Two invariants only a live homeserver can check, now enforced rather
than verified by hand:
- The configured NISSE_MATRIX_USER_ID must be the token's real owner.
MatrixTransport filters its own messages by comparing sender to that
value, so a mismatch would make the bot read its own posts as
operator input.
- The account must be a testing identity, so a stray live run can
never act as the production agent.
Both hold today; this keeps them holding when the production
nisse-dev account is created.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
dongarandClaude Opus 5