Eng 1650 temporary username in obsidian

[maparent]

Add the username field, propagate it to the PlatformAccount, expose it in the frontmatter, Discourse Context and import modal.
https://www.loom.com/share/9981c436ba894ca0b55482a61b2b382f
After changes:
https://www.loom.com/share/a0be92baadf04615acaafc7f79d7870e

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[linear-code]

ENG-1650 Temporary username in Obsidian

[supabase]

Updates to Preview Branch (eng-1650-temporary-username-in-obsidian) ↗︎

Deployments	Status	Updated
Database	✅	Thu, 23 Apr 2026 16:52:49 UTC
Services	✅	Thu, 23 Apr 2026 16:52:49 UTC
APIs	✅	Thu, 23 Apr 2026 16:52:49 UTC

Tasks are run on every commit but only new migration files are pushed.
Close and reopen this PR if you want to apply changes from existing seed or migration files.

Tasks	Status	Updated
Configurations	✅	Thu, 23 Apr 2026 16:52:50 UTC
Migrations	✅	Thu, 23 Apr 2026 16:52:50 UTC
Seeding	✅	Thu, 23 Apr 2026 16:52:50 UTC
Edge Functions	✅	Thu, 23 Apr 2026 16:52:53 UTC

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[devin-ai-integration]

Devin Review found 1 new potential issue.

View 19 additional findings in Devin Review.

[devin-ai-integration]

🟡 Author names display as 'user {id}' in ImportNodesModal selection step because fetchUserNames is called too late

fetchUserNames is only called inside importSelectedNodes (apps/obsidian/src/utils/importNodes.ts:1245), which runs when the user clicks the final "Import" button. However, getUserNameById is called during the renderSelectStep() in ImportNodesModal.tsx (lines 343 and 367) to display author names before the import happens. At that point, plugin.settings.userNames has not been populated by fetchUserNames, so every author name renders as the fallback user {id} string from apps/obsidian/src/utils/typeUtils.ts:96. The fix is to call fetchUserNames during loadImportableNodes (alongside the existing getSpaceNameFromIds/getSpaceUris calls) so the names are available when the selection UI first renders.

Prompt for agents

The fetchUserNames call on line 1245 of importNodes.ts only runs during importSelectedNodes (the final import step). But getUserNameById is used in ImportNodesModal.tsx renderSelectStep to show author names during the node selection UI, before import happens. At that point plugin.settings.userNames is empty so all names show as 'user {id}'.

To fix this, call fetchUserNames during loadImportableNodes in ImportNodesModal.tsx (around where getSpaceNameFromIds and getSpaceUris are called, circa line 80-97 of ImportNodesModal.tsx). You can also keep the call in importSelectedNodes for the case where importSelectedNodes is called from a different code path. The key thing is ensuring userNames is populated before renderSelectStep renders the author names.

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