// Package protocol defines shared types and wire formats for toolsrv communication.
//
// These types are used by both olliesrv (toolclient) and toolsrv to ensure
// consistent serialization of tool metadata, results, and requests.
//
// # Types
//
//   - ToolInfo: tool metadata sent from toolsrv to olliesrv
//   - ToolResult: structured result from tool execution
//   - ToolResultContent: single content item (text or image)
//   - BypassRequest: sandbox bypass request
//
// # Payload Format
//
// Tool execution uses a key=value payload format over 9P:
//
//	token=<session-token>
//	tool=<name>
//	agent=<agent-id>
//	path=/some/path
//	content=escaped\nvalue
//
// Values are escaped: \n for newlines, \\ for backslashes. ParsePayload
// and escaping helpers handle the conversion.
package protocol