invite_user_id mapped every 403 M_FORBIDDEN to Ok(()). The membership
pre-check already skips invited/joined users, so the 403s that reach the
POST are mostly real refusals (banned target, sender without power),
including `hivectl matrix invite`. A 403 is now success only when a
membership re-read shows the user invited or joined; otherwise it is an
error carrying the status and body.
admin_room_send_and_poll read the send response's event_id with
unwrap_or_default() and, when it was missing, walked every recent event
unanchored, so an older bot reply (an earlier reset password) could be
returned as this command's result. A send response without an event_id
is now an error.
run_destroy_bookkeeping discarded fail_pending_for_agent's error; it now
warns like its neighbouring steps.
ensure_config_pr_webhook returned as soon as a hook with the target URL
existed, so a regenerated webhook-secret never reached Forgejo and every
config-PR delivery failed HMAC until the 5-minute poll caught up.
Forgejo's edit-hook API ignores `secret` and never returns it, so the
SHA-256 of the secret last registered is recorded at
forge/config-pr-webhook-secret-sha256; when it doesn't match, the
same-URL hook is deleted and recreated. The paths.rs doc claiming
re-registration on change now describes this.
Refs #4723
bfd8189900