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ADR-009: Auth via Lucia

  • Status: Accepted
  • Date: 2026-02-04

Context​

We need authentication compatible with Cloudflare Workers and D1.

Decision​

  • Use Lucia Auth with a Workers + D1 adapter.

Consequences​

  • Session management and user identity are standardized.
  • Auth schema lives primarily in tn-sessions.

Alternatives considered​

  • Roll our own auth: too risky.