Dashboard: Session message counts, workspace path, Agent persona

wwwroot/css/base.css

@@ -19,6 +19,10 @@ body, input, select, button, textarea {
   color: var(--text);
 }
 
+input {
+  min-width: 0;
+}
+
 input, textarea, select {
   padding: var(--s2);
 }
@@ -55,6 +59,8 @@ button:disabled {
 }
 
 textarea {
-  height: 8em;
-  min-height: 8em;
+  height: 12em;
+  min-height: 12em;
+  max-height: 12em;
+  resize: none;
 }