Use AgentBay and $brainstorming in this isolated synthetic example. Read .agents/skills/agentbay-skill-installer/SKILL.md and the named provider’s installed SKILL.md and relevant resources before work. For a large skill file, read it in bounded consecutive sections so the instructions are not lost to output truncation. The exact provider source is supplied in source-map.json; this is selected-upstream verification, not a catalogue search. All listed sources were fetched at the recorded commit and Git blob checked. Verify the installed hash against the map. Read brief.md and constitution.md. The fixture fixes scope and waives further discovery questions; never claim a real user interview or human approval. Use only this named provider skill plus AgentBay; do not auto-invoke follow-on skills. Do not delegate, access accounts, install extra dependencies, edit installed skills or checks, run downloaded companion scripts, commit or deploy. Preserve each prior stage’s files.

Apply brainstorming to the first-run task-app brief. Compare two concrete onboarding approaches, recommend immediate first-task creation, and explain what is excluded. Write docs/brief.md (400 words maximum) and docs/brief.json with nonempty problem, firstSuccess, chosenApproach strings; alternatives list of at least two strings; constraints list; requirements list containing FR-001 through FR-008; and openQuestions list of questions a real product owner would answer. Mark the fixed-scope decision as the demo author's choice, not fabricated user approval. Write these two files only. Do not create a plan or implement anything.