kind of locale copy/paste fallout that's hard to spot in review — Cyrillic in a Traditional Chinese context only surfaces when a zh-TW user opens the affected panel.

The two main fixes look right:

• tree/raw view toggles back to Traditional Chinese
• Settings → System → MCP Servers labels back to Traditional Chinese
• parse-failed note normalized

The regression test in test_chinese_locale.py that rejects Cyrillic codepoints in the zh-Hant block is the real win here — keeps this from drifting back even if a future PR copies from ru again. Worth considering extending that pattern to other locale blocks (reject mismatched scripts per locale) in a follow-up.

+51/-25, locale-only. Looks good.

[nesquena-hermes]

Shipped in v0.50.245 via batch release PR #1334 (merge commit 52e1567). Thanks @dso2ng! 🙏

Live now at https://github.com/nesquena/hermes-webui/releases/tag/v0.50.245.

Released alongside 9 other contributor fixes — see the v0.50.245 entry in CHANGELOG.md.