Add MightHub DOA system card

Add Duty Officer Avatar system card with operational boundary, current mode, limitations and future integration path.

app.py

@@ -552,6 +552,77 @@ with gr.Blocks(
 
     gr.HTML(
         """
+        <div id="humai-hero" style="margin-top: 24px;">
+            <p style="letter-spacing: 0.28em; text-transform: uppercase; color: #a78bfa; font-weight: 800;">
+                MightHub DOA System Card
+            </p>
+
+            <h2 style="font-size: 32px; line-height: 1.12; margin-bottom: 16px;">
+                Duty Officer Avatar — Operational Boundary
+            </h2>
+
+            <p>
+                MightHub DOA is designed as a human-facing dispatcher layer.
+                It receives intent, reads the operational field, routes context
+                into Mission Control and returns explainable decision support.
+            </p>
+
+            <div style="display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-top: 22px;">
+                <div id="signal-card">
+                    <p style="letter-spacing:0.18em; text-transform:uppercase; color:#67e8f9; font-weight:800;">
+                        What it does
+                    </p>
+                    <ul style="color:#cbd5e1; line-height:1.8;">
+                        <li>Receives user intent</li>
+                        <li>Reads domain and scenario context</li>
+                        <li>Routes input into Mission Control</li>
+                        <li>Produces structured recommendations</li>
+                        <li>Explains next best action</li>
+                    </ul>
+                </div>
+
+                <div id="signal-card">
+                    <p style="letter-spacing:0.18em; text-transform:uppercase; color:#fbbf24; font-weight:800;">
+                        What it does not do
+                    </p>
+                    <ul style="color:#cbd5e1; line-height:1.8;">
+                        <li>Does not replace human judgment</li>
+                        <li>Does not act autonomously</li>
+                        <li>Does not issue public-authority decisions</li>
+                        <li>Does not perform certified compliance review</li>
+                        <li>Does not command real-world operations</li>
+                    </ul>
+                </div>
+
+                <div id="signal-card">
+                    <p style="letter-spacing:0.18em; text-transform:uppercase; color:#34d399; font-weight:800;">
+                        Current mode
+                    </p>
+                    <ul style="color:#cbd5e1; line-height:1.8;">
+                        <li>Deterministic enterprise fallback</li>
+                        <li>Demo-safe behavior</li>
+                        <li>Structured JSON output</li>
+                        <li>Human review required</li>
+                        <li>Public demonstrator boundary</li>
+                    </ul>
+                </div>
+
+                <div id="signal-card">
+                    <p style="letter-spacing:0.18em; text-transform:uppercase; color:#c084fc; font-weight:800;">
+                        Future integrations
+                    </p>
+                    <ul style="color:#cbd5e1; line-height:1.8;">
+                        <li>Gemini / Vertex AI reasoning</li>
+                        <li>Firebase session memory</li>
+                        <li>Google Maps mobility context</li>
+                        <li>Azure AI Foundry evaluation</li>
+                        <li>PitchAvatar or custom avatar layer</li>
+                    </ul>
+                </div>
+            </div>
+        </div>
+        """
+    )
         <div id="footer-note">
             <p><strong>Public demonstrator note:</strong> This Hugging Face Space currently runs as a deterministic enterprise MightHub DOA laboratory. It is designed for demo safety, explainability and future integration with Gemini / Vertex AI, Firebase, Google Maps, Azure AI Foundry, Hugging Face model artifacts, NVIDIA-oriented inference infrastructure and PitchAvatar or custom avatar layers.</p>
             <p><strong>Product boundary:</strong> HumAI is advisory, human-in-the-loop and demonstration-oriented in this version. It does not replace human judgment, public authority, legal review or operational command.</p>