ADR 0048 (2026-09-05) settled that a provider is handed the credential the mesh minted —
sealed to the provider node, unsealed by the host into a 0600 file — and removed the
symmetric seal from the SDK entirely; hq issue 032 records it resolved. The lab-only
MESH_SEAL_KEY injections were tombstones read by nothing: two-node-db went green on the
superuser delivery, not the seal key. Removed, and provider-uses-mesh-credential's
citations corrected from ADR 0053 (a scheduled step) to ADR 0048.
https://claude.ai/code/session_01D6qtiYU3P9jk3pnAXyAFyx