pi-flows

Create and edit pi-flows flows and agents from the main session. Use when the user wants to create a new flow, add or change an agent, or edit an existing flow/agent. Covers agent frontmatter, flow YAML, step types (agent, fork, agent-decision, code, code-decision), model references, the flow_agents/flow_write tools, code-handler generation, write locations, editing an existing flow vs creating one, and fixing validation errors.