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Marc-André Bombeck
e24db8a889
Two independent every-load costs, one per layer: 1. The static EN import in load-locale.ts put the full en.json catalog (334 KB raw / ~106 KB gz) into the client JS of EVERY route, for every user in every language. No catalog is statically imported by client code anymore: the EN fallback floor of the t() chain loads lazily on the first actual key miss (the locale-integrity guard keeps every locale key-complete, so the miss path is drift-only), and the labs biomarker canonical-name lookup fetches EN on demand. 2. The root layout serialized the ENTIRE active-locale catalog into the RSC flight payload of every document (392 KB of a 505 KB dashboard HTML, re-downloaded on every hard load, uncacheable). The handoff is now a versioned, immutable-cacheable boot script (/i18n/<locale>?v=<build>, new route handler) that assigns self.__HL_I18N before the hydration scripts run, plus a server-side cache seed in load-locale.ts behind a typeof-window branch that Turbopack compiles out of the browser bundle (verified: zero catalog bytes in any client chunk, zero route manifests referencing one). SSR text stays correct and the first client render holds the same bundle the server rendered with — no EN flash, no hydration drift. The boot script is public (proxy allowlist: the login page needs it pre-auth; the body is the same catalog JSON that ships in the public repo) and cache-first in the service worker, so an offline relaunch finds it next to the cached shell. Measured (client-reference manifests, gzip): route JS baseline / 391->287 KB gz, /insights 377->273, /measurements 379->275, /insights/mood 394->290 — the ~104 KB gz EN catalog left every route. H2
