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b372e89282
The React reconciliation "removeChild" error surfaced during rapid dashboard navigation because several effects scheduled deferred DOM operations (focus, CSS positioning) without returning a cleanup that cancelled them. When the component unmounted before the callback fired, it ran against stale DOM and desynchronized React fiber tree from the actual DOM. - context_menu_a11y.cljs: replace tm/schedule-on-idle (30s idle window) with tm/schedule (setTimeout 0) and return a rx/dispose! cleanup. - dropdown.cljs: capture the tm/schedule handle and dispose it in the effect cleanup. - tooltip.cljs: capture the ts/raf handle and cancel it on cleanup. AI-assisted-by: opencode-go/mimo-v2.5-pro