perf(studio-server): coordinate cancelable thumbnail generation#2720
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This was referenced Jul 21, 2026
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This was referenced Jul 21, 2026
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What
Family G — Adaptive thumbnails.
Coordinate cancelable thumbnail generation in Studio Server and the browser bridge.
Why
Client-side virtualization is insufficient if duplicate or obsolete thumbnail requests continue consuming browser and server resources.
How
Deduplicate generation by request identity, own cancellation and cleanup in one server coordinator, make output writes atomic, expose the shared device-scale contract, and propagate aborts through the CLI/Vite bridge.
Test plan
Validated with 78 changed-surface Studio tests, 19 focused server tests, 3,026 full Studio tests, 406 full Studio Server tests, both typechecks, format, lint, file-size gate, and full workspace build.