Pre-release: Complete admin organization create/edit fields audit

[wauputr4]

Goal

Close the release gap between organization fields available in the data model/API and what admins can create or edit from supported workflows.

Scope

• Audit organization fields in migrations, repository input, API responses, CLI, and admin UI.
• Identify required release fields that are missing from create/edit workflows.
• Add or align admin create/edit form controls for supported fields.
• Ensure validation and error states are clear for required/invalid fields.
• Document any intentionally deferred fields as follow-up issues instead of silent gaps.

Definition of done

• Admins can add organizations with all release-critical fields through a supported workflow.
• Field gaps are either implemented or explicitly tracked.
• go test ./..., npm run check --prefix web, and npm run build --prefix web pass.