feat: data connection administration UI

[alukach]

Summary

• Admin CRUD pages for system data connections at /admin/data-connections/
• Product settings tab for managing data connection mirrors at /edit/product/.../data-connections
• Admins: full create/edit/delete data connections + associate connections with products
• Product owners: read-only view of product mirrors
• Admin dropdown menu link for quick access

Closes #178

Changes

• src/lib/clients/database/data-connections.ts — added delete method
• src/lib/actions/data-connections.ts — server actions for CRUD
• src/lib/actions/product-mirrors.ts — server actions for mirror management
• src/components/features/data-connections/ — DataConnectionForm, DeleteDataConnectionButton, ProductMirrorsManager
• src/app/(app)/admin/ — admin layout + data connections pages (list, create, edit)
• src/app/(app)/edit/product/.../data-connections/ — product mirror settings page
• src/components/layout/AccountDropdown.tsx — admin section with link
• src/lib/urls.ts — new URL helpers

Test plan

• Verify admin can list, create, edit, and delete data connections
• Verify non-admin users cannot access admin pages (redirects to 404)
• Verify admin can add/remove mirrors and set primary on product settings
• Verify product owners see read-only mirror list (no add/remove/set primary)
• Verify admin dropdown shows "Data Connections" link only for admins
• Verify provider switching (S3/Azure) shows correct fields in form
• Verify auth type switching shows correct credential fields

🤖 Generated with Claude Code

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Project	Deployment	Actions	Updated (UTC)
source-cooperative	Ready	Preview, Comment	Mar 31, 2026 10:16pm