fix: show correct hint when spawn delete filter matches nothing (#2456)

The 'create a spawn first' message was shown even when active servers
existed but none matched the filter. Now shows 'Run spawn delete without
filters to see all servers.' for the unmatched-filter case and reserves
the create hint for when no servers exist at all.

Fixes #2454

Agent: code-health

Co-authored-by: B <6723574+louisgv@users.noreply.github.com>
Co-authored-by: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: 3 people

packages/cli/src/commands/delete.ts

@@ -231,8 +231,10 @@ export async function cmdDelete(agentFilter?: string, cloudFilter?: string): Pro
           `${servers.length} active server${servers.length !== 1 ? "s" : ""} found, but none matched your filters.`,
         ),
       );
+      p.log.info(`Run ${pc.cyan("spawn delete")} without filters to see all servers.`);
+    } else {
+      p.log.info(`Run ${pc.cyan("spawn <agent> <cloud>")} to create a spawn first.`);
     }
-    p.log.info(`Run ${pc.cyan("spawn <agent> <cloud>")} to create a spawn first.`);
     return;
   }