chore: Various improvements and CI setup

- Add Jenkinsfile for CI/CD pipeline
- Fix keyboard shortcut '?' handling for help dialog
- Update note form and connections components
- Add work mode toggle improvements
- Update navigation history and usage tracking
- Improve validators
- Add session summaries

src/components/work-mode-toggle.tsx

@@ -9,13 +9,22 @@ export function WorkModeToggle() {
 
   useEffect(() => {
     setEnabled(getWorkMode())
+
+    const handlePreferencesChange = () => {
+      // Re-read work mode state when preferences change
+      setEnabled(getWorkMode())
+    }
+
+    window.addEventListener('preferences-updated', handlePreferencesChange)
+    return () => window.removeEventListener('preferences-updated', handlePreferencesChange)
   }, [])
 
   const toggle = () => {
     const newValue = !enabled
     setEnabled(newValue)
     setWorkMode(newValue)
-    // Could dispatch custom event for other components to listen
+    // Dispatch event so other components know work mode changed
+    window.dispatchEvent(new CustomEvent('work-mode-changed', { detail: { enabled: newValue } }))
   }
 
   return (