fix: improve Dashboard error handling and add debug logging

- Add .catch() handler to load() Promise to prevent infinite loading state
- Add console.log statements for component lifecycle debugging
- Make EmailVerificationBanner/TrialBanner conditional on activeProfile
- Ensure greeting header always renders with fallback

This should fix the empty dashboard issue for new users.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

frontend/src/pages/Dashboard.jsx

@@ -247,6 +247,12 @@ export default function Dashboard() {
     setNutrition(n); setActivities(a)
     setInsights(Array.isArray(ins)?ins:[])
     setLoading(false)
+  }).catch(err => {
+    console.error('Dashboard load failed:', err)
+    // Set empty data on error so UI can still render
+    setStats(null); setWeights([]); setCalipers([]); setCircs([])
+    setNutrition([]); setActivities([]); setInsights([])
+    setLoading(false)
   })
 
   const runPipeline = async () => {
@@ -260,7 +266,12 @@ export default function Dashboard() {
     } finally { setPipelineLoading(false) }
   }
 
-  useEffect(()=>{ load() },[])
+  useEffect(()=>{
+    console.log('[Dashboard] Component mounted, loading data...')
+    load()
+  },[])
+
+  console.log('[Dashboard] Rendering, loading=', loading, 'activeProfile=', activeProfile?.name)
 
   if (loading) return <div className="empty-state"><div className="spinner"/></div>
 
@@ -304,6 +315,8 @@ export default function Dashboard() {
 
   const hasAnyData = latestW||latestCal||nutrition.length>0
 
+  console.log('[Dashboard] hasAnyData=', hasAnyData, 'latestW=', !!latestW, 'latestCal=', !!latestCal, 'nutrition.length=', nutrition.length)
+
   return (
     <div>
       {/* Header greeting */}
@@ -318,10 +331,10 @@ export default function Dashboard() {
       </div>
 
       {/* Email Verification Banner */}
-      <EmailVerificationBanner profile={activeProfile}/>
+      {activeProfile && <EmailVerificationBanner profile={activeProfile}/>}
 
       {/* Trial Banner */}
-      <TrialBanner profile={activeProfile}/>
+      {activeProfile && <TrialBanner profile={activeProfile}/>}
 
       {!hasAnyData && (
         <div className="empty-state">