diff --git a/src/modules/address-book/components/address-book-module.tsx b/src/modules/address-book/components/address-book-module.tsx
index 6b5f686..145c527 100644
--- a/src/modules/address-book/components/address-book-module.tsx
+++ b/src/modules/address-book/components/address-book-module.tsx
@@ -174,7 +174,7 @@ function ContactCard({ contact, onEdit, onDelete }: {
               <Globe className="h-3 w-3 shrink-0" /><span className="truncate">{contact.website}</span>
             </div>
           )}
-          {contact.contactPersons.length > 0 && (
+          {(contact.contactPersons ?? []).length > 0 && (
             <div className="mt-1 border-t pt-1">
               <p className="text-[10px] font-medium text-muted-foreground uppercase tracking-wider mb-1">
                 Persoane de contact ({contact.contactPersons.length})
diff --git a/src/modules/address-book/hooks/use-contacts.ts b/src/modules/address-book/hooks/use-contacts.ts
index d0601ee..6c2695e 100644
--- a/src/modules/address-book/hooks/use-contacts.ts
+++ b/src/modules/address-book/hooks/use-contacts.ts
@@ -76,8 +76,8 @@ export function useContacts() {
         c.company.toLowerCase().includes(q) ||
         c.email.toLowerCase().includes(q) ||
         c.phone.includes(q) ||
-        c.department.toLowerCase().includes(q) ||
-        c.role.toLowerCase().includes(q)
+        (c.department ?? '').toLowerCase().includes(q) ||
+        (c.role ?? '').toLowerCase().includes(q)
       );
     }
     return true;
diff --git a/src/modules/digital-signatures/components/digital-signatures-module.tsx b/src/modules/digital-signatures/components/digital-signatures-module.tsx
index fea5988..a1051c6 100644
--- a/src/modules/digital-signatures/components/digital-signatures-module.tsx
+++ b/src/modules/digital-signatures/components/digital-signatures-module.tsx
@@ -157,8 +157,8 @@ export function DigitalSignaturesModule() {
                         {asset.usageNotes && (
                           <p className="text-xs text-muted-foreground line-clamp-1">Note: {asset.usageNotes}</p>
                         )}
-                        {asset.versions.length > 0 && (
-                          <p className="text-xs text-muted-foreground">Versiuni: {asset.versions.length + 1}</p>
+                        {(asset.versions ?? []).length > 0 && (
+                          <p className="text-xs text-muted-foreground">Versiuni: {(asset.versions ?? []).length + 1}</p>
                         )}
                       </div>
                     </CardContent>
diff --git a/src/modules/digital-signatures/hooks/use-signatures.ts b/src/modules/digital-signatures/hooks/use-signatures.ts
index c4a32e7..5a721fb 100644
--- a/src/modules/digital-signatures/hooks/use-signatures.ts
+++ b/src/modules/digital-signatures/hooks/use-signatures.ts
@@ -60,7 +60,7 @@ export function useSignatures() {
     const existing = assets.find((a) => a.id === assetId);
     if (!existing) return;
     const version: AssetVersion = { id: uuid(), imageUrl, notes, createdAt: new Date().toISOString() };
-    const updatedVersions = [...existing.versions, version];
+    const updatedVersions = [...(existing.versions ?? []), version];
     await updateAsset(assetId, { imageUrl, versions: updatedVersions });
   }, [assets, updateAsset]);
 
diff --git a/src/modules/it-inventory/hooks/use-inventory.ts b/src/modules/it-inventory/hooks/use-inventory.ts
index a6bea65..50fce67 100644
--- a/src/modules/it-inventory/hooks/use-inventory.ts
+++ b/src/modules/it-inventory/hooks/use-inventory.ts
@@ -79,9 +79,9 @@ export function useInventory() {
         item.name.toLowerCase().includes(q) ||
         item.serialNumber.toLowerCase().includes(q) ||
         item.assignedTo.toLowerCase().includes(q) ||
-        item.ipAddress.toLowerCase().includes(q) ||
-        item.vendor.toLowerCase().includes(q) ||
-        item.model.toLowerCase().includes(q)
+        (item.ipAddress ?? '').toLowerCase().includes(q) ||
+        (item.vendor ?? '').toLowerCase().includes(q) ||
+        (item.model ?? '').toLowerCase().includes(q)
       );
     }
     return true;
diff --git a/src/modules/registratura/components/registratura-module.tsx b/src/modules/registratura/components/registratura-module.tsx
index 9a96bc6..bc19e61 100644
--- a/src/modules/registratura/components/registratura-module.tsx
+++ b/src/modules/registratura/components/registratura-module.tsx
@@ -50,7 +50,7 @@ export function RegistraturaModule() {
 
