Modules/Public/New-S2DDiagram.ps1

function New-S2DDiagram {
    <#
    .SYNOPSIS
        Generates SVG diagrams for capacity waterfall, disk-node map, pool layout, and resiliency.
 
    .DESCRIPTION
        Phase 4 — Not yet implemented.
 
        Diagram types:
          Waterfall — 8-stage capacity waterfall horizontal/vertical bar diagram
          DiskNodeMap — Node boxes with disks color-coded by role and health
          PoolLayout — Pool allocation pie/stacked bar with reserve and infra volume
          Resiliency — Per-volume fault domain copy distribution
          HealthCard — Traffic-light SVG health scorecard
          TiBTBReference — Common drive sizes in both units
    #>

    [CmdletBinding()]
    param(
        [Parameter(ValueFromPipeline)]
        [object] $InputObject,

        [Parameter()]
        [ValidateSet('Waterfall', 'DiskNodeMap', 'PoolLayout', 'Resiliency', 'HealthCard', 'TiBTBReference', 'All')]
        [string[]] $DiagramType = 'All',

        [Parameter()]
        [string] $OutputPath
    )

    throw "New-S2DDiagram is not implemented yet. This is a Phase 4 deliverable. See the project plan for the roadmap."
}