Add fediverse social features: followers/following lists, actor timelines

Adds get_followers_paginated and get_actor_timeline to FederationService
protocol + SQL implementation + stubs. Includes accumulated federation
changes: models, DTOs, delivery handler, webfinger, inline publishing,
widget nav templates, and migration.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

services/federation_publish.py

@@ -8,6 +8,7 @@ which creates the APActivity in the same DB transaction.  AP delivery
 from __future__ import annotations
 
 import logging
+import os
 
 from sqlalchemy.ext.asyncio import AsyncSession
 
@@ -48,10 +49,20 @@ async def try_publish(
     if existing:
         if activity_type == "Create" and existing.activity_type != "Delete":
             return  # already published (allow re-Create after Delete/unpublish)
+        if activity_type == "Update" and existing.activity_type == "Update":
+            return  # already updated (Ghost fires duplicate webhooks)
         if activity_type == "Delete" and existing.activity_type == "Delete":
             return  # already deleted
-    elif activity_type == "Delete":
-        return  # never published, nothing to delete
+    elif activity_type in ("Delete", "Update"):
+        return  # never published, nothing to delete/update
+
+    # Stable object ID: same source always gets the same object id so
+    # Mastodon treats Create/Update/Delete as the same post.
+    domain = os.getenv("AP_DOMAIN", "rose-ash.com")
+    object_data["id"] = (
+        f"https://{domain}/users/{actor.preferred_username}"
+        f"/objects/{source_type.lower()}/{source_id}"
+    )
 
     try:
         await services.federation.publish_activity(

services/stubs.py

@@ -227,5 +227,71 @@ class StubFederationService:
     async def remove_follower(self, session, username, follower_acct):
         return False
 
+    async def get_or_fetch_remote_actor(self, session, actor_url):
+        return None
+
+    async def search_remote_actor(self, session, acct):
+        return None
+
+    async def send_follow(self, session, local_username, remote_actor_url):
+        raise RuntimeError("FederationService not available")
+
+    async def get_following(self, session, username, page=1, per_page=20):
+        return [], 0
+
+    async def get_followers_paginated(self, session, username, page=1, per_page=20):
+        return [], 0
+
+    async def accept_follow_response(self, session, local_username, remote_actor_url):
+        pass
+
+    async def unfollow(self, session, local_username, remote_actor_url):
+        pass
+
+    async def ingest_remote_post(self, session, remote_actor_id, activity_json, object_json):
+        pass
+
+    async def delete_remote_post(self, session, object_id):
+        pass
+
+    async def get_remote_post(self, session, object_id):
+        return None
+
+    async def get_home_timeline(self, session, actor_profile_id, before=None, limit=20):
+        return []
+
+    async def get_public_timeline(self, session, before=None, limit=20):
+        return []
+
+    async def get_actor_timeline(self, session, remote_actor_id, before=None, limit=20):
+        return []
+
+    async def create_local_post(self, session, actor_profile_id, content, visibility="public", in_reply_to=None):
+        raise RuntimeError("FederationService not available")
+
+    async def delete_local_post(self, session, actor_profile_id, post_id):
+        raise RuntimeError("FederationService not available")
+
+    async def like_post(self, session, actor_profile_id, object_id, author_inbox):
+        pass
+
+    async def unlike_post(self, session, actor_profile_id, object_id, author_inbox):
+        pass
+
+    async def boost_post(self, session, actor_profile_id, object_id, author_inbox):
+        pass
+
+    async def unboost_post(self, session, actor_profile_id, object_id, author_inbox):
+        pass
+
+    async def get_notifications(self, session, actor_profile_id, before=None, limit=20):
+        return []
+
+    async def unread_notification_count(self, session, actor_profile_id):
+        return 0
+
+    async def mark_notifications_read(self, session, actor_profile_id):
+        pass
+
     async def get_stats(self, session):
         return {"actors": 0, "activities": 0, "followers": 0}