refactor: clarify frontend model ownership

src/features/instrument-details/index.ts

@@ -1,5 +1,4 @@
-export { section } from "./model/section";
-export { useInstrumentOperations } from "./model/useInstrumentOperations";
+export { section, type SectionState } from "./model/section";
 export { InstrumentChart } from "./ui/InstrumentChart/InstrumentChart.view";
 export { InstrumentEvents } from "./ui/InstrumentEvents.view";
 export { InstrumentPosition } from "./ui/InstrumentPosition.view";