[MBL-19529][S] Learner Dashboard - Widget Settings Save

[vargaat]

What's new?

Implements persistent saving of widget settings in the Learner Dashboard, so user configurations (visibility, order, colors, course settings) survive app restarts.

Widget Architecture Changes

Split DashboardWidgetIdentifier into Two Enums

• SystemWidgetIdentifier - fixed, always-visible widgets (offlineSyncProgress, fileUploadProgress, courseInvitations, globalAnnouncements, conferences).
• EditableWidgetIdentifier - user-configurable widgets (helloWidget, coursesAndGroups). These can be hidden, reordered, and have persisted settings.

Factory Methods Moved Onto Identifier Enums

• Widget view model creation was extracted from LearnerDashboardWidgetAssembly:
  • SystemWidgetIdentifier.makeViewModel
  • EditableWidgetIdentifier.makeViewModel
  • EditableWidgetIdentifier.makeSubSettingsView - returns an optional settings view per widget (only coursesAndGroups has one)
• LearnerDashboardWidgetAssembly is now just a thread-safe singleton cache for CoursesInteractor.

Interactor Now Drives Two Separate Widget Pipelines

• LearnerDashboardInteractorLive accepts two factory closures at init time: systemWidgetFactory and editableWidgetFactory to create view models.
• loadWidgets() always maps all system widgets first, then loads saved/default configs, merges them (to handle newly added widgets after updates), filters by visibility, sorts by order, and appends editable widgets.

Settings Changes Save Immediately and Trigger Reload

• When the user changes any setting, it saves immediately to SessionDefaults and fires a callback, which causes LearnerDashboardViewModel to call loadWidgets() again.

Color Management

A new LearnerDashboardColorInteractor owns all dashboard color logic:

• Holds a CurrentValueSubject<Color, Never> for reactive color updates.
• Persists the selected color ID (not the raw color value) via SessionDefaults+DashboardColor.
• LearnerDashboardViewModel subscribes to color changes via .onReceive.
• Colors are saved by their IDs so we needed some refactoring in Core related to that.

refs: MBL-19529
builds: Student
affects: Student
release note: none

test plan:

• Test widget settings.

Screenshots

ScreenRecording_03-11-2026.12-45-27_1.mov

Checklist

• Follow-up e2e test ticket created
• A11y checked
• Tested on phone
• Tested on tablet
• Tested in dark mode
• Tested in light mode
• Approve from product

[bitrise]

Builds

Commit: Fix lint violation. (882f35a)
Build Number: 1552
Built At: Mar 13 17:39 CET (03/13 10:39 AM MDT)

Student

[rh12]

I had some additional findings

• There should be a "Customize Dashboard" button at the bottom of the Dashboard
  • Both in Empty and Data states
• We should show an empty state even if there are system widgets (like the Global Announcement on the Figma example). So this state should be determined by the lack of editable widgets.
• The empty state should be the "All widgets are turned off" one, not the one describing no courses. That's already done for the Courses widget.

I don't mind (actually, would prefer) these to be added in a followup PR though

[rh12]

QA + 1

For the followup ticket:

• Color selector: white checkmark not visible in Dark Mode "black" circle
• VoiceOver: Disabled up/down arrow is available (both in end-state and in hidden widget state), and the user never knows that it does nothing. Maybe this could be improved somehow.
• We could disable the subsetting toggles when the widget itself is hidden. IMHO it would be less confusing to not have active controls in the hidden section.

[bitrise]

	Warnings
⚠️	This pull request will not generate a release note.
⚠️	One or more files are below the minimum test coverage 50%

Affected Apps: Student

Builds: Student

MBL-19529

Coverage	New %	Master %	Delta
Canvas iOS	91.7%	81.06%	10.64%
Core/Core/Common/CommonUI/Layout/FlexibleGrid.swift	0%	--	--

Generated by 🚫 dangerJS against 882f35a