Performance Priority: P1 (OPERATIONAL) - Rebuilds : Use widgets and / for granular updates. - Lists : Always use for item recycling. - Heavy Tasks : Use or for parsing/logic. - Repaints : Use for complex animations. Use to debug. - Images : Use + . for SVGs. - Keys : Provide for list items and stable IDs for reconciliation. - Resource Cleanup : Dispose controllers/streams in . - Pagination : Default to 20 items per page for network lists. - Build Purity : Keep methods free of heavy work; move logic to BLoC/Application. - Image Resizing : Always set / when loading images. Anti-Patterns - No Ro…