fix(api): sort graph nodes by degree instead of alphabetically

The unrooted graph endpoint caps at 500 entities with ORDER BY e.slug, which fills the cap with exec:* rows and excludes every host/lxc/service/vm entity. Since edges require both endpoints in the node set (ANY/ANY), 99.9% of edges were dropped — 500 nodes but only 1 edge survived.

Fix: select the 500 most-connected entities (by relationship count descending) so the topology is preserved. Result: 500 nodes, 900 edges across all relationship types.

VERSION

@@ -1 +1 @@
-0.5.3
+0.5.4

internal/httpapi/impl.go

@@ -304,10 +304,24 @@ func (s *Server) GetGraph(ctx context.Context, req gen.GetGraphRequestObject) (g
 			LEFT JOIN entity_status st ON st.entity_id = e.id
 			ORDER BY e.slug`, rootID, depth, req.Params.RelType)
 	} else {
+		// Whole-graph view: pick the most-connected entities first so the
+		// graph shows actual topology, not just whatever sorts first
+		// alphabetically.  Without this the cap fills with exec:* rows and
+		// drops every host/lxc/service/vm — and every edge those entities
+		// connect — because edges require both endpoints in the node set.
 		nodes, err = s.queryEntities(ctx, `
-			SELECT `+entityCols+` FROM entities e
+			SELECT `+entityCols+`
+			FROM entities e
 			LEFT JOIN entity_status st ON st.entity_id = e.id
-			ORDER BY e.slug LIMIT $1`,
+			WHERE e.id IN (
+				SELECT e2.id FROM entities e2
+				LEFT JOIN relationships r ON r.valid_to IS NULL
+					AND (r.source_id = e2.id OR r.target_id = e2.id)
+				GROUP BY e2.id
+				ORDER BY count(r.type) DESC, e2.slug
+				LIMIT $1
+			)
+			ORDER BY e.slug`,
 			graphNodeCap+1)
 		if err == nil && len(nodes) > graphNodeCap {
 			nodes = nodes[:graphNodeCap]