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/note-connections.tsx

@@ -98,6 +98,16 @@ function ConnectionGroup({
   )
 }
 
+// Deduplicate notes by id, keeping first occurrence
+function deduplicateById<T extends { id: string }>(items: T[]): T[] {
+  const seen = new Set<string>()
+  return items.filter(item => {
+    if (seen.has(item.id)) return false
+    seen.add(item.id)
+    return true
+  })
+}
+
 export function NoteConnections({
   noteId,
   backlinks,
@@ -123,6 +133,13 @@ export function NoteConnections({
   const hasAnyConnections =
     backlinks.length > 0 || outgoingLinks.length > 0 || relatedNotes.length > 0 || coUsedNotes.length > 0
 
+  // Deduplicate all lists to prevent React key warnings
+  const uniqueBacklinks = deduplicateById(backlinks.map((bl) => ({ id: bl.sourceNote.id, title: bl.sourceNote.title, type: bl.sourceNote.type })))
+  const uniqueOutgoing = deduplicateById(outgoingLinks.map((ol) => ({ id: ol.sourceNote.id, title: ol.sourceNote.title, type: ol.sourceNote.type })))
+  const uniqueRelated = deduplicateById(relatedNotes.map((rn) => ({ id: rn.id, title: rn.title, type: rn.type })))
+  const uniqueCoUsed = deduplicateById(coUsedNotes.map((cu) => ({ id: cu.noteId, title: cu.title, type: cu.type })))
+  const uniqueHistory = deduplicateById(navigationHistory.slice(0, 5).map((entry) => ({ id: entry.noteId, title: entry.title, type: entry.type })))
+
   const toggleCollapsed = (key: string) => {
     setCollapsed((prev) => ({ ...prev, [key]: !prev[key] }))
   }
@@ -144,11 +161,7 @@ export function NoteConnections({
         <ConnectionGroup
           title="Enlaces entrantes"
           icon={ExternalLink}
-          notes={backlinks.map((bl) => ({
-            id: bl.sourceNote.id,
-            title: bl.sourceNote.title,
-            type: bl.sourceNote.type,
-          }))}
+          notes={uniqueBacklinks}
           emptyMessage="Ningún otro documento enlaza a esta nota"
           isCollapsed={collapsed['backlinks']}
           onToggle={() => toggleCollapsed('backlinks')}
@@ -158,11 +171,7 @@ export function NoteConnections({
         <ConnectionGroup
           title="Enlaces salientes"
           icon={ArrowRight}
-          notes={outgoingLinks.map((ol) => ({
-            id: ol.sourceNote.id,
-            title: ol.sourceNote.title,
-            type: ol.sourceNote.type,
-          }))}
+          notes={uniqueOutgoing}
           emptyMessage="Esta nota no enlaza a ningún otro documento"
           isCollapsed={collapsed['outgoing']}
           onToggle={() => toggleCollapsed('outgoing')}
@@ -172,11 +181,7 @@ export function NoteConnections({
         <ConnectionGroup
           title="Relacionadas"
           icon={RefreshCw}
-          notes={relatedNotes.map((rn) => ({
-            id: rn.id,
-            title: rn.title,
-            type: rn.type,
-          }))}
+          notes={uniqueRelated}
           emptyMessage="No hay notas relacionadas"
           isCollapsed={collapsed['related']}
           onToggle={() => toggleCollapsed('related')}
@@ -186,11 +191,7 @@ export function NoteConnections({
         <ConnectionGroup
           title="Co-usadas"
           icon={Users}
-          notes={coUsedNotes.map((cu) => ({
-            id: cu.noteId,
-            title: cu.title,
-            type: cu.type,
-          }))}
+          notes={uniqueCoUsed}
           emptyMessage="No hay notas co-usadas"
           isCollapsed={collapsed['coused']}
           onToggle={() => toggleCollapsed('coused')}
@@ -214,15 +215,11 @@ export function NoteConnections({
         )}
 
         {/* Navigation history */}
-        {navigationHistory.length > 0 && (
+        {uniqueHistory.length > 0 && (
           <ConnectionGroup
             title="Vista recientemente"
             icon={Clock}
-            notes={navigationHistory.slice(0, 5).map((entry) => ({
-              id: entry.noteId,
-              title: entry.title,
-              type: entry.type,
-            }))}
+            notes={uniqueHistory}
             emptyMessage="No hay historial de navegación"
             isCollapsed={collapsed['history']}
             onToggle={() => toggleCollapsed('history')}

src/components/note-form.tsx

@@ -816,7 +816,8 @@ export function NoteForm({ initialData, isEdit = false }: NoteFormProps) {
     e.preventDefault()
     setIsSubmitting(true)
 
-    const noteData = {
+    // Build payload, explicitly excluding id and any undefined values
+    const noteData: Record<string, unknown> = {
       title,
       content,
       type,
@@ -825,6 +826,13 @@ export function NoteForm({ initialData, isEdit = false }: NoteFormProps) {
       tags,
     }
 
+    // Remove undefined values before sending
+    Object.keys(noteData).forEach(key => {
+      if (noteData[key] === undefined) {
+        delete noteData[key]
+      }
+    })
+
     try {
       const url = isEdit && initialData ? `/api/notes/${initialData.id}` : '/api/notes'
       const method = isEdit ? 'PUT' : 'POST'

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 (