Update onboarding to V1 browser and desktop flows (#6714)

* Remove unused `telemetryLoader`

* Remove onboarding redirect behavior

* Allow subRoute to be passed to navigateToProject

* Replace warning dialog routes with toasts

* Wire up new utilities and toasts to UI components

* Add home sidebar buttons for tutorial flow

* Rename menu item

* Add flex-1 so home-layout fills available space

* Remove onboarding avatar tests, they are becoming irrelevant

* Consolidate onboarding tests to one longer one

and update it to not use pixel color checks, and use fixtures.

* Shorten warning toast button text

* tsc, lint, and circular deps

* Update circular dep file

* Fix mistakes made in circular update tweaking

* One more dumb created circular dep

* Update src/routes/Onboarding/utils.tsx

Co-authored-by: graphite-app[bot] <96075541+graphite-app[bot]@users.noreply.github.com>

* Fix narrow screen home layout breaking

* fix: kevin, navigation routes fixed

* fix: filename parsing is correct now for onboarding with the last file sep

* Fix e2e test state checks that are diff on Linux

* Create onboarding project entirely through systemIOMachine

* Fix Windows path construction

* Make utility to verify a string is an onboarding value

* Little biome formatting suggestion fix

* Units onboarding step was not using OnboardingButtons

* Add type checking of next and previous status, fix useNextClick

* Update `OnboardingStatus` type on WASM side

* Make onboarding different on browser and web, placeholder component

* Show proof of concept with custom content per route

* Make text type args not insta dismiss when you click anywhere

* Make some utility hooks for the onboarding

* Update requestedProjectName along with requestedProjectName

* Build out a rough draft of desktop onboarding

* Remove unused onboarding route files

* Build out rough draft of browser onboarding content

* @jgomez720 browser flow feedback

* @jgomez420 desktop feedback

* tsc and lints

* Tweaks

* Import is dead, long live Add files

* What's up with my inability to type "highlight"?

* Codespell and String casting

* Update browser sample to be axial fan

* lint and tsc

* codespell again

* Remove unused nightmare function `useDemoCode`

* Add a few unit tests

* Update desktop to use bulk file creation from #6747

* Oops overwrote main.kcl on the modify with text-to-cad step

* Undo the dumb use of `sep` that I introduced

* Fix up project test

which was fragile to the number of steps in the onboarding smh

* Fix up onboarding flow test

* typo

---------

Co-authored-by: graphite-app[bot] <96075541+graphite-app[bot]@users.noreply.github.com>
Co-authored-by: Kevin Nadro <kevin@zoo.dev>

src/lib/routeLoaders.ts

@@ -12,7 +12,12 @@ import {
 } from '@src/lib/constants'
 import { getProjectInfo } from '@src/lib/desktop'
 import { isDesktop } from '@src/lib/isDesktop'
-import { BROWSER_PATH, PATHS, getProjectMetaByRouteId } from '@src/lib/paths'
+import {
+  BROWSER_PATH,
+  PATHS,
+  getProjectMetaByRouteId,
+  safeEncodeForRouterPaths,
+} from '@src/lib/paths'
 import {
   loadAndValidateSettings,
   readLocalStorageAppSettingsFile,
@@ -63,6 +68,17 @@ export const fileLoader: LoaderFunction = async (
         }
       }
 
+      // If we are navigating to the project and want to navigate to its
+      // default file, redirect to it keeping everything else in the URL the same.
+      if (projectPath && !currentFileName && fileExists && params.id) {
+        const encodedId = safeEncodeForRouterPaths(params.id)
+        const requestUrlWithDefaultFile = routerData.request.url.replace(
+          encodedId,
+          safeEncodeForRouterPaths(fallbackFile)
+        )
+        return redirect(requestUrlWithDefaultFile)
+      }
+
       if (!fileExists || !currentFileName || !currentFilePath || !projectName) {
         return redirect(
           `${PATHS.FILE}/${encodeURIComponent(