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Miguel Angel Simon Sierra
3003452310
The studio shipped one 3.7 MB eager entry chunk: 1,126,473 B gzip against the 600 KiB eagerEntryChunkGzipBytes budget. CodeMirror and the markdown renderer were the two largest blocks on that path and neither is needed to paint the shell. - React.lazy the source editor (@codemirror/*, @lezer/*) and the storyboard source view (marked, dompurify), copying the deferred-dependency shape of the mediabunny dynamic import in player/lib/mediaProbe.ts. - Add LazyPanel: one Suspense + error boundary whose fallback fills the panel's slot (h-full w-full flex-1) so opening the editor cannot shift the layout, and whose rejected-chunk state renders a visible retry instead of a blank panel. - manualChunks splits the React runtime and the remaining vendor code out of the app chunk so app-only deploys stop invalidating them for repeat visitors. - tests/e2e/studio-bundle-budget.mjs gates the built artifact against eagerEntryChunkGzipBytes with no browser. It measures the entry module plus its modulepreloaded chunks, not the entry file alone: the entry file alone now gzips to 444,432 B and would report a false pass while the browser still downloads 860,966 B before first paint. Eager gzip drops 1,126,473 B -> 860,966 B (-23.6%). Still 40% over the 600 KiB budget, so the gate fails by design; the remainder is a Node-only AST stack (@babel/parser, esprima, acorn, recast, ast-types) pulled into the browser bundle through @hyperframes/sdk, which is outside this unit.