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1e0459dc2d
Thumbnails that finish loading while offscreen (in the 500px pre-load zone) were still playing the thumbhash fade-out transition, causing visual flicker when scrolling. This adds an `actuallyIntersecting` property (zero-margin viewport check) alongside the existing `intersecting` (500px expanded margins) to distinguish between pre-loaded and truly visible assets. - Refactor `calculateViewerAssetIntersecting` to return a numeric flag (NONE/PRE/ACTUAL) avoiding object allocation in the hot derived path - Inline `calculateMonthGroupIntersecting` into `updateIntersectionMonthGroup` to avoid intermediate object allocation - Thread `actuallyIntersecting` through AssetLayout → Month → Timeline → Thumbnail snippet chain - Use `actuallyIntersecting` in Thumbnail to skip the fade when loaded offscreen - Add unit tests for `isIntersecting` and `calculateViewerAssetIntersecting`
Immich web project
This project uses the SvelteKit web framework. Please refer to the SvelteKit docs for information on getting started as a contributor to this project. In particular, it will help you navigate the project's code if you understand the basics of SvelteKit routing.
When developing locally, you will run a SvelteKit Node.js server. When this project is deployed to production, it is built as a SPA and deployed as part of the server project.