Add Chinese glossary (#772)

[LukasWallrich]

Summary

Closes #772.

• Adds the Chinese (Simplified) translation of the FORRT glossary, sourced from the existing glossary spreadsheet (CN_* columns) — 262 entries plus a landing page at /glossary/chinese/ using the intro text from the issue.
• Wires up Chinese throughout the glossary plumbing: 'CN': 'chinese' in _create_glossaries.py, a pinyin sort_key (via pypinyin, with leading punctuation stripped so titles starting with curly quotes / 《》 sort by their first Chinese character), a Chinese UI dictionary block in layouts/glossary/single.html (定义, 参考文献, 翻译, …), and a 中文 button in the language switcher.
• Two incidental fixes ride along because the Chinese work surfaced them:
  • layouts/glossary/list.html now sorts the index TOC by Params.sort_key (matching single.html's per-term TOC) — without this the pinyin sort never reached the landing page since Hugo was falling back to filename order.
  • Pre-existing bug where every language's _index.md marked English as the active button regardless of page is fixed as a side effect of the shortcode refactor.

The first commit is a pure refactor (no Chinese), the second is the feature.

Refactor: language switcher → shortcode + data file (commit 1)

The hardcoded language-button HTML block was duplicated across each glossary _index.md (six files). Adding a future language was a six-file lockstep edit. Now there is a single source of truth:

• data/glossary_languages.yaml — slug + label per language, in display order.
• layouts/shortcodes/glossary_language_switcher.html — renders the buttons and resolves the active language from the page's directory (or an explicit current= arg).
• Each _index.md is now {{< glossary_language_switcher >}} (or with current=\"<lang>\").

Adding the next language requires: one YAML entry, one new content/glossary/<slug>/_index.md, and one line in language_map in _create_glossaries.py.

Test plan

• ~/go/bin/hugo builds clean (no errors, only pre-existing deprecation warning).
• /glossary/chinese/ landing page renders the issue's intro text with the citation alert and Phase II call-to-action.
• A sample Chinese term page (WEIRD → 西方的、受过教育的…) renders with the Chinese UI labels and full definition.
• Chinese TOC is in pinyin order: AMNESIA → ARRIVE指南 → 版本控制 (banben) → … → JSON 文件 → 开放… (kaifang) → … → 西方的… (xifang), with 《旧金山…》 landing in the j block (jiujinshan) and "兄弟"式开放科学 in the x block (xiongdi).
• Each language _index.md now marks its own button as active (English, German, Arabic, Turkish, Chinese all verified in built HTML).
• Other language indexes (English, German) still sort their existing entries correctly after the list.html sort change.

🤖 Generated with Claude Code

[github-actions]

📝 Spell Check Results

Found 25 potential spelling issue(s) when checking 30 changed file(s):

📄 content/glossary/german/_index.md

Line	Issue
24	oder ==> order, older, coder, odder, odor, over, doer
26	oder ==> order, older, coder, odder, odor, over, doer
26	oder ==> order, older, coder, odder, odor, over, doer
26	oder ==> order, older, coder, odder, odor, over, doer
26	unter ==> under
26	Ressource ==> Resource
26	als ==> also
40	als ==> also
40	unser ==> under, unset, unsure, user
40	alle ==> all, alley
40	als ==> also
44	offen ==> often
46	Ressource ==> Resource

📄 content/glossary/turkish/_index.md

Line	Issue
22	Bu ==> By, Be, But, Bug, Bun, Bud, Buy, Bum
22	bu ==> by, be, but, bug, bun, bud, buy, bum
22	Bu ==> By, Be, But, Bug, Bun, Bud, Buy, Bum
24	bu ==> by, be, but, bug, bun, bud, buy, bum
24	Bu ==> By, Be, But, Bug, Bun, Bud, Buy, Bum
24	bu ==> by, be, but, bug, bun, bud, buy, bum
26	Bu ==> By, Be, But, Bug, Bun, Bud, Buy, Bum
26	bu ==> by, be, but, bug, bun, bud, buy, bum
30	Bu ==> By, Be, But, Bug, Bun, Bud, Buy, Bum
42	Bu ==> By, Be, But, Bug, Bun, Bud, Buy, Bum
52	bu ==> by, be, but, bug, bun, bud, buy, bum

📄 layouts/glossary/single.html

Line	Issue
32	Referenz ==> Reference

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ℹ️ How to address these issues:

1. Fix the typo: If it's a genuine typo, please correct it.
2. Add to whitelist: If it's a valid word (e.g., a name, technical term), add it to .codespell-ignore.txt
3. False positive: If this is a false positive, please report it in the PR comments.

_{🤖 This check was performed by codespell}

[github-actions]

👍 All image files/references (if any) are in webp format, in line with our policy.

[LukasWallrich]

⚠️ Staging Deployment Status

This PR was attempted for staging deployment but had merge conflicts and was skipped.

Attempted at: 2026-05-24 08:57:01 UTC
Staging URL: https://staging.forrt.org

Please resolve conflicts with the base branch and the deployment will be retried automatically.

[richarddushime]

LGTM 🥇

ps: 我喜欢这个