Rate limits on accounts and inboxes, a database dump before every deploy

- Sign-up, login, the invitation flows and password recovery allow ten
  requests a minute per client address; the inboxes give each sending
  origin (the keyId's) a bucket of 300 that refills at 300 a minute, and
  answer 429 beyond it, which peers retry.
- deploy.yml dumps the PrivaPub database to /var/backups before it stops
  the service (the last seven are kept), and after the swap checks that
  Swagger answers 404 and that the shared inbox answers junk with 400 and
  an unsigned activity with 401.
- ActivityPubClient and PostBoost, never used, are gone.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_012CzABvBkbcFqoHdmi8b9WB

.gitea/workflows/deploy.yml

@@ -12,6 +12,8 @@ env:
   BACKUPS: /var/backups/privapub.thepra.dev
   LOCAL_URL: http://127.0.0.1:6970
   PUBLIC_URL: https://privapub.thepra.dev
+  MONGO_URI: mongodb://127.0.0.1:27022
+  MONGO_DB: PrivaPub
 
 jobs:
   site:
@@ -55,6 +57,13 @@ jobs:
           echo "SNAPSHOT=$BACKUPS/site-$STAMP" >> "$GITHUB_ENV"
           ls -1dt "$BACKUPS"/site-* 2>/dev/null | tail -n +4 | xargs -r rm -rf || true
 
+      - name: Dump the database
+        run: |
+          DUMP="$BACKUPS/mongo-$(date +%Y%m%d-%H%M%S).archive.gz"
+          mongodump --quiet --uri "$MONGO_URI" --db "$MONGO_DB" --gzip --archive="$DUMP"
+          echo "::notice::database dumped to $DUMP ($(du -h "$DUMP" | cut -f1))"
+          ls -1t "$BACKUPS"/mongo-*.archive.gz 2>/dev/null | tail -n +8 | xargs -r rm -f || true
+
       - name: Stop, sync, start
         run: |
           sudo systemctl stop "$UNIT"
@@ -88,4 +97,11 @@ jobs:
           [ "$code" = "200" ] || { echo "::error::the instance actor answered $code"; exit 1; }
           code=$(curl -s -o /dev/null -w '%{http_code}' "$PUBLIC_URL/.well-known/nodeinfo")
           [ "$code" = "200" ] || { echo "::error::nodeinfo answered $code"; exit 1; }
+          code=$(curl -s -o /dev/null -w '%{http_code}' "$PUBLIC_URL/swagger/index.html")
+          [ "$code" = "404" ] || { echo "::error::swagger answered $code in production"; exit 1; }
+          code=$(curl -s -o /dev/null -w '%{http_code}' -X POST -H 'Content-Type: application/activity+json' --data '{"junk":' "$PUBLIC_URL/human-centipede")
+          [ "$code" = "400" ] || { echo "::error::a junk inbox POST answered $code"; exit 1; }
+          code=$(curl -s -o /dev/null -w '%{http_code}' -X POST -H 'Content-Type: application/activity+json' \
+            --data '{"type":"Follow","actor":"https://example.org/users/x","object":"'"$PUBLIC_URL"'/peasants/privapub"}' "$PUBLIC_URL/human-centipede")
+          [ "$code" = "401" ] || { echo "::error::an unsigned inbox POST answered $code"; exit 1; }
           echo "::notice::serving $served"