perf: reduce duplicate app initialization and heavy view imports

Deduplicates concurrent app initialization in the config store
Lazy-loads VS Code-only app surfaces
Avoids broad view barrel imports for better chunk isolation

packages/ui/src/components/views/index.ts

@@ -1,9 +1,2 @@
+/** Entry-level views only. Avoid barrel re-exports that pull heavy modules into the main chunk. */
 export { ChatView } from './ChatView';
-export { PlanView } from './PlanView';
-export { GitView } from './GitView';
-export { DiffView, useDiffFileCount } from './DiffView';
-export { TerminalView } from './TerminalView';
-export { FilesView } from './FilesView';
-export { SettingsView } from './SettingsView';
-export { SettingsWindow } from './SettingsWindow';
-export { MultiRunWindow } from './MultiRunWindow';