<mxfile host="app.diagrams.net" agent="architecture-diagram" version="24.0.0">
  <diagram name="Control-Plane Data Model" id="12-control-plane-data-model">
    <mxGraphModel dx="1400" dy="900" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="1700" pageHeight="940" math="0" shadow="0">
      <root>
        <mxCell id="0" />
        <mxCell id="1" parent="0" />
        <mxCell id="n.tenant" value="&lt;b&gt;tenant&lt;/b&gt;&lt;br&gt;&lt;font style=&quot;font-size:10px;color:#5b6b7d&quot;&gt;tenant_id  PK&lt;br&gt;region  (residency pin)&lt;br&gt;egress_posture&lt;br&gt;idle_timeout_s&lt;br&gt;spend_ceiling&lt;/font&gt;" style="rounded=1;arcSize=4;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontColor=#1e3a1e;fontSize=12;fontFamily=Segoe UI;verticalAlign=top;align=left;spacingLeft=12;spacingTop=7;spacingRight=10;" vertex="1" parent="1">
          <mxGeometry x="40" y="80" width="340" height="120" as="geometry" />
        </mxCell>
        <mxCell id="n.repo" value="&lt;b&gt;repository_binding&lt;/b&gt;&lt;br&gt;&lt;font style=&quot;font-size:10px;color:#5b6b7d&quot;&gt;binding_id  PK&lt;br&gt;tenant_id  FK&lt;br&gt;forge_repo&lt;br&gt;scopes_granted&lt;/font&gt;" style="rounded=1;arcSize=4;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontColor=#1e3a1e;fontSize=12;fontFamily=Segoe UI;verticalAlign=top;align=left;spacingLeft=12;spacingTop=7;spacingRight=10;" vertex="1" parent="1">
          <mxGeometry x="470" y="80" width="340" height="100" as="geometry" />
        </mxCell>
        <mxCell id="n.envdef" value="&lt;b&gt;environment_definition&lt;/b&gt;&lt;br&gt;&lt;font style=&quot;font-size:10px;color:#5b6b7d&quot;&gt;definition_rev  PK&lt;br&gt;binding_id  FK&lt;br&gt;image_digest&lt;br&gt;lockfile_hash&lt;br&gt;machine_class&lt;/font&gt;" style="rounded=1;arcSize=4;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontColor=#1e3a1e;fontSize=12;fontFamily=Segoe UI;verticalAlign=top;align=left;spacingLeft=12;spacingTop=7;spacingRight=10;" vertex="1" parent="1">
          <mxGeometry x="890" y="80" width="340" height="120" as="geometry" />
        </mxCell>
        <mxCell id="n.prebuild" value="&lt;b&gt;prebuild&lt;/b&gt;&lt;br&gt;&lt;font style=&quot;font-size:10px;color:#5b6b7d&quot;&gt;prebuild_id  PK&lt;br&gt;definition_rev  FK&lt;br&gt;commit&lt;br&gt;artefact_digest&lt;br&gt;valid  bool&lt;/font&gt;" style="rounded=1;arcSize=4;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontColor=#1e3a1e;fontSize=12;fontFamily=Segoe UI;verticalAlign=top;align=left;spacingLeft=12;spacingTop=7;spacingRight=10;" vertex="1" parent="1">
          <mxGeometry x="1320" y="80" width="340" height="120" as="geometry" />
        </mxCell>
        <mxCell id="n.principal" value="&lt;b&gt;principal&lt;/b&gt;&lt;br&gt;&lt;font style=&quot;font-size:10px;color:#5b6b7d&quot;&gt;principal_id  PK&lt;br&gt;tenant_id  FK&lt;br&gt;class  human | agent&lt;br&gt;seat_state&lt;br&gt;concurrency_limit&lt;/font&gt;" style="rounded=1;arcSize=4;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontColor=#1e3a1e;fontSize=12;fontFamily=Segoe UI;verticalAlign=top;align=left;spacingLeft=12;spacingTop=7;spacingRight=10;" vertex="1" parent="1">
          <mxGeometry x="40" y="340" width="340" height="120" as="geometry" />
        </mxCell>
