- A group whose creator left or was deleted passes to its longest-standing
member (ensureOwner), so it can still be managed.
- Group changes (added / removed / renamed / left) are sent live as
chat_message and never count as unread, here or on the server.
- A disabled account is still named in old chats (people carries
`disabled`) and never offered for a new one; a deleted one reads
'Deleted user' instead of '?'.
- Load older keeps the message being read in place.
- With several tabs open only the first to see a message plays its sound /
system notification (agenthub.chat.notified).
- The people list is read again on New chat and on every room change.
- Uploads go to <data dir>/chat/.incoming/ (multer disk storage) and are
renamed into place — never held in memory; a refused one is removed.
- With the pet hidden, a chat button in the bottom-right corner (ChatDock,
server mode) opens the same window, unread count and new-message card
included.
Delete chat is the caller's alone: the history so far vanishes for them
(chat_members.cleared_id) and a direct chat leaves their list (hidden) until a
new message arrives; the others keep theirs. What EVERY member has deleted is
deleted for real (purge): messages up to the lowest cleared_id and their files
on disk, and a direct chat both people deleted, whole. Purge also runs when a
member leaves or is removed. A group's creator disbands it for everyone
(DELETE /api/chat/rooms/:id).
Seen: rooms carry every member's read mark (reads); a mark that moves is told
to the members (chat_read, exactAudience) and never passes the newest
message. Under your newest message: Seen / Seen by … / Seen by everyone.
A room open on a tab you come back to is marked read then.
Rail: a room — open, mark as read, mute / unmute notifications (per browser,
the unread count still shows), copy name, group settings, leave; the pet and
+ — chat with the pet, new chat, mark all chats as read. A message — copy
text, reply (quotes it into the box), message the sender privately (group),
delete your own (asks first). A file — open in a new tab, download, copy file
name. A group member — message privately, copy name, remove (the creator).
DELETE /api/chat/rooms/:id/messages/:messageId deletes the caller's OWN text
message and its files (403 for anyone else, an admin included) and tells the
members with a chat_deleted frame (exactAudience).
Server mode: a rail beside the pet's chat lists the pet, then the user's
direct chats (one per pair) and groups with unread counts, and + for a new
chat. A room shows its messages (group senders named), loads older pages,
and sends text, pasted / dropped / attached files (<= 10 x 25 MB; images
inline). A group's creator renames it and adds or removes people; anyone may
leave. A blue dot on the pet counts unread messages.
Only a room's members read or write it, an admin included (roomFor → 404).
Files are stored under server-made names in <data dir>/chat/<room>/ and
served to members only under a sandbox CSP + nosniff. chat_message /
chat_room frames reach exactly the ids in `to` (scope.exactAudience).
New tables chat_rooms / chat_members / chat_messages / chat_files (additive).
nntrivi2001