Fix per-user language not applying to the JavaScript bundle

js.php runs with NOSESSION, so it has no REMOTE_USER and the JS_SCRIPT_LIST
handler (which keyed off REMOTE_USER) could never resolve the

Fix per-user language not applying to the JavaScript bundle

js.php runs with NOSESSION, so it has no REMOTE_USER and the JS_SCRIPT_LIST
handler (which keyed off REMOTE_USER) could never resolve the user's language
-- LANG/LANG.plugins.* always shipped in the site default. The page UI followed
the user's choice while all JS strings stayed English.

Carry the language through the js.php <script> URL instead of the session:
- TPL_METAHEADER_OUTPUT appends &uslang=<code> to the js.php src during the
authenticated page request; this also caches the bundle per language so a
stale English bundle is not reused after a switch.
- JS_SCRIPT_LIST reads $INPUT->str('uslang') (survives NOSESSION), validates it
to a real inc/lang/ dir, switches $conf['lang'], and keeps the datepicker
cache-key rewrite.
- Capture the pre-override site default so the URL builder can compare against
it after applyUserLang has already switched $conf['lang'].
- Factor language validation into isValidLangCode(); the param is now
user-controllable so it is checked against [a-z0-9-] + an existing dir.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

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Fix per-user language not applying to JS bundle

JS strings (LANG, LANG.plugins.*) are built by lib/exe/js.php, which is a
separate request that never fires ACTION_ACT_PREPROCESS — so applyUserLang()

Fix per-user language not applying to JS bundle

JS strings (LANG, LANG.plugins.*) are built by lib/exe/js.php, which is a
separate request that never fires ACTION_ACT_PREPROCESS — so applyUserLang()
never ran for it and the JS bundle always shipped in the site-default language.

Hook JS_SCRIPT_LIST (BEFORE) to apply the preferred language before js.php
builds its cache and loads JS strings. The handler also rewrites the
inc/lang/<lang>/jquery.ui.datepicker.js entry in the file list, because
js.php keys its output cache on md5(serialize($files)) and that datepicker
path is the only language-dependent member — without rewriting it, two users
with different languages collide on one cached bundle.

Shared lang-resolution logic extracted to resolvePreferredLang() so both
ACTION_ACT_PREPROCESS and JS_SCRIPT_LIST handlers stay DRY.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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Review: fix lock collision, lazy lang-apply, endonyms, null-guards, namespacing

- helper: use a distinct lock key ($file.'.lock') in setPreferences() so
the outer read-modify-write lock does not c

Review: fix lock collision, lazy lang-apply, endonyms, null-guards, namespacing

- helper: use a distinct lock key ($file.'.lock') in setPreferences() so
the outer read-modify-write lock does not collide with io_saveFile()'s
own internal lock — previously caused a ~3 s CPU spin on every save
- action: applyUserLang() reads the stored 'lang' record directly via
getRecord() instead of getPreference(), avoiding the REGISTER event
(and inc/lang/ glob) on every logged-in request; the toggle registry is
now built after $conf['lang'] is updated, so toggle labels resolve in
the user's language. Add [a-z0-9-] charset guard on the stored code.
Remove the now-moot $this->localised/$this->lang cache reset.
- action: getAvailableLanguages() returns native endonyms via languageName()
(covers all 78 DokuWiki lang dirs; unknown codes fall back to bare code)
- admin: ?? '' null-guard on $userData['name'] in two places
- All three files: migrate to namespaced base classes
(dokuwiki\Extension\{Plugin,ActionPlugin,AdminPlugin,EventHandler,Event})
- plugin.info.txt: bump date to 2026-06-01

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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Review: fix JSON encoding, error message, locale cache, add translations

- helper.php: add JSON_UNESCAPED_UNICODE to json_encode flags
- lang/en: add %s placeholder to adminsavefail for consistency

Review: fix JSON encoding, error message, locale cache, add translations

- helper.php: add JSON_UNESCAPED_UNICODE to json_encode flags
- lang/en: add %s placeholder to adminsavefail for consistency with adminsaved
- action.php: reset plugin locale cache after applying user language override,
so the settings page renders in the user's chosen language rather than the
site default
- Add de, ru, ja translations
- plugin.info.txt: update date

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

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Add a built-in interface language toggle

Initial commit, made with Claude Opus 4.7