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Dashboard: preload module chunks - #404
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Dashboard loading - Memoize module panel, settings editor, and immediate action imports. - Preload enabled modules on idle and sidebar hover or focus. - Keep the current module view visible while a destination chunk resolves. Stable editor layouts - Reserve sized skeleton slots for module views and overlay element editors. - Cover preload and layout behavior with repeated browser specs. Issue reference - Implements #388.
- Recoverable module loading (#388) - Memoize panel, settings, action, and overlay editor imports, evict rejected promises, and recreate lazy views on retry. - Preload eligible chunks on sidebar hover/focus and idle using the shared visibility predicate. - Stable module layouts (#388) - Keep the reserved route height outside Suspense and reserve enough space for overlay editors. - Keep route transitions on the previous view until the new panel is ready. - Regression coverage (#388) - Verify failed imports recover and all lazy views/editors preserve their layout during delayed imports. - Measure responsive-hidden event cells as zero-size in the stable-layout assertion.
- Recoverable chunk loading (#388) - Evict rejected loader promises and recover failed lazy views from a fresh module map. - Keep lazy component identities stable across route Suspense retries. - Permission-aware preloading (#388) - Reuse the sidebar visibility filter for hover, focus, and idle preloads. - Stable panel layouts (#388) - Hold module and overlay editor reservations steady during delayed imports. - Cover every lazy module view and overlay editor with ten-repeat browser checks.
Loader promise recovery - Route synchronous throws and promise rejections through the eviction handler. - Preserve synchronous chunk loading and verify failure then success recovery. Navigation test stability - Hold the idle preload callback so pre-navigation assertions stay deterministic in CI. - Covers the #388 CI blockers.
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This was referenced Oct 11, 2026
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Module code is preloaded, so opening a module shows no loading text (epic #389).
preloadModulePanel(id)memoizes the registry loader (panel, settings editor, immediate actions); triggered on sidebar hover/focus and on idle for enabled modulesnavigateruns instartTransition, so the previous view stays until the next one is readyCloses #388