fix: use node http for cron scheduler + add toast notifications

- Replace wget with node http.request in entrypoint (guaranteed
  available, better error handling)
- Add 30s polling in agents page to detect new agent executions
- Show toast notification when an agent finishes (success or failure)
- Add logging in scheduler for visibility in docker logs

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

memento-note/app/(main)/agents/agents-page-client.tsx

@@ -5,7 +5,7 @@
  * Main client component for the agents page.
  */
 
-import { useState, useCallback, useMemo } from 'react'
+import { useState, useCallback, useMemo, useEffect, useRef } from 'react'
 import { Plus, Bot, LifeBuoy, Search } from 'lucide-react'
 import { toast } from 'sonner'
 import { useLanguage } from '@/lib/i18n'
@@ -84,11 +84,49 @@ export function AgentsPageClient({
     try {
       const updated = await getAgents()
       setAgents(updated)
+      return updated
     } catch {
-      // Silent
+      return null
     }
   }, [])
 
+  // Track latest action per agent to detect new executions
+  const prevActionsRef = useRef<Record<string, string>>({})
+
+  // Poll every 30s to detect agent executions and show toast notifications
+  useEffect(() => {
+    // Initialize tracking from initial data
+    for (const agent of initialAgents) {
+      const lastAction = agent.actions[0]
+      if (lastAction) {
+        prevActionsRef.current[agent.id] = lastAction.id
+      }
+    }
+
+    const interval = setInterval(async () => {
+      const updated = await refreshAgents()
+      if (!updated) return
+
+      for (const agent of updated) {
+        const lastAction = agent.actions[0]
+        if (!lastAction) continue
+
+        const prevId = prevActionsRef.current[agent.id]
+        if (prevId && prevId !== lastAction.id) {
+          // New action detected
+          if (lastAction.status === 'success') {
+            toast.success(t('agents.toasts.autoRunSuccess', { name: agent.name }))
+          } else if (lastAction.status === 'failure') {
+            toast.error(t('agents.toasts.autoRunError', { name: agent.name }))
+          }
+        }
+        prevActionsRef.current[agent.id] = lastAction.id
+      }
+    }, 30000)
+
+    return () => clearInterval(interval)
+  }, [])
+
   const handleToggle = useCallback((id: string, isEnabled: boolean) => {
     setAgents(prev => prev.map(a => a.id === id ? { ...a, isEnabled } : a))
   }, [])