        <mxCell id="n.ws" value="&lt;b&gt;workspace&lt;/b&gt;&lt;br&gt;&lt;font style=&quot;font-size:10px;color:#5b6b7d&quot;&gt;workspace_id  PK&lt;br&gt;binding_id  FK&lt;br&gt;definition_rev  FK&lt;br&gt;state&lt;br&gt;last_resume_at&lt;/font&gt;" style="rounded=1;arcSize=4;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontColor=#1e3a1e;fontSize=12;fontFamily=Segoe UI;verticalAlign=top;align=left;spacingLeft=12;spacingTop=7;spacingRight=10;" vertex="1" parent="1">
          <mxGeometry x="470" y="340" width="340" height="120" as="geometry" />
        </mxCell>
        <mxCell id="n.inc" value="&lt;b&gt;incarnation&lt;/b&gt;&lt;br&gt;&lt;font style=&quot;font-size:10px;color:#5b6b7d&quot;&gt;incarnation_id  PK&lt;br&gt;workspace_id  FK&lt;br&gt;host_id  FK&lt;br&gt;started_at&lt;br&gt;ended_reason&lt;/font&gt;" style="rounded=1;arcSize=4;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontColor=#1e3a1e;fontSize=12;fontFamily=Segoe UI;verticalAlign=top;align=left;spacingLeft=12;spacingTop=7;spacingRight=10;" vertex="1" parent="1">
          <mxGeometry x="890" y="340" width="340" height="120" as="geometry" />
        </mxCell>
        <mxCell id="n.snap" value="&lt;b&gt;snapshot&lt;/b&gt;&lt;br&gt;&lt;font style=&quot;font-size:10px;color:#5b6b7d&quot;&gt;snapshot_id  PK&lt;br&gt;workspace_id  FK&lt;br&gt;content_digest&lt;br&gt;has_memory  bool&lt;br&gt;bytes&lt;/font&gt;" style="rounded=1;arcSize=4;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontColor=#1e3a1e;fontSize=12;fontFamily=Segoe UI;verticalAlign=top;align=left;spacingLeft=12;spacingTop=7;spacingRight=10;" vertex="1" parent="1">
          <mxGeometry x="1320" y="340" width="340" height="120" as="geometry" />
        </mxCell>
        <mxCell id="n.audit" value="&lt;b&gt;audit_event&lt;/b&gt;&lt;br&gt;&lt;font style=&quot;font-size:10px;color:#5b6b7d&quot;&gt;event_id  PK&lt;br&gt;actor_principal  FK&lt;br&gt;workspace_id&lt;br&gt;action&lt;br&gt;reason  (immutable)&lt;/font&gt;" style="rounded=1;arcSize=4;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontColor=#1e3a1e;fontSize=12;fontFamily=Segoe UI;verticalAlign=top;align=left;spacingLeft=12;spacingTop=7;spacingRight=10;" vertex="1" parent="1">
          <mxGeometry x="40" y="600" width="340" height="120" as="geometry" />
        </mxCell>
        <mxCell id="n.sess" value="&lt;b&gt;session&lt;/b&gt;&lt;br&gt;&lt;font style=&quot;font-size:10px;color:#5b6b7d&quot;&gt;session_id  PK&lt;br&gt;incarnation_id  FK&lt;br&gt;principal_id  FK&lt;br&gt;attached_by&lt;br&gt;diff_ref&lt;/font&gt;" style="rounded=1;arcSize=4;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontColor=#1e3a1e;fontSize=12;fontFamily=Segoe UI;verticalAlign=top;align=left;spacingLeft=12;spacingTop=7;spacingRight=10;" vertex="1" parent="1">
          <mxGeometry x="470" y="600" width="340" height="120" as="geometry" />
        </mxCell>
        <mxCell id="n.host" value="&lt;b&gt;host&lt;/b&gt;&lt;br&gt;&lt;font style=&quot;font-size:10px;color:#5b6b7d&quot;&gt;host_id  PK&lt;br&gt;rack · region&lt;br&gt;kernel_version&lt;br&gt;state  live | draining&lt;br&gt;oversub_ratio&lt;/font&gt;" style="rounded=1;arcSize=4;whiteSpace=wrap;html=1;fillColor=#d5e8d4;strokeColor=#82b366;fontColor=#1e3a1e;fontSize=12;fontFamily=Segoe UI;verticalAlign=top;align=left;spacingLeft=12;spacingTop=7;spacingRight=10;" vertex="1" parent="1">
