feat(registratura): fix thread clear, close via conex entry

- Fix threadParentId clear: always show "Sterge" button even when parent not found in allEntries
- Bigger clear button with text label instead of tiny X icon
- Fallback display when parent not in current list (shows truncated ID)
- Close via conex: table/detail "Inchide" now creates a new reply entry that closes the original
- Header shows "Conex la BTG-XXX" + "Inchide originala" badge when closing via conex
- After saving the new conex entry, parent is auto-closed with resolution "finalizat"
- onClose signature changed from (id: string) to (entry: RegistryEntry) across table + detail

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/modules/registratura/components/registry-entry-detail.tsx

@@ -48,7 +48,7 @@ interface RegistryEntryDetailProps {
   open: boolean;
   onOpenChange: (open: boolean) => void;
   onEdit: (entry: RegistryEntry) => void;
-  onClose: (id: string) => void;
+  onClose: (entry: RegistryEntry) => void;
   onDelete: (id: string) => void;
   /** Create a new entry linked as reply (conex) to this entry */
   onReply?: (entry: RegistryEntry) => void;
@@ -224,7 +224,7 @@ export function RegistryEntryDetail({
                 className="text-green-600 border-green-300 hover:bg-green-50 dark:border-green-700 dark:hover:bg-green-950/30"
                 onClick={() => {
                   onOpenChange(false);
-                  onClose(entry.id);
+                  onClose(entry);
                 }}
               >
                 <CheckCircle2 className="mr-1.5 h-3.5 w-3.5" /> Inchide