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.d.ts

@@ -19,6 +19,8 @@ export interface CatalogSnapshot {
     workspaces: WorkspaceRow[];
     sessionsById: Map<string, SessionRow>;
     archivedIds: Set<string>;
+    /** true when loaded from apiProxy (Web-aligned); false for live-agent fallback. */
+    complete: boolean;
 }
 /** Load workspaces + sessions aligned with Web UI (via apiProxy when available). */
 export declare function loadCatalog(ctx: Context): Promise<CatalogSnapshot | undefined>;