          <mxGeometry x="890" y="600" width="340" height="120" as="geometry" />
        </mxCell>
        <mxCell id="_r1" value="1 : N" style="edgeStyle=orthogonalEdgeStyle;rounded=1;html=1;endArrow=ERmany;endFill=0;startArrow=ERone;startFill=0;strokeWidth=1.4;strokeColor=#5a6570;fontSize=10;fontColor=#42536a;labelBackgroundColor=#ffffff;fontFamily=Segoe UI;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;" edge="1" parent="1" source="n.tenant" target="n.repo">
          <mxGeometry relative="1" as="geometry" />
        </mxCell>
        <mxCell id="_r2" value="1 : N" style="edgeStyle=orthogonalEdgeStyle;rounded=1;html=1;endArrow=ERmany;endFill=0;startArrow=ERone;startFill=0;strokeWidth=1.4;strokeColor=#5a6570;fontSize=10;fontColor=#42536a;labelBackgroundColor=#ffffff;fontFamily=Segoe UI;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;" edge="1" parent="1" source="n.repo" target="n.envdef">
          <mxGeometry relative="1" as="geometry" />
        </mxCell>
        <mxCell id="_r3" value="1 : N" style="edgeStyle=orthogonalEdgeStyle;rounded=1;html=1;endArrow=ERmany;endFill=0;startArrow=ERone;startFill=0;strokeWidth=1.4;strokeColor=#5a6570;fontSize=10;fontColor=#42536a;labelBackgroundColor=#ffffff;fontFamily=Segoe UI;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;" edge="1" parent="1" source="n.envdef" target="n.prebuild">
          <mxGeometry relative="1" as="geometry" />
        </mxCell>
        <mxCell id="_r4" value="1 : N" style="edgeStyle=orthogonalEdgeStyle;rounded=1;html=1;endArrow=ERmany;endFill=0;startArrow=ERone;startFill=0;strokeWidth=1.4;strokeColor=#5a6570;fontSize=10;fontColor=#42536a;labelBackgroundColor=#ffffff;fontFamily=Segoe UI;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="n.tenant" target="n.principal">
          <mxGeometry relative="1" as="geometry" />
        </mxCell>
        <mxCell id="_r5" value="1 : N" style="edgeStyle=orthogonalEdgeStyle;rounded=1;html=1;endArrow=ERmany;endFill=0;startArrow=ERone;startFill=0;strokeWidth=1.4;strokeColor=#5a6570;fontSize=10;fontColor=#42536a;labelBackgroundColor=#ffffff;fontFamily=Segoe UI;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;" edge="1" parent="1" source="n.principal" target="n.ws">
          <mxGeometry relative="1" as="geometry" />
        </mxCell>
        <mxCell id="_r6" value="1 : N" style="edgeStyle=orthogonalEdgeStyle;rounded=1;html=1;endArrow=ERmany;endFill=0;startArrow=ERone;startFill=0;strokeWidth=1.4;strokeColor=#5a6570;fontSize=10;fontColor=#42536a;labelBackgroundColor=#ffffff;fontFamily=Segoe UI;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="n.repo" target="n.ws">
          <mxGeometry relative="1" as="geometry" />
        </mxCell>
        <mxCell id="_r7" value="1 : N" style="edgeStyle=orthogonalEdgeStyle;rounded=1;html=1;endArrow=ERmany;endFill=0;startArrow=ERone;startFill=0;strokeWidth=1.4;strokeColor=#5a6570;fontSize=10;fontColor=#42536a;labelBackgroundColor=#ffffff;fontFamily=Segoe UI;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;" edge="1" parent="1" source="n.ws" target="n.inc">
          <mxGeometry relative="1" as="geometry" />
        </mxCell>
