2087593 - Show per-resource import outcomes in the migration wizard (nothing imported / partly imported / not available)

Status: NEW

(Firefox :: Migration, enhancement, P3)

Description

[Ray Fambro]

Bug 2080904 now records, for each resource type, how many items were available and how many were migrated. The wizard doesn't use those counts yet: MigrationWizardParent.sys.mjs maps every non-extension resource to success ? SUCCESS : WARNING, so a resource that imported zero rows can still show as a plain success.

Use the counts to show at least four states per resource:

• imported, with a count
• nothing imported
• partly imported
• not available from this browser

The wizard already has WARNING and INFO states with support links (extensions uses them today), so this should mostly be wiring rather than new UI.

Also needed:

• a content check on the wording for each state
• screen-reader announcement of the partial and nothing-imported states (not conveyed by icon or colour alone)

Phase 1 PRD, item 1: https://docs.google.com/document/d/1BAoZsE5u7FHXx0mmyogSURJkKHNA8gDhMoD2WuB4WOY/edit