Feat/admin create index page temp workabout

[adriangohjw]

Problem

Currently, migrators depend on isoengineers to create the index page, which consumes engineering bandwidth and leads to costly context switching.

Since the feature for agency users to customize the index page is unlikely to be released soon, this serves as a temporary workaround to reduce the engineering load.

Note: This is an admin-only interim solution until the customizable index page is fully developed.

Solution

Breaking Changes

• Yes - this PR contains breaking changes
  • Details ...
• No - this PR is backwards compatible

Features:

• add a "Add index page" button for folders and collections for isomer admins

Before & After Screenshots

Screen.Recording.2025-02-01.at.6.20.33.AM.mov

Tests

Non Isomer admins should not see the button

1. login with a non-isomer admin account e.g. [email protected]
2. go inside a folder -> you should not see the new button
3. go inside a collection -> you should not see the new button

Isomer admins should see the button

1. login with a isomer-admin account e.g. [email protected]
2. go inside a folder without an index page
   • you should see the button
   • clicking on the button should create an index page
   • opening the index page in json editor mode should show correct values
   • button should be disabled after the index page is created
   • button should still be disabled after reloading the page
3. repeat step 2 for collection

[datadog-opengovsg]

Datadog Report

Branch report: feat/admin-create-index-page-temp-workabout
Commit report: e7a8fb5
Test service: isomer-studio

✅ 0 Failed, 266 Passed, 36 Skipped, 45.65s Total Time
➡️ Test Sessions change in coverage: 1 no change

[adriangohjw]

note - this mimics how on-call isoengineer currently add an index page manually

[seaerchin]

some clarifications but overall ok, no issues w approach. happy to approve later on