fix: long track name displaying issue; wrong separator model name mapping; imported generated full song not adjusting max bars; implemented retry mechanism for K.G.One server calls.

src/core/commands/index.ts

@@ -22,6 +22,8 @@ export { PasteRegionsCommand } from './region/PasteRegionsCommand';
 export { UpdateRegionCommand, type RegionUpdateProperties } from './region/UpdateRegionCommand';
 export { ImportAudioCommand } from './region/ImportAudioCommand';
 export { ImportMidiClipCommand } from './region/ImportMidiClipCommand';
+export { ImportStemsCommand } from './region/ImportStemsCommand';
+export type { StemImportEntry } from './region/ImportStemsCommand';
 
 // Note commands
 export { CreateNoteCommand } from './note/CreateNoteCommand';