Search across all archived conversations (assistant and agent) for the authenticated user.

Overview:

Performs a case-insensitive substring match against conversation titles and message content across both assistant (Conversation) and agent (AgentConversation) archived collections. Results are merged server-side and sorted by lastActivityAt descending.

Search parameter:

The search query parameter is required, must contain a non-space character, and is capped at 1000 characters; it is trimmed before use. Requests that omit it, send only spaces or exceed the cap return 400 VALIDATION_ERROR. A value holding markup or a printf-style format specifier (such as %s) is refused by the controller with 400 HTTP_BAD_REQUEST.

Query parameters not listed here are dropped by the validator and ignored.

Pagination:

Results are paginated using page and limit. The response includes a pagination block with total counts and a summary block that breaks matches down by source.

Item shape:

Each item is a conversation list entry (no messages payload — that field is omitted for performance) tagged with source, plus computed isOwner, accessLevel, archivedAt, and archivedBy. agentKey is present only when source is agent.