support bot, bots: paginate chat scan (#6935)

* bots: document APIGetChats command and CRApiChats response

* bots: regenerate API docs and TypeScript types

* simplex-chat-nodejs: add apiGetChats

* support bot: avoid OOM on large databases

apiListGroups / apiListContacts return every record in one response and
overflow V8's string allocation on large DBs. Replace list-then-find-by-id
patterns with apiGetChat(type, id, 0) lookups, and the one genuine scan
(refreshAllCards) with paginated apiGetChats, count=1000.

* support bot: update test assertions to match current message text

* bots: simplify PaginationByTime, expose only PTLast

* simplex-chat-nodejs: bump types and nodejs versions

bots/src/API/Docs/Commands.hs

@@ -144,6 +144,7 @@ chatCommandsDocsData =
       "Commands to list and delete conversations.",
       [ ("APIListContacts", [], "Get contacts.", ["CRContactsList", "CRChatCmdError"], [], Nothing, "/_contacts " <> Param "userId"),
         ("APIListGroups", [], "Get groups.", ["CRGroupsList", "CRChatCmdError"], [], Nothing, "/_groups " <> Param "userId" <> Optional "" (" @" <> Param "$0") "contactId_" <> Optional "" (" " <> Param "$0") "search"),
+        ("APIGetChats", [], "Get chat previews. Supports time-based pagination — use this instead of APIListContacts / APIListGroups when scanning at scale (those load every record into memory and fail on large databases).", ["CRApiChats", "CRChatCmdError"], [], Nothing, "/_get chats " <> Param "userId" <> OnOffParam "pcc" "pendingConnections" (Just False) <> " " <> Param "pagination" <> " " <> Json "query"),
         ("APIDeleteChat", [], "Delete chat.", ["CRContactDeleted", "CRContactConnectionDeleted", "CRGroupDeletedUser", "CRChatCmdError"], [], Just UNBackground, "/_delete " <> Param "chatRef" <> " " <> Param "chatDeleteMode"),
         ("APISetGroupCustomData", [], "Set group custom data.", ["CRCmdOk", "CRChatCmdError"], [], Nothing, "/_set custom #" <> Param "groupId" <> Optional "" (" " <> Json "$0") "customData"),
         ("APISetContactCustomData", [], "Set contact custom data.", ["CRCmdOk", "CRChatCmdError"], [], Nothing, "/_set custom @" <> Param "contactId" <> Optional "" (" " <> Json "$0") "customData"),
@@ -357,7 +358,6 @@ undocumentedCommands =
     "APIGetChatItemInfo",
     "APIGetChatItems",
     "APIGetChatItemTTL",
-    "APIGetChats",
     "APIGetChatTags",
     "APIGetConnNtfMessages",
     "APIGetContactCode",