{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "https://civitas-cerebrum.github.io/element-interactions/schemas/subagent-returns/section-agent.schema.json",
  "title": "Section-agent return",
  "description": "Section-agent serves two modes: per-section work (require `section`) and phase-1-only groundwork (no section). The schema is permissive on additional properties because the groundwork mode includes a rich, model-shaped status body (artifacts, audit-tags, mode, etc.) that isn't section-specific.",
  "type": "object",
  "required": ["handover"],
  "additionalProperties": true,
  "properties": {
    "handover": {
      "allOf": [
        { "$ref": "handover.schema.json" }
      ]
    },
    "section": { "type": "string" },
    "cycle": { "type": "integer", "minimum": 1 },
    "kind": { "enum": ["section", "edge-probe"] },
    "routes-driven": { "type": "array", "items": { "type": "string" } },
    "routes-suggested": { "type": "array", "items": { "type": "string" } },
    "flows-identified": { "type": "integer", "minimum": 0 },
    "state-variations-recorded": { "type": "integer", "minimum": 0 },
    "new-sections-discovered": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["id"],
        "properties": { "id": { "type": "string" }, "rationale": { "type": "string" } }
      }
    },
    "edge-findings": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["id", "summary"],
        "properties": { "id": { "type": "string" }, "summary": { "type": "string" } }
      }
    },
    "gated-deferred-to-coverage-expansion": {
      "type": "array",
      "items": {
        "type": "object",
        "required": ["section"],
        "properties": { "section": { "type": "string" }, "reason": { "type": "string" } }
      }
    },
    "spill": { "type": "string" },
    "summary": { "type": "string" }
  },
  "allOf": [
    {
      "if": {
        "type": "object",
        "properties": { "kind": { "const": "edge-probe" } }
      },
      "then": {
        "type": "object",
        "required": ["edge-findings"],
        "properties": { "edge-findings": { "type": "array" } }
      }
    },
    {
      "if": {
        "type": "object",
        "required": ["section"],
        "properties": {
          "section": { "type": "string" },
          "handover": { "type": "object", "properties": { "status": { "const": "section-complete" } } }
        }
      },
      "then": {
        "type": "object",
        "required": ["spill"],
        "properties": { "spill": { "type": "string", "minLength": 1 } }
      }
    }
  ]
}