feat: add online presence tracking with last_seen column and configurable timeout

Add `last_seen` column to users table with index, implement `set_last_seen` and `get_online_users` database functions, expose presence config env vars (`PRESENCE_TIMEOUT_SECONDS`, `PRESENCE_ONLINE_LIMIT`, `PRESENCE_ONLINE_MARGIN_SECONDS`), include `last_seen` in follow list responses, and update profile docs to mention online indicator.
2026-07-04 22:08:20 +00:00
parent 7002b23eeb
commit 0f872336b1
41 changed files with 935 additions and 94 deletions
@@ -113,6 +113,7 @@ class FeedOut(_Out):
    total_gists: Optional[int] = None
    top_authors: list[UserOut] = []
    daily_topic: Optional[Any] = None
+    online_users: list[UserOut] = []


 class PostDetailOut(_Out):