[vmuu]

Add catalog-backed i18n for web chrome with English as the source locale and a complete zh-CN catalog. Language can be set via ?lang=, cookie, config locale, or Accept-Language, plus a top-nav switcher.

[lroolle]

Thanks for this, and sorry for the slow reply. The catalog is thorough, the tests pass, and the zh-CN pages render cleanly on the current Ledger UI. A few things before we can merge:

1. Please drop translate="no" and <meta name="google" content="notranslate">. They are on every page, English included, so they turn off browser translation for every language we don't ship, and for session transcripts.
2. Accept-Language. Normalize only knows en, en-us, en-gb and en-au. So en-CA,zh;q=0.5 picks Chinese, and so does fr,zh;q=0, because a q=0 entry ("not acceptable") can still win. Please treat any en-* as English and skip entries with q<=0.
3. One path for the translator. The middleware stores it in the request context, but nothing reads it there; locFrom runs Detect again. The package-level English wrapper functions are called only from tests; tests can call loc{}.renderX(...) instead.
4. One escaper. html.EscapeString is enough; ui and htmlText can go. Browsers render ' correctly.
5. Small leftovers. Search-result ages still use the English helper ("5m ago"), and a few catalog keys are unused.

Heads-up: the web templates are being reworked on a separate branch. The internal/i18n package and the config plumbing should carry over as they are; the page wiring may need another pass when that lands.

CI is approved and running.

[lroolle]

CI result: tests pass; golangci-lint fails on the items in point 3 above. The page-level English wrappers (renderIndexPage, renderProjectPage, renderSearchPage, renderSettingsPage, renderMemoryPage, renderSessionsPage, pageHeader) are flagged unused, and label at internal/web/locale.go:99 is an ineffectual assignment. Fixing point 3 should turn lint green.

[lroolle]

Merged, thank you. We pushed the review fixes onto your branch rather than send another round:

• browser translation stays on (no translate="no" / notranslate)
• any en-* region is English, zh-Hans-* is Simplified, q=0 entries are skipped
• search-result ages follow the page language
• one detection path (locFrom), one escaper (html.EscapeString), test-only wrappers removed
• catalog values that carry markup end in _markup, with a test guarding the rest
• pages inline only the js.* keys

Details are in c066999 and the "Review changes" section of your devlog. It ships in the next release.