Add per-server notes field and show hardware info on dashboard

app/static/style.css

@@ -288,6 +288,36 @@ main {
     text-align: right;
 }
 
+/* --- Notes --- */
+
+.notes-section {
+    margin-bottom: 12px;
+}
+
+.notes-input {
+    width: 100%;
+    min-height: 32px;
+    background: #0f172a;
+    border: 1px solid #1e3a5f;
+    border-radius: 6px;
+    color: #cbd5e1;
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
+    font-size: 0.8rem;
+    padding: 8px 10px;
+    resize: none;
+    overflow: hidden;
+    line-height: 1.4;
+}
+
+.notes-input:focus {
+    outline: none;
+    border-color: #3b82f6;
+}
+
+.notes-input::placeholder {
+    color: #475569;
+}
+
 /* --- Container / VM Sub-cards --- */
 
 .container-grid {