Partial diff: added / removed operations, renames, and spec-info fields. Nested schema changes are not tracked yet.

2026-08-1668615c2feat: enhance conversation API documentation with detailed error response and parameter validation

Description changedgetPreviousConversation"Returns all non-deleted conversations for a contact in the current workspace, including open and closed." → "Returns all non-deleted conversations for a contact in the current workspace, including open and closed. "

2026-08-16a976c05feat:update conversation API description and parameter details to remove redundant mongo id warnings

Description changedgetPreviousConversation"Returns all non-deleted conversations for a contact in the current workspace, including open and closed. The query parameter id is the contact's contactServiceId, not a conversation id." → "Returns all non-deleted conversations for a contact in the current workspace, including open and closed."

2026-08-16cf47011feat: update conversation retrieval endpoint summary and description for clarity

Summary changedgetPreviousConversation"Get Previous Conversation" → "List Conversations by Contact"
Description changedgetPreviousConversation"Retrieves previous conversation details for a specific contact." → "Returns all non-deleted conversations for a contact in the current workspace, including open and closed. The query parameter id is the contact's contactServiceId, not a conversation id."

2026-08-065d939e8feat: standardize API error responses, update WhatsApp template request schema, and refine documentation models