[Snoopy147]

Problem (user-reported on prod)

Hovering a window outlines it; hovering a Bones service box (electric panel / water heater) does nothing. Selection works.

Root cause

The editor + viewer SelectionManagers build their emitter subscription lists from getSelectableKinds() inside effects, snapshotted at mount. Built-in kinds register synchronously at bootstrap, but plugin kinds arrive through async dynamic-import discovery (extendPluginDiscovery(async () => (await import('@pascal-app/plugin-bones')).bonesPlugin) in the community bootstrap) — i.e. after mount. The registry had no change notification, so the subscription lists stayed frozen on the pre-plugin kind set: plugin nodes never got :enter/:leave/:click/:double-click handlers unless an unrelated effect dep (mode, movingNode, isCurveReshape) happened to change first. Hover is the visible casualty; click/paint/pointerdown lists had the same latent staleness.

Dev is unaffected (apps/editor bootstrap uses static imports → registration completes in microtasks before any effect runs), which is why QA on localhost never reproduced it.

Fix (minimal)

• packages/core/src/registry/registry.ts: _register/_reset bump a monotonic version and notify listeners (getRegistryVersion / onRegistryChange).
• packages/core/src/registry/use-registry-version.ts: useRegistryVersion() — useSyncExternalStore binding.
• packages/editor SelectionManager: registryVersion added to the dep arrays of the 5 effects that snapshot getSelectableKinds() (paint, pointerdown, click, hover/double-click, delete-mode).
• packages/viewer SelectionManager: same for its single subscription effect (deps were []).

A late plugin load now rebuilds the subscriptions; re-running the effects is idempotent (they unsubscribe in cleanup).

Tests

• New gates in packages/core/src/registry/registry.test.ts: version bump + listener notify + unsubscribe; loadPlugin notifies per kind.
• packages/core 1007 pass, packages/editor 604 pass, packages/viewer 101 pass; tsc --noEmit clean on all three.

🤖 Generated with Claude Code

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Note

Medium Risk
Touches core input/selection wiring for all selectable kinds; behavior change is limited to fixing stale subscriptions after late plugin load, with targeted tests on the registry notification API.

Overview
Fixes plugin nodes that could be selected but not hovered in production when kinds register after the selection managers mount.

The node registry now bumps a monotonic version and notifies subscribers on each registerNode / loadPlugin kind and on test _reset, via getRegistryVersion, onRegistryChange, and useRegistryVersion() (useSyncExternalStore). Editor and viewer SelectionManager effects that snapshot getSelectableKinds() into emitter subscriptions now depend on that version so a late async plugin load re-subscribes for hover, click, double-click, paint, pointerdown, and delete handlers.

Tests cover version bumps, listener notify/unsubscribe, and per-kind notifications from loadPlugin.

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