Consolidate Extensions domain ownership in API

[admdly]

Summary

Consolidates the Extensions domain under the API Worker, including the users projection and the complete D1 migration chain.

Changes

• Add a self-contained API migration baseline for the legacy catalogue and users schema, plus the deleted_at tombstone migration.
• Model the complete API-owned users table and remove the external-table placeholder.
• Add authenticated account projection, identity synchronization, profile, deletion, owner-profile, and owned-extension operations.
• Enforce active-user authorization for domain mutations and preserve OIDC reactivation of deleted subjects.
• Make account deletion transactional and guarded, including pending-work rejection, PII clearing, disposable ownership cleanup, and audit-history preservation.
• Expose the non-identifying unclaimed developer field publicly.
• Keep existing v1/v2 HTTPS endpoints and DB_EXTENSIONS binding.

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Status	Name	Latest Commit	Preview URL	Updated (UTC)
✅ Deployment successful! View logs	api	62b3d4a	Commit Preview URL Branch Preview URL	Aug 05 2026, 03:37 PM

[cubic-dev-ai]

All reported issues were addressed across 26 files

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[cubic-dev-ai]

All reported issues were addressed across 17 files (changes from recent commits).

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[cubic-dev-ai]

0 issues found across 1 file (changes from recent commits).

<sub>Requires human review: Adds D1 schema migrations (0000 bootstrap, 0019 tombstone) and moves DB ownership across repos, plus auth/authorization and API-contract changes (active-account enforcement, identity-sync endpoint, new public unclaimed field). These data and security tradeoffs need human sign-off.

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[cubic-dev-ai]

All reported issues were addressed across 8 files (changes from recent commits).

<sub>Tip: Review your code locally with the cubic CLI to iterate faster.

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[cubic-dev-ai]

0 issues found across 4 files (changes from recent commits).

<sub>Requires human review: Auto-approval blocked by 1 unresolved issue from previous reviews.

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[cubic-dev-ai]

0 issues found across 3 files (changes from recent commits).

<sub>Requires human review: Consolidates domain ownership with new DB migrations, schema changes, and auth middleware; human review required for architectural and operational tradeoffs.

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