add_comment should accept image attachments (Core API already supports this)

We use Front MCP (mcp.frontapp.com) from an inbox agent (Pit Bot / grok@xxx.com) 

Workflow: a teammate @mentions the agent in a Front comment and asks for a fairing-kit mockup. The agent generates a PNG and needs to post it as an internal comment on that same conversation, visible to CS, not to the customer.

What we tried: add_comment with conversationId + body. The MCP schema only has those two fields. get_attachment can download comment images, but nothing can upload them.

What we expected: add_comment to take an attachments list, same as Core API POST /conversations/{id}/comments which already documents attachments as multipart/form-data, max 25 MB (https://dev.frontapp.com/docs/attachments-1). Teammates already attach images to comments in the Front UI (we do this daily with color swatches).

What happened: we can only post text. We have to drop the mockup in a side chat and ask a human to attach it on the thread. That breaks the workflow.

Ask: please add an attachments argument on add_comment (and ideally create_draft too) so the MCP can send the same multipart comment the Core API already accepts, posted as the authenticated teammate.