Search by NAS folder number, drop Indirizzo column, remove manual ratifica field

- Association list search now also matches nasFolderNumber.
- Dropped the "Indirizzo" column from the list table (still editable
  in the edit dialog, just not shown in the table).
- Removed the manual "Codice ratifica" field from the edit dialog -
  it's derived automatically now, so a manual override field was
  redundant and a source of stale/wrong values; the underlying field
  is untouched by this (existing values are preserved via the
  spread), just no longer directly editable here.
- Saving a NAS folder number that's already used by another
  association now warns (with the other association's name) before
  proceeding, since a collision silently produces two associations
  with the same ratification code.

Verified live: table has no Indirizzo column, searching "2" surfaces
"#2 ENCAP ODV", the ratification code field is gone from the edit
dialog, and setting folder 4 (already used by ENCAP - COMITATO
REGIONALE VENETO) triggers the duplicate warning.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017hQcuUQFue2bFvrYw2UQhK

app/dashboard/page.tsx

@@ -40,9 +40,13 @@ export default function DashboardPage() {
     const query_ = query.trim().toLowerCase();
     if (!query_) return associations;
     return associations.filter((association) =>
-      [association.name, association.address, association.vatNumber, association.runtsId].some(
-        (value) => value?.toLowerCase().includes(query_)
-      )
+      [
+        association.name,
+        association.address,
+        association.vatNumber,
+        association.runtsId,
+        association.nasFolderNumber?.toString(),
+      ].some((value) => value?.toLowerCase().includes(query_))
     );
   }, [associations, query]);
 

components/associations/association-table.tsx

@@ -30,7 +30,6 @@ export function AssociationTable({ associations }: { associations: Association[]
         <TableHeader>
           <TableRow>
             <TableHead>Nome</TableHead>
-            <TableHead className="hidden md:table-cell">Indirizzo</TableHead>
             <TableHead className="hidden lg:table-cell">P.IVA</TableHead>
             <TableHead className="hidden lg:table-cell">RUNTS</TableHead>
             <TableHead>Stato</TableHead>
@@ -50,9 +49,6 @@ export function AssociationTable({ associations }: { associations: Association[]
                 )}
                 {association.name}
               </TableCell>
-              <TableCell className="hidden max-w-64 truncate text-muted-foreground md:table-cell">
-                {association.address}
-              </TableCell>
               <TableCell className="hidden text-muted-foreground lg:table-cell">
                 {association.vatNumber || "—"}
               </TableCell>

components/associations/edit-association-dialog.tsx

@@ -14,7 +14,7 @@ import {
 import { Input } from "@/components/ui/input";
 import { Label } from "@/components/ui/label";
 import { Switch } from "@/components/ui/switch";
-import { updateAssociation } from "@/lib/api";
+import { getAssociations, updateAssociation } from "@/lib/api";
 import type { Association } from "@/lib/models";
 
 export function EditAssociationDialog({
@@ -30,7 +30,6 @@ export function EditAssociationDialog({
   const [address, setAddress] = useState(association.address);
   const [vatNumber, setVatNumber] = useState(association.vatNumber ?? "");
   const [runtsId, setRuntsId] = useState(association.runtsId ?? "");
-  const [ratificationCode, setRatificationCode] = useState(association.ratificationCode ?? "");
   const [nasFolderNumber, setNasFolderNumber] = useState(association.nasFolderNumber?.toString() ?? "");
   const [isShown, setIsShown] = useState(association.isShown ?? true);
 
@@ -40,7 +39,6 @@ export function EditAssociationDialog({
       setAddress(association.address);
       setVatNumber(association.vatNumber ?? "");
       setRuntsId(association.runtsId ?? "");
-      setRatificationCode(association.ratificationCode ?? "");
       setNasFolderNumber(association.nasFolderNumber?.toString() ?? "");
       setIsShown(association.isShown ?? true);
     }
@@ -50,13 +48,29 @@ export function EditAssociationDialog({
     e.preventDefault();
     setSaving(true);
     try {
+      if (nasFolderNumber.trim() !== "") {
+        const folderNumber = Number(nasFolderNumber);
+        const others = await getAssociations();
+        const duplicate = others.find(
+          (a) => a.id !== association.id && a.nasFolderNumber === folderNumber
+        );
+        if (duplicate) {
+          const proceed = confirm(
+            `Il numero cartella ${folderNumber} è già usato da "${duplicate.name}". Continuare comunque?`
+          );
+          if (!proceed) {
+            setSaving(false);
+            return;
+          }
+        }
+      }
+
       const updated = await updateAssociation(association.id!, {
         ...association,
         name,
         address,
         vatNumber,
         runtsId,
-        ratificationCode,
         nasFolderNumber: nasFolderNumber.trim() === "" ? undefined : Number(nasFolderNumber),
         isShown,
       });
@@ -104,16 +118,6 @@ export function EditAssociationDialog({
               <Input id="e-runtsId" value={runtsId} onChange={(e) => setRuntsId(e.target.value)} />
             </div>
 
-            <div className="space-y-2">
-              <Label htmlFor="e-ratificationCode">Codice ratifica (es. LO183)</Label>
-              <Input
-                id="e-ratificationCode"
-                value={ratificationCode}
-                onChange={(e) => setRatificationCode(e.target.value)}
-                placeholder="Usato nell'attestato di adesione"
-              />
-            </div>
-
             <div className="space-y-2">
               <Label htmlFor="e-nasFolderNumber">Numero cartella NAS</Label>
               <Input