point atproto at federation sandbox, fix notif poll by importing all protocols

app.yaml

@@ -23,17 +23,16 @@ inbound_services:
 
 env_variables:
   PDS_HOST: fed.brid.gy
-  PLC_WRITE_HOST: plc.bsky-sandbox.dev
 
-  # # sandbox
-  # PLC_HOST: plc.bsky-sandbox.dev
-  # APPVIEW_HOST: api.bsky-sandbox.dev
-  # BGS_HOST: bgs.bsky-sandbox.dev
+  # sandbox
+  PLC_HOST: plc.bsky-sandbox.dev
+  APPVIEW_HOST: api.bsky-sandbox.dev
+  BGS_HOST: bgs.bsky-sandbox.dev
 
-  # prod
-  PLC_HOST: plc.directory
-  APPVIEW_HOST: api.bsky.app
-  BGS_HOST: bsky.network
+  # # prod
+  # PLC_HOST: plc.directory
+  # APPVIEW_HOST: api.bsky.app
+  # BGS_HOST: bsky.network
 
 handlers:
 

hub.py

@@ -23,7 +23,8 @@ from oauth_dropins.webutil import (
 )
 import requests
 
-import atproto  # atproto-poll-notifs task handler
+# all protocols, and atproto-poll-notifs task handler
+import activitypub, atproto, web
 from common import USER_AGENT
 import models