MCP tools

`semantic_search_emails`

json

{
  "tool": "semantic_search_emails",
  "arguments": {
    "query": "budget concerns for Q4",
    "limit": 20,
    "similarity_threshold": 0.7
  }
}

`find_related_emails`

json

{
  "tool": "find_related_emails",
  "arguments": {
    "uid": 12345,
    "limit": 10
  }
}

`get_embedding_status`

json

{
  "tool": "get_embedding_status"
}