Site localization polish: Chinese punctuation, French spacing, Spanish capitalisation, unlocalized article badges, shared legal date #1056

Summary

Conventions in the German, French, Spanish and Chinese site strings and in the shared legal metadata that a review of the GDPR copy turned up but that are not specific to it. None changes meaning; they make the localized site read as written by a native speaker and keep the legal pages honest.

Items

1. Chinese punctuation. Many half-width , : ; ( ) next to CJK text in site/js/translations.js (the newer wizard strings already use full-width marks). Normalise to full-width in the native-review pass.
2. French spacing. Plain spaces before : ; ? !. French typography uses a no-break space (U+00A0, or U+202F before ; ? !).
3. Spanish capitalisation. "Artículo" is capitalised in running text in dozens of places (lower case is used in a few); the official Spanish text of the GDPR and the RAE style use lower case "artículo".
4. Compliance badges. All 15 <span class="article-num"> badges in site/compliance.html (Article 9 ... Article 17, GDPR Art. 15, GDPR Art. 17) are hard-coded English and have no data-i18n key, so every locale shows them in English.
5. Shared "last updated" date. common.legal.last_updated is one key used by both privacy.html and terms.html, so a change to one page moves the date shown on the other. Split it per page. (Pull request fix(docs): align GDPR, erasure, retention and PII documentation with the code; harden the user-manual schema guard #1050 moved it to 2026-10-22 because the privacy page changed.)

Acceptance criteria

• Each item is done or consciously closed with a reason in the pull request.
• node --test tests/site/*.test.cjs, tools/check_site_claims.py --strict and tools/check_site_chrome_parity.py stay green.

Context

Found while reviewing the site strings for #101. Related: #683, #684 (site sweeps), native review of the same strings in a separate issue.