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-table.tsx

@@ -40,7 +40,7 @@ interface RegistryTableProps {
   onView: (entry: RegistryEntry) => void;
   onEdit: (entry: RegistryEntry) => void;
   onDelete: (id: string) => void;
-  onClose: (id: string) => void;
+  onClose: (entry: RegistryEntry) => void;
   /** Create a new entry linked as reply (conex) to this entry */
   onReply?: (entry: RegistryEntry) => void;
 }
@@ -495,7 +495,7 @@ export function RegistryTable({
                           className="h-7 w-7 text-green-600"
                           onClick={(e) => {
                             e.stopPropagation();
-                            onClose(entry.id);
+                            onClose(entry);
                           }}
                           title="Inchide"
                         >