fix: closed entries no longer show in deadline dashboard

- groupDeadlinesByEntry skips entries with status "inchis"
- closeEntry auto-resolves all pending deadlines on close (main + linked)
- Fixes S-2026-00001 showing as overdue despite being closed

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

src/modules/registratura/services/deadline-service.ts

@@ -246,6 +246,9 @@ export function groupDeadlinesByEntry(
   const groups: DeadlineEntryGroup[] = [];
 
   for (const entry of entries) {
+    // Skip closed entries — their deadlines are no longer actionable
+    if (entry.status === "inchis") continue;
+
     const deadlines = entry.trackedDeadlines ?? [];
     if (deadlines.length === 0) continue;