0.5.1 — pairing defaults off in setup

Python-only patch. Sidecar binaries are the same as 0.5.0 (not rebuilt).

Highlights

• Setup wizard defaults pairing codes to no. Enter writes vector.unauthorized_dm_behavior: ignore, so unknown npubs are dropped instead of getting a pairing DM. Answer Y to keep the approve-via-code path.

Upgrade from 0.5.0

hermes plugins update vector-platform
hermes gateway setup      # optional; Enter now means pairing off
hermes gateway restart

Full notes: CHANGELOG.md.

Full Changelog: v0.5.0...v0.5.1