fix(language): discard stale loadLanguage fetches#29
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Race in
frontend/src/scripts/language.ts: rapidcurrentLanguage.set()calls during startup ('en'→initLanguage()'cs'→ backend'cs') fired parallelloadLanguage()fetches; ifen.jsonresolved aftercs.json, EN translations stomped CS ones. Symptom: random EN UI when CZ was selected.Extracted
createTranslationLoader()withpendingLangIDguard — fetch results that no longer match the latest target are discarded. Top-level subscribe +initLanguage()gated behindtypeof windowso unit tests don't fire spurious fetches.5 unit tests under
bun test,@types/bunadded, newtestscript. svelte-check clean.