One delivery a server; BookWyrm 0.9.3 in the pasture

An activity now goes once to each server, to its shared inbox when it has one, for the accounts a post names, answers
or quotes as for its followers, as Mastodon delivers (a circle post excepted: each member's copy names that member).
BookWyrm took the same post twice when one copy reached its shared inbox and another the named account's inbox at once.
SharedInboxTests checks a reply to a follower's post goes once.

BookWyrm joins the pasture (peers/bookwyrm.sh: its image on the shared Postgres and Redis, gunicorn and a Celery worker,
its user, book and statuses made in its Django shell). scenarios/bookwyrm.sh: follows both ways, a review, a comment and
a quotation reaching alice as BookWyrm's pure posts, her like, boost and reply landing there, her post naming bwuser and
bwuser's like and reply, a deletion, the unfollow and statistics: 20 checks. GoToSocial (64), Mastodon (57) and Misskey
(35) still pass.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01LsXgEaXee4GCU1hwYgPJXw

tools/pasture/Caddyfile

@@ -108,6 +108,11 @@ nodebb.test {
 	reverse_proxy pasture-nodebb:4567
 }
 
+bookwyrm.test {
+	tls internal
+	reverse_proxy pasture-bookwyrm:8000
+}
+
 ghost.test {
 	tls internal
 	handle /.ghost/activitypub/* {