fix: Restore Brain Monitor HTML dashboard and API stats route

server/src/dashboard.html

@@ -0,0 +1,73 @@
+<!DOCTYPE html>
+<html>
+<head>
+    <title>Brain Monitor</title>
+    <style>
+        body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; padding: 40px; background-color: #f0f2f5; color: #333; }
+        h1 { color: #2c3e50; text-align: center; margin-bottom: 30px; }
+        .grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 20px; max-width: 800px; margin: 0 auto; }
+        .stat-card { background: white; padding: 20px; border-radius: 8px; box-shadow: 0 4px 6px rgba(0,0,0,0.05); text-align: center; transition: transform 0.2s ease; }
+        .stat-card:hover { transform: translateY(-5px); }
+        .stat-value { font-size: 2.5em; font-weight: bold; color: #3498db; margin: 10px 0; }
+        .stat-label { font-size: 1.1em; color: #7f8c8d; text-transform: uppercase; letter-spacing: 1px; }
+        .status-dot { display: inline-block; width: 10px; height: 10px; background-color: #2ecc71; border-radius: 50%; margin-right: 8px; box-shadow: 0 0 5px #2ecc71; }
+        .header-bar { max-width: 800px; margin: 0 auto 20px; display: flex; justify-content: space-between; align-items: center; }
+    </style>
+</head>
+<body>
+    <div class="header-bar">
+        <h1>🧠 Antigravity Brain Monitor</h1>
+        <div><span class="status-dot"></span>System Online</div>
+    </div>
+    
+    <div class="grid">
+        <div class="stat-card">
+            <div class="stat-label">Entities</div>
+            <div class="stat-value" id="val-entities">-</div>
+        </div>
+        <div class="stat-card">
+            <div class="stat-label">Relations</div>
+            <div class="stat-value" id="val-relations">-</div>
+        </div>
+        <div class="stat-card">
+            <div class="stat-label">Active Tasks</div>
+            <div class="stat-value" id="val-tasks">-</div>
+        </div>
+        <div class="stat-card">
+            <div class="stat-label">Snippets</div>
+            <div class="stat-value" id="val-snippets">-</div>
+        </div>
+        <div class="stat-card">
+            <div class="stat-label">Tech Debt</div>
+            <div class="stat-value" id="val-tech_debts">-</div>
+        </div>
+        <div class="stat-card">
+            <div class="stat-label">ADRs</div>
+            <div class="stat-value" id="val-adrs">-</div>
+        </div>
+    </div>
+
+    <script>
+        async function fetchStats() {
+            try {
+                const response = await fetch('/api/stats');
+                const data = await response.json();
+                
+                document.getElementById('val-entities').innerText = data.entities;
+                document.getElementById('val-relations').innerText = data.relations;
+                document.getElementById('val-tasks').innerText = data.tasks;
+                document.getElementById('val-snippets').innerText = data.snippets;
+                document.getElementById('val-tech_debts').innerText = data.tech_debts;
+                document.getElementById('val-adrs').innerText = data.adrs;
+            } catch (err) {
+                console.error("Failed to fetch stats:", err);
+            }
+        }
+        
+        // Initial fetch
+        fetchStats();
+        // Poll every 2 seconds
+        setInterval(fetchStats, 2000);
+    </script>
+</body>
+</html>

server/src/main.rs

@@ -139,6 +139,32 @@ fn run_server(state: Arc<MemoryState>) -> Result<(), Box<dyn std::error::Error>>
         let app = Router::new()
             .route("/sse", get(sse_handler))
             .route("/messages", post(message_handler))
+            .route("/health", get(health_handler))
+            .route("/dashboard", get(|| async move {
+                axum::response::Html(include_str!("dashboard.html"))
+            }))
+            .route("/api/stats", get({
+                let state_clone = app_state.handler.state.clone();
+                move || async move {
+                    let (entities, relations) = {
+                        let graph = state_clone.get_full_graph();
+                        (graph.entities.len(), graph.relations.len())
+                    };
+                    let tasks = state_clone.tasks.read().len();
+                    let snippets = state_clone.snippets.read().len();
+                    let tech_debts = state_clone.tech_debts.read().len();
+                    let adrs = state_clone.adrs.read().len();
+
+                    axum::Json(serde_json::json!({
+                        "entities": entities,
+                        "relations": relations,
+                        "tasks": tasks,
+                        "snippets": snippets,
+                        "tech_debts": tech_debts,
+                        "adrs": adrs
+                    }))
+                }
+            }))
             .with_state(app_state);
 
         let listener = tokio::net::TcpListener::bind("0.0.0.0:3000").await.unwrap();
@@ -162,6 +188,10 @@ async fn sse_handler(
     Sse::new(stream).keep_alive(axum::response::sse::KeepAlive::new())
 }
 
+async fn health_handler() -> &'static str {
+    "OK"
+}
+
 #[derive(serde::Deserialize)]
 struct SessionQuery {
     #[serde(rename = "sessionId")]