fix: warn when /sessions falls back to live-only list (v0.3.3)

Phone showed 2 sessions because apiProxy catalog failed (pre-0.3.2 inject bug) and live-agent fallback hid cold Web sessions. Surface that mode explicitly.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/catalog.js

@@ -58,7 +58,7 @@ export async function loadCatalog(ctx) {
         path: w.path,
         sessionIds: (w.sessionIds ?? []).map(String),
     }));
-    return { workspaces, sessionsById, archivedIds };
+    return { workspaces, sessionsById, archivedIds, complete: true };
 }
 /** Sessions visible under one workspace (Web-like filters). */
 export function visibleSessionsForWorkspace(catalog, workspace) {
@@ -116,5 +116,5 @@ export function catalogFromLiveAgents(agents, ctx) {
         path,
         sessionIds: bucket.sessionIds,
     }));
-    return { workspaces, sessionsById, archivedIds: new Set() };
+    return { workspaces, sessionsById, archivedIds: new Set(), complete: false };
 }