{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Plan Object Schema",
  "description": "Implementation plan from cli-lite-planning-agent or direct planning",
  "type": "object",
  "required": [
    "summary",
    "approach",
    "tasks",
    "estimated_time",
    "recommended_execution",
    "complexity",
    "_metadata"
  ],
  "properties": {
    "summary": {
      "type": "string",
      "description": "2-3 sentence overview of the implementation plan"
    },
    "approach": {
      "type": "string",
      "description": "High-level implementation strategy and methodology"
    },
    "tasks": {
      "type": "array",
      "minItems": 3,
      "maxItems": 10,
      "items": {
        "type": "object",
        "required": ["title", "file", "action", "description", "implementation", "reference", "acceptance"],
        "properties": {
          "title": {
            "type": "string",
            "description": "Task title (action verb + target)"
          },
          "file": {
            "type": "string",
            "description": "Target file path for this task"
          },
          "action": {
            "type": "string",
            "enum": ["Create", "Update", "Implement", "Refactor", "Add", "Delete", "Configure", "Test"],
            "description": "Primary action type"
          },
          "description": {
            "type": "string",
            "description": "What to implement (1-2 sentences)"
          },
          "implementation": {
            "type": "array",
            "items": {"type": "string"},
            "minItems": 3,
            "maxItems": 7,
            "description": "Step-by-step implementation guide"
          },
          "reference": {
            "type": "object",
            "required": ["pattern", "files", "examples"],
            "properties": {
              "pattern": {
                "type": "string",
                "description": "Pattern name to follow"
              },
              "files": {
                "type": "array",
                "items": {"type": "string"},
                "description": "Reference file paths to study"
              },
              "examples": {
                "type": "string",
                "description": "Specific guidance or example references"
              }
            },
            "description": "Reference materials for implementation"
          },
          "acceptance": {
            "type": "array",
            "items": {"type": "string"},
            "minItems": 2,
            "maxItems": 4,
            "description": "Verification criteria for task completion"
          }
        }
      },
      "description": "Structured task breakdown (3-10 tasks)"
    },
    "estimated_time": {
      "type": "string",
      "description": "Total estimated implementation time (e.g., '30 minutes', '2 hours')"
    },
    "recommended_execution": {
      "type": "string",
      "enum": ["Agent", "Codex"],
      "description": "Recommended execution method based on complexity"
    },
    "complexity": {
      "type": "string",
      "enum": ["Low", "Medium", "High"],
      "description": "Task complexity level"
    },
    "_metadata": {
      "type": "object",
      "required": ["timestamp", "source", "planning_mode"],
      "properties": {
        "timestamp": {
          "type": "string",
          "format": "date-time",
          "description": "ISO 8601 timestamp of planning"
        },
        "source": {
          "type": "string",
          "enum": ["cli-lite-planning-agent", "direct-planning"],
          "description": "Planning source"
        },
        "planning_mode": {
          "type": "string",
          "enum": ["direct", "agent-based"],
          "description": "Planning execution mode"
        },
        "duration_seconds": {
          "type": "integer",
          "description": "Planning duration in seconds"
        }
      }
    }
  }
}