feat: add structured deliverable output to persona workflow

[joy7758]

Summary

• convert each persona stage from plain strings to structured JSON fragments
• store structured persona outputs and a final deliverable in the shared task context
• keep previous stage references as compact snapshots to avoid nested output bloat

Validation

• ran Task: Market Research & Design Collaboration
  Starting Task:
  {
  "persona_name": "Design Persona",
  "role": "Designer",
  "skills": [
  "UI Design",
  "UX Research",
  "Prototyping",
  "Adobe XD",
  "Figma"
  ],
  "task_output": {
  "summary": "Designing with skills: UI Design, UX Research, Prototyping, Adobe XD, Figma",
  "focus": [
  "clarify the user journey",
  "reduce interface friction",
  "prepare a usable design brief"
  ]
  },
  "previous_results": []
  }
  {
  "persona_name": "Research Persona",
  "role": "Researcher",
  "skills": [
  "literature search",
  "information synthesis",
  "technical explanation"
  ],
  "task_output": {
  "summary": "Researching with skills: literature search, information synthesis, technical explanation",
  "focus": [
  "collect supporting market signals",
  "distill concise findings",
  "translate evidence into technical context"
  ]
  },
  "previous_results": [
  {
  "persona_name": "Design Persona",
  "role": "Designer",
  "task_output": {
  "summary": "Designing with skills: UI Design, UX Research, Prototyping, Adobe XD, Figma",
  "focus": [
  "clarify the user journey",
  "reduce interface friction",
  "prepare a usable design brief"
  ]
  }
  }
  ]
  }
  {
  "persona_name": "Marketing Persona",
  "role": "Marketing Manager",
  "skills": [
  "copywriting",
  "campaign design",
  "product positioning"
  ],
  "task_output": {
  "summary": "Marketing with skills: copywriting, campaign design, product positioning",
  "focus": [
  "turn research into positioning",
  "shape a campaign-ready narrative",
  "package the final deliverable"
  ]
  },
  "previous_results": [
  {
  "persona_name": "Design Persona",
  "role": "Designer",
  "task_output": {
  "summary": "Designing with skills: UI Design, UX Research, Prototyping, Adobe XD, Figma",
  "focus": [
  "clarify the user journey",
  "reduce interface friction",
  "prepare a usable design brief"
  ]
  }
  },
  {
  "persona_name": "Research Persona",
  "role": "Researcher",
  "task_output": {
  "summary": "Researching with skills: literature search, information synthesis, technical explanation",
  "focus": [
  "collect supporting market signals",
  "distill concise findings",
  "translate evidence into technical context"
  ]
  }
  }
  ]
  }

Task: Market Research & Design Collaboration
Progress:
Design Persona: Designing
Research Persona: Researching
Marketing Persona: Marketing
Results:
Design Persona: Designing with skills: UI Design, UX Research, Prototyping, Adobe XD, Figma
Research Persona: Researching with skills: literature search, information synthesis, technical explanation
Marketing Persona: Marketing with skills: copywriting, campaign design, product positioning

Final Deliverable:
{
"task_name": "Market Research & Design Collaboration",
"progress": {
"Design Persona": "Designing",
"Research Persona": "Researching",
"Marketing Persona": "Marketing"
},
"persona_outputs": {
"Design Persona": {
"persona_name": "Design Persona",
"role": "Designer",
"skills": [
"UI Design",
"UX Research",
"Prototyping",
"Adobe XD",
"Figma"
],
"task_output": {
"summary": "Designing with skills: UI Design, UX Research, Prototyping, Adobe XD, Figma",
"focus": [
"clarify the user journey",
"reduce interface friction",
"prepare a usable design brief"
]
},
"previous_results": []
},
"Research Persona": {
"persona_name": "Research Persona",
"role": "Researcher",
"skills": [
"literature search",
"information synthesis",
"technical explanation"
],
"task_output": {
"summary": "Researching with skills: literature search, information synthesis, technical explanation",
"focus": [
"collect supporting market signals",
"distill concise findings",
"translate evidence into technical context"
]
},
"previous_results": [
{
"persona_name": "Design Persona",
"role": "Designer",
"task_output": {
"summary": "Designing with skills: UI Design, UX Research, Prototyping, Adobe XD, Figma",
"focus": [
"clarify the user journey",
"reduce interface friction",
"prepare a usable design brief"
]
}
}
]
},
"Marketing Persona": {
"persona_name": "Marketing Persona",
"role": "Marketing Manager",
"skills": [
"copywriting",
"campaign design",
"product positioning"
],
"task_output": {
"summary": "Marketing with skills: copywriting, campaign design, product positioning",
"focus": [
"turn research into positioning",
"shape a campaign-ready narrative",
"package the final deliverable"
]
},
"previous_results": [
{
"persona_name": "Design Persona",
"role": "Designer",
"task_output": {
"summary": "Designing with skills: UI Design, UX Research, Prototyping, Adobe XD, Figma",
"focus": [
"clarify the user journey",
"reduce interface friction",
"prepare a usable design brief"
]
}
},
{
"persona_name": "Research Persona",
"role": "Researcher",
"task_output": {
"summary": "Researching with skills: literature search, information synthesis, technical explanation",
"focus": [
"collect supporting market signals",
"distill concise findings",
"translate evidence into technical context"
]
}
}
]
}
},
"final_deliverable": {
"task_name": "Market Research & Design Collaboration",
"prepared_by": "Marketing Persona",
"persona_sequence": [
"Design Persona",
"Research Persona",
"Marketing Persona"
],
"design_brief": {
"summary": "Designing with skills: UI Design, UX Research, Prototyping, Adobe XD, Figma",
"focus": [
"clarify the user journey",
"reduce interface friction",
"prepare a usable design brief"
]
},
"research_summary": {
"summary": "Researching with skills: literature search, information synthesis, technical explanation",
"focus": [
"collect supporting market signals",
"distill concise findings",
"translate evidence into technical context"
]
},
"marketing_plan": {
"summary": "Marketing with skills: copywriting, campaign design, product positioning",
"focus": [
"turn research into positioning",
"shape a campaign-ready narrative",
"package the final deliverable"
]
}
}
}

Notes

• this PR is stacked on top of feat: upgrade persona workflow to collaborative task with shared context #10