manual_slop/conductor/tracks/per_ticket_model_20260306/plan.md

Implementation Plan: Per-Ticket Model Override (per_ticket_model_20260306)

Reference: Spec | Architecture Guide

Phase 1: Model Override Field

Focus: Add field to Ticket dataclass

• Task 1.1: Initialize MMA Environment

• Task 1.2: Add model_override to Ticket (245653c)

  • WHERE: src/models.py Ticket dataclass
  • WHAT: Add optional model override field
  • HOW:

    @dataclass
    class Ticket:
     # ... existing fields ...
     model_override: Optional[str] = None
    

• Task 1.3: Update serialization (245653c)

  • WHERE: src/models.py Ticket.to_dict() and from_dict()
  • WHAT: Include model_override
  • HOW: Add field to dict conversion

Phase 2: Model Dropdown UI

Focus: Add model selection to ticket display

• Task 2.1: Get available models list (63d1b04)

• Task 2.2: Add dropdown to ticket UI (63d1b04)

• Task 3.1: Color-code override tickets (63d1b04)

Phase 4: Execution Integration

Focus: Use override in worker execution

• Task 4.1: Check override in ConductorEngine.run()
  • WHERE: src/multi_agent_conductor.py run()
  • WHAT: Use ticket.model_override if set
  • HOW:

    if ticket.model_override:
     model_name = ticket.model_override
    else:
     # Use existing escalation logic
     models = ["gemini-2.5-flash-lite", "gemini-2.5-flash", "gemini-3.1-pro-preview"]
     model_idx = min(ticket.retry_count, len(models) - 1)
     model_name = models[model_idx]
    

Phase 5: Testing

• Task 5.1: Write unit tests
• Task 5.2: Conductor - Phase Verification