   const handleCloseRequest = (id: string) => {
     const entry = allEntries.find((e) => e.id === id);
-    if (entry && entry.linkedEntryIds.length > 0) {
+    if (entry && (entry.linkedEntryIds ?? []).length > 0) {
       setClosingId(id);
     } else {
       closeEntry(id, false);
@@ -158,7 +158,7 @@ export function RegistraturaModule() {
           </DialogHeader>
           <div className="py-2">
             <p className="text-sm">
-              Această înregistrare are {closingEntry?.linkedEntryIds.length ?? 0} înregistrări legate.
+              Această înregistrare are {closingEntry?.linkedEntryIds?.length ?? 0} înregistrări legate.
               Vrei să le închizi și pe acestea?
             </p>
           </div>
diff --git a/src/modules/registratura/components/registry-table.tsx b/src/modules/registratura/components/registry-table.tsx
index 3764390..7a84aae 100644
--- a/src/modules/registratura/components/registry-table.tsx
+++ b/src/modules/registratura/components/registry-table.tsx
@@ -69,7 +69,7 @@ export function RegistryTable({ entries, loading, onEdit, onDelete, onClose }: R
         </thead>
         <tbody>
           {entries.map((entry) => {
-            const overdueDays = entry.status === 'deschis' ? getOverdueDays(entry.deadline) : null;
+            const overdueDays = (entry.status === 'deschis' || !entry.status) ? getOverdueDays(entry.deadline) : null;
             const isOverdue = overdueDays !== null && overdueDays > 0;
             return (
               <tr
@@ -86,16 +86,16 @@ export function RegistryTable({ entries, loading, onEdit, onDelete, onClose }: R
                     variant={entry.direction === 'intrat' ? 'default' : 'secondary'}
                     className="text-xs"
                   >
-                    {DIRECTION_LABELS[entry.direction]}
+                    {DIRECTION_LABELS[entry.direction] ?? entry.direction ?? '—'}
                   </Badge>
                 </td>
-                <td className="px-3 py-2 text-xs">{DOC_TYPE_LABELS[entry.documentType]}</td>
+                <td className="px-3 py-2 text-xs">{DOC_TYPE_LABELS[entry.documentType] ?? entry.documentType ?? '—'}</td>
                 <td className="px-3 py-2 max-w-[200px] truncate">
                   {entry.subject}
-                  {entry.linkedEntryIds.length > 0 && (
+                  {(entry.linkedEntryIds ?? []).length > 0 && (
                     <Link2 className="ml-1 inline h-3 w-3 text-muted-foreground" />
                   )}
-                  {entry.attachments.length > 0 && (
+                  {(entry.attachments ?? []).length > 0 && (
                     <Badge variant="outline" className="ml-1 text-[10px] px-1">
                       {entry.attachments.length} fișiere
                     </Badge>
diff --git a/src/modules/registratura/hooks/use-registry.ts b/src/modules/registratura/hooks/use-registry.ts
index de11fdb..2380979 100644
--- a/src/modules/registratura/hooks/use-registry.ts
+++ b/src/modules/registratura/hooks/use-registry.ts
@@ -76,8 +76,9 @@ export function useRegistry() {
     const entry = entries.find((e) => e.id === id);
     if (!entry) return;
     await updateEntry(id, { status: 'inchis' });
-    if (closeLinked && entry.linkedEntryIds.length > 0) {
-      for (const linkedId of entry.linkedEntryIds) {
+    const linked = entry.linkedEntryIds ?? [];
+    if (closeLinked && linked.length > 0) {
+      for (const linkedId of linked) {
         const linked = entries.find((e) => e.id === linkedId);
         if (linked && linked.status !== 'inchis') {
           const updatedLinked: RegistryEntry = {
diff --git a/src/modules/word-templates/components/word-templates-module.tsx b/src/modules/word-templates/components/word-templates-module.tsx
index 8936c81..7426475 100644
--- a/src/modules/word-templates/components/word-templates-module.tsx
+++ b/src/modules/word-templates/components/word-templates-module.tsx
@@ -124,9 +124,9 @@ export function WordTemplatesModule() {
                           {tpl.clonedFrom && <Badge variant="secondary" className="text-[10px]">Clonă</Badge>}
                         </div>
                         {/* Placeholders display */}
-                        {tpl.placeholders.length > 0 && (
+                        {(tpl.placeholders ?? []).length > 0 && (
                           <div className="mt-1.5 flex flex-wrap gap-1">
-                            {tpl.placeholders.map((p) => (
+                            {(tpl.placeholders ?? []).map((p) => (
                               <span key={p} className="rounded bg-muted px-1 py-0.5 font-mono text-[10px] text-muted-foreground">{`{{${p}}}`}</span>
                             ))}
                           </div>
@@ -181,7 +181,7 @@ function TemplateForm({ initial, onSubmit, onCancel }: {
   const [fileUrl, setFileUrl] = useState(initial?.fileUrl ?? '');
   const [company, setCompany] = useState<CompanyId>(initial?.company ?? 'beletage');
   const [version, setVersion] = useState(initial?.version ?? '1.0.0');
-  const [placeholdersText, setPlaceholdersText] = useState(initial?.placeholders.join(', ') ?? '');
+  const [placeholdersText, setPlaceholdersText] = useState((initial?.placeholders ?? []).join(', '));
 
   return (
     <form onSubmit={(e) => {