Fix conflict markers from TypeScript 5.9.3 → 6.0.2 template update

Resolves merge conflicts in application.ts (keep project's Backbone.js
app, discard template's simplified version) and pnpm-lock.yaml (update
peer dependency keys to typescript@6.0.2, preserve vite@7.3.1).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: mockdeep

app/javascript/application.ts

@@ -1,7 +1,6 @@
 // @ts-nocheck
 import "@hotwired/turbo-rails";
 import "@rails/activestorage";
-<<<<<<< HEAD
 import * as bootstrap from "bootstrap";
 
 window.bootstrap = bootstrap;
@@ -342,10 +341,3 @@ window.StoryList = StoryList;
 window.AppView = AppView;
 
 export { Story, StoryView, StoryList, AppView };
-=======
-import {session} from "@hotwired/turbo";
-
-import "./controllers/index";
-
-session.drive = false;
->>>>>>> 70fbdce (Update typescript to version 6.0.2 (#1384))