Switch from Redux to React Query + Context

Parts of the redux state to migrate

• courseDetail - https://github.com/openedx/frontend-app-authoring/pull/2724
• customPages - https://github.com/openedx/frontend-app-authoring/pull/3124
• discussions
• assets
• pagesAndResources - https://github.com/openedx/frontend-app-authoring/pull/3222
• scheduleAndDetails - https://github.com/openedx/frontend-app-authoring/pull/3093
• advancedSettings - https://github.com/openedx/frontend-app-authoring/pull/2893
• studioHome (needs refactor)

  • One thing I'd like to get rid of entirely is the weird "Studio Home" state which has become a kitchen sink of data (course list, library list, user permissions, feature flags, branding/theming). I think the idea was to improve loading times by loading all the data needed to render the studio home page from a single API, but it's just messy now. And today a few small parallel requests that are definitely needed are better than one big request that ends up loading unused data. So that should be broken up into smaller things (course list query, library list query, users permissions query, etc.) and more specific contexts.

• models
  • courseApps - https://github.com/openedx/frontend-app-authoring/pull/3222
  • liveApps
  • liveAppConfigs
  • XpertSettings - https://github.com/openedx/frontend-app-authoring/pull/3222
  • courseDetails - https://github.com/openedx/frontend-app-authoring/pull/2724
  • sequences
  • assets
  • videos
  • discussionTopics
• live
• courseTeam - https://github.com/openedx/frontend-app-authoring/pull/2888
• courseUpdates - https://github.com/openedx/frontend-app-authoring/pull/3185
• processingNotification - https://github.com/openedx/frontend-app-authoring/pull/2917
• helpUrls - https://github.com/openedx/frontend-app-authoring/pull/2714
• courseExport - https://github.com/openedx/frontend-app-authoring/pull/2908
• courseOptimizer - By @navinkarkera
• generic
• courseImport - https://github.com/openedx/frontend-app-authoring/pull/2902
• videos - By @navinkarkera
• courseOutline
  • https://github.com/openedx/frontend-app-authoring/pull/2830
  • https://github.com/openedx/frontend-app-authoring/pull/2884
  • https://github.com/openedx/frontend-app-authoring/pull/2900
  • https://github.com/openedx/frontend-app-authoring/pull/3073
  • https://github.com/openedx/frontend-app-authoring/pull/3123
• courseUnit
• courseChecklist - https://github.com/openedx/frontend-app-authoring/pull/2870
• accessibilityPage - https://github.com/openedx/frontend-app-authoring/pull/2760
• certificates - https://github.com/openedx/frontend-app-authoring/pull/3117
• groupConfigurations - https://github.com/openedx/frontend-app-authoring/pull/2980
• textbooks - https://github.com/openedx/frontend-app-authoring/pull/3047
• editor state is in a separate ticket: https://github.com/openedx/frontend-app-authoring/issues/2088

Other tasks:

• Queue of messages in the ToastContext: https://github.com/openedx/frontend-app-authoring/pull/2917#discussion_r2866830912
• Remove redux and related packages from this repo's dependencies.
• Consider installing @tanstack/react-query-devtools ?

Start by reviewing src/store.ts, the unchecked state areas listed in the issue, and studio-home/data/slice.ts. Compare the referenced migration pull requests to understand the existing React Query and Context approach. Done means the remaining Redux state is migrated, Redux-related packages are removed, and the listed follow-up tasks are addressed.