Fix command palette: agent ID propagation, result selection, and scope tabs

- Propagate authenticated agent identity through write buffers via
  TaggedExecution/TaggedDiagram wrappers so ClickHouse rows get real
  agent IDs instead of empty strings
- Add execution_id to text search LIKE clause so selecting an execution
  by ID in the palette actually finds it
- Clear status filter to all three statuses on palette selection so the
  chosen execution/agent isn't filtered out
- Add disabled Routes and Exchanges scope tabs with "coming soon" state

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

cameleer3-server-app/src/main/java/com/cameleer3/server/app/search/ClickHouseSearchEngine.java

@@ -123,13 +123,18 @@ public class ClickHouseSearchEngine implements SearchEngine {
         }
         if (req.text() != null && !req.text().isBlank()) {
             String pattern = "%" + escapeLike(req.text()) + "%";
-            conditions.add("(route_id LIKE ? OR agent_id LIKE ? OR error_message LIKE ? OR error_stacktrace LIKE ? OR exchange_bodies LIKE ? OR exchange_headers LIKE ?)");
-            params.add(pattern);
-            params.add(pattern);
-            params.add(pattern);
-            params.add(pattern);
-            params.add(pattern);
-            params.add(pattern);
+            String[] textColumns = {
+                    "execution_id", "route_id", "agent_id",
+                    "error_message", "error_stacktrace",
+                    "exchange_bodies", "exchange_headers"
+            };
+            var likeClauses = java.util.Arrays.stream(textColumns)
+                    .map(col -> col + " LIKE ?")
+                    .toList();
+            conditions.add("(" + String.join(" OR ", likeClauses) + ")");
+            for (int i = 0; i < textColumns.length; i++) {
+                params.add(pattern);
+            }
         }
         if (req.textInBody() != null && !req.textInBody().isBlank()) {
             conditions.add("exchange_bodies LIKE ?");