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/hooks/use-global-shortcuts.ts

@@ -27,7 +27,7 @@ export function useGlobalShortcuts() {
       }
 
       // Handle ? for help
-      if (e.key === '?' && !e.shiftKey) {
+      if (e.key === '?' && e.shiftKey) {
         e.preventDefault()
         setShowHelp(true)
         return