test(examples): re-record catalog stitch sentence in agent-spine inline snapshot

packages/examples/agent-spine-demo/tests/agent-core.spec.ts

@@ -527,6 +527,7 @@ describe('dsh-agent-spine-demo bundle', () => {
         </available_skills>
 
         If the user names a skill, or the task clearly matches a skill's description, call the \`skill\` tool with the exact skill name before taking task actions. Load all applicable skills, then follow their full instructions. This catalog contains summaries only; do not infer or follow a skill's instructions until it has been loaded.
+        A user may also invoke a skill directly; its <skill_content> block then appears in this conversation. Follow it, and do not call the \`skill\` tool again for that skill.
         </system-reminder>",
             "type": "user/message",
           },