        <mxCell id="_r8" value="1 : N" style="edgeStyle=orthogonalEdgeStyle;rounded=1;html=1;endArrow=ERmany;endFill=0;startArrow=ERone;startFill=0;strokeWidth=1.4;strokeColor=#5a6570;fontSize=10;fontColor=#42536a;labelBackgroundColor=#ffffff;fontFamily=Segoe UI;exitX=1;exitY=0.5;exitDx=0;exitDy=0;entryX=0;entryY=0.5;entryDx=0;entryDy=0;" edge="1" parent="1" source="n.inc" target="n.snap">
          <mxGeometry relative="1" as="geometry" />
        </mxCell>
        <mxCell id="_r9" value="1 : N" style="edgeStyle=orthogonalEdgeStyle;rounded=1;html=1;endArrow=ERmany;endFill=0;startArrow=ERone;startFill=0;strokeWidth=1.4;strokeColor=#5a6570;fontSize=10;fontColor=#42536a;labelBackgroundColor=#ffffff;fontFamily=Segoe UI;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="n.ws" target="n.sess">
          <mxGeometry relative="1" as="geometry" />
        </mxCell>
        <mxCell id="_r10" value="1 : N" style="edgeStyle=orthogonalEdgeStyle;rounded=1;html=1;endArrow=ERmany;endFill=0;startArrow=ERone;startFill=0;strokeWidth=1.4;strokeColor=#5a6570;fontSize=10;fontColor=#42536a;labelBackgroundColor=#ffffff;fontFamily=Segoe UI;exitX=0.5;exitY=0;exitDx=0;exitDy=0;entryX=0.5;entryY=1;entryDx=0;entryDy=0;" edge="1" parent="1" source="n.host" target="n.inc">
          <mxGeometry relative="1" as="geometry" />
        </mxCell>
        <mxCell id="_r11" value="1 : N" style="edgeStyle=orthogonalEdgeStyle;rounded=1;html=1;endArrow=ERmany;endFill=0;startArrow=ERone;startFill=0;strokeWidth=1.4;strokeColor=#5a6570;fontSize=10;fontColor=#42536a;labelBackgroundColor=#ffffff;fontFamily=Segoe UI;exitX=0.5;exitY=1;exitDx=0;exitDy=0;entryX=0.5;entryY=0;entryDx=0;entryDy=0;" edge="1" parent="1" source="n.principal" target="n.audit">
          <mxGeometry relative="1" as="geometry" />
        </mxCell>
        <mxCell id="title" value="Control-Plane Data Model" style="text;html=1;strokeColor=none;fillColor=none;align=left;verticalAlign=middle;whiteSpace=wrap;fontSize=20;fontStyle=1;fontColor=#16202c;fontFamily=Segoe UI;" vertex="1" parent="1">
          <mxGeometry x="40" y="20" width="1610" height="30" as="geometry" />
        </mxCell>
        <mxCell id="rule" value="" style="line;strokeWidth=1;html=1;strokeColor=#c9d3de;" vertex="1" parent="1">
          <mxGeometry x="40" y="50" width="1610" height="10" as="geometry" />
        </mxCell>
        <mxCell id="note" value="A workspace has many incarnations and many snapshots, and no host: the host appears only on an incarnation." style="text;html=1;strokeColor=none;fillColor=none;align=left;verticalAlign=middle;whiteSpace=wrap;fontSize=10;fontColor=#8a97a5;fontFamily=Segoe UI;" vertex="1" parent="1">
          <mxGeometry x="40" y="870" width="1610" height="20" as="geometry" />
        </mxCell>
        <mxCell id="foot-rule" value="" style="line;strokeWidth=1;html=1;strokeColor=#e3e9ef;" vertex="1" parent="1">
          <mxGeometry x="40" y="890" width="1610" height="10" as="geometry" />
        </mxCell>
        <mxCell id="foot" value="v 1.0   ·   owner Platform Architecture   ·   date 2026-10" style="text;html=1;strokeColor=none;fillColor=none;align=left;verticalAlign=middle;whiteSpace=wrap;fontSize=9;fontColor=#9aa7b4;fontFamily=Segoe UI;" vertex="1" parent="1">
          <mxGeometry x="40" y="910" width="1610" height="10" as="geometry" />
        </mxCell>
      </root>
    </mxGraphModel>
  </diagram>
</mxfile>
