Every app module now reaches liboakengine exclusively through
oakengine_* C calls, EngineEventBridge subscriptions and app-side
handle headers (cliphandle/keyframehandle/nodevaluehandle/oakvaluehelper).
Direct C++ command construction, engine signal connect()s, and engine
type usage in MOC-visible signatures are gone: 557 -> 0 undefined
olive:: symbols in oak-editor.
- NodeFactory's menu creation moves to UI-side widget/menu/factorymenu
(the factory only exposes its node library read-only now)
- DiskManager's cache-settings dialog is created through a registered
std::function handler (registered by Core at startup)
- OlivePluginInstance creates progress UIs through a
PluginProgressReporter interface (Null fallback headless) and queries
the active viewer through a provider callback, both registered by Core
- factory.h, diskmanager and pluginSupport no longer reference any
widget//dialog//panel//window headers or classes
Mike-Solar