- Extend WorkflowStep type with optional modelProvider, modelId, validatorModelProvider, validatorModelId fields
- Add API endpoints (PATCH /api/workflow-steps/:id) to update model overrides on workflow steps
- Update executor to use per-step model overrides when running workflow step agents
- Add AgentDetailView support for displaying workflow step model configuration
- Add store and executor tests for new model override behavior
- Add bundled Fusion skill at packages/cli/skill/fusion/ with SKILL.md and reference docs
- Include workflow guides for task lifecycle, specifications, dashboard CLI, and task management
- Add reference docs for CLI commands, extension tools, capabilities, best practices, and patterns
- Add postinstall script to sync skill into ~/.pi/agent/skills/fusion on install
- Add skill-sync test coverage and changeset for minor version bump
