fix(dashboards): let the chat composer grow past 140px before scrolling

140px cut off a realistic multi-line queued message (e.g. typed while a
build is in progress) behind an internal scrollbar well before it filled
the sidebar. Raised the cap to 280px so it keeps growing with the content
instead.

Author: notSumit25

src/components/sections/DashboardWorkspace.jsx

@@ -218,7 +218,7 @@ export default function DashboardWorkspace({ connectionId, dashboard, onClose })
     const el = inputRef.current
     if (!el) return
     el.style.height = 'auto'
-    el.style.height = `${Math.min(el.scrollHeight, 140)}px`
+    el.style.height = `${Math.min(el.scrollHeight, 280)}px`
   }, [input])
 
   // Elapsed-time ticker so a 15-30s build reads as alive, not stuck. Reads the

src/components/sections/DashboardWorkspace.module.css

@@ -556,7 +556,7 @@
   flex: 1;
   min-width: 0;
   min-height: 38px;
-  max-height: 140px;
+  max-height: 280px;
   padding: 9px 12px;
   border: 1px solid #e2e2e2;
   border-radius: 10px;