fix: prevent duplicate PUBLISH log entries from completion event

PublishService emits publish$ twice: once at start, once on completion.
The eager publishIdToEntryId cleanup in handleStatusUpdate fired before
the completion emission, causing handlePublishEvent to create a second
entry. Removed eager cleanup — overflow eviction is sufficient.

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

src/services/event-log.ts

@@ -415,16 +415,6 @@ class EventLogService {
       status: newStatus,
     };
 
-    // Clean up publish ID mapping when publish reaches terminal state
-    if (newStatus !== "pending") {
-      const allTerminal = Array.from(newRelayStatus.values()).every(
-        (r) => r.status === "success" || r.status === "error",
-      );
-      if (allTerminal) {
-        this.publishIdToEntryId.delete(update.publishId);
-      }
-    }
-
     // Notify subscribers
     this.entriesSubject.next([...this.entries]);
   }