diff --git a/f30c75f8-b3d5-4976-b6e1-a9b4e7d65829/draft_overlay.json b/f30c75f8-b3d5-4976-b6e1-a9b4e7d65829/draft_overlay.json
index 3a99888..d969ac4 100644
--- a/f30c75f8-b3d5-4976-b6e1-a9b4e7d65829/draft_overlay.json
+++ b/f30c75f8-b3d5-4976-b6e1-a9b4e7d65829/draft_overlay.json
@@ -1,4 +1,5 @@
 {
     "title": "Broker MQTT",
-    "_updated_at": "2026-05-16 19:46:22"
+    "_updated_at": "2026-05-16 19:46:44",
+    "slug": "broker"
 }
diff --git a/f30c75f8-b3d5-4976-b6e1-a9b4e7d65829/files/8f9f9882953cce6a-30083.svg b/f30c75f8-b3d5-4976-b6e1-a9b4e7d65829/files/8f9f9882953cce6a-30083.svg
new file mode 100644
index 0000000..bfa9e28
--- /dev/null
+++ b/f30c75f8-b3d5-4976-b6e1-a9b4e7d65829/files/8f9f9882953cce6a-30083.svg
@@ -0,0 +1,100 @@
+<svg width="100%" viewBox="0 0 680 560" role="img" xmlns="http://www.w3.org/2000/svg" style="">
+<title style="fill:rgb(0, 0, 0);stroke:none;color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:16px;font-weight:400;text-anchor:start;dominant-baseline:auto">Architecture MQTT avec Home Assistant, Zigbee2MQTT et ntfy</title>
+<desc style="fill:rgb(0, 0, 0);stroke:none;color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:16px;font-weight:400;text-anchor:start;dominant-baseline:auto">Un capteur IoT publie vers un broker Mosquitto qui échange des messages avec Home Assistant, Zigbee2MQTT et ntfy.</desc>
+<defs>
+<marker id="arrow-pub" viewBox="0 0 10 10" refX="8" refY="5" markerWidth="6" markerHeight="6" orient="auto-start-reverse"><path d="M2 1L8 5L2 9" fill="none" stroke="#185FA5" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/></marker>
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+
+<!-- ===== Publisher (left) — capteur IoT ===== -->
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+<text x="100" y="372" text-anchor="middle" style="fill:rgb(61, 61, 58);stroke:none;color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:12px;font-weight:400;text-anchor:middle;dominant-baseline:auto">Capteur (publisher)</text>
+
+<!-- ===== Broker (center) ===== -->
+<g transform="translate(290,240)" style="fill:rgb(0, 0, 0);stroke:none;color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:16px;font-weight:400;text-anchor:start;dominant-baseline:auto">
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+<text x="340" y="372" text-anchor="middle" style="fill:rgb(61, 61, 58);stroke:none;color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:12px;font-weight:400;text-anchor:middle;dominant-baseline:auto">Mosquitto</text>
+
+<!-- ===== Publish capteur -> broker ===== -->
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+
+<!-- ===== Subscriber 1 : Home Assistant (top right) ===== -->
+<g transform="translate(560,55)" style="fill:rgb(0, 0, 0);stroke:none;color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:16px;font-weight:400;text-anchor:start;dominant-baseline:auto">
+<!-- Maison bleue HA -->
+<path d="M 30 4 L 4 26 L 4 60 L 56 60 L 56 26 Z" fill="#18BCF2" stroke="#18BCF2" stroke-width="1" style="fill:rgb(24, 188, 242);stroke:rgb(24, 188, 242);color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:16px;font-weight:400;text-anchor:start;dominant-baseline:auto"/>
+<!-- Boucle "infinity" blanche stylisée -->
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+<text x="480" y="210" text-anchor="middle" fill="#185FA5" transform="rotate(-42 480 210)" style="fill:rgb(61, 61, 58);stroke:none;color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:12px;font-weight:400;text-anchor:middle;dominant-baseline:auto">Publish</text>
+
+<!-- ===== Subscriber 2 : Zigbee2MQTT (middle right) ===== -->
+<g transform="translate(560,255)" style="fill:rgb(0, 0, 0);stroke:none;color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:16px;font-weight:400;text-anchor:start;dominant-baseline:auto">
+<!-- Hexagone Zigbee orange -->
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+<text x="590" y="355" text-anchor="middle" style="fill:rgb(61, 61, 58);stroke:none;color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:12px;font-weight:400;text-anchor:middle;dominant-baseline:auto">Zigbee2MQTT</text>
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+<text x="475" y="270" text-anchor="middle" fill="#0F6E56" style="fill:rgb(61, 61, 58);stroke:none;color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:12px;font-weight:400;text-anchor:middle;dominant-baseline:auto">Subscribe</text>
+<text x="475" y="306" text-anchor="middle" fill="#185FA5" style="fill:rgb(61, 61, 58);stroke:none;color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:12px;font-weight:400;text-anchor:middle;dominant-baseline:auto">Publish</text>
+
+<!-- ===== Subscriber 3 : ntfy (bottom right) ===== -->
+<g transform="translate(560,440)" style="fill:rgb(0, 0, 0);stroke:none;color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:16px;font-weight:400;text-anchor:start;dominant-baseline:auto">
+<!-- Cloche ntfy violette -->
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+<!-- petite antenne -->
+<circle cx="30" cy="6" r="2.5" fill="#7F77DD" style="fill:rgb(127, 119, 221);stroke:none;color:rgb(0, 0, 0);stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;opacity:1;font-family:&quot;Anthropic Sans&quot;, -apple-system, BlinkMacSystemFont, &quot;Segoe UI&quot;, sans-serif;font-size:16px;font-weight:400;text-anchor:start;dominant-baseline:auto"/>
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\ No newline at end of file