{
  "scheduling": {
    "id": "error-messages",
    "name": "Error Messages",
    "goal": "Write consistent, actionable Go validation error messages following the what-is-wrong + what-is-expected + example template",
    "intent_signature": "compose_error_message($error_context, $invalid_input, $validation_rule) -> $error_message",
    "inputs": ["$error_context", "$invalid_input", "$validation_rule"],
    "outputs": ["$error_message"],
    "dependencies": [],
    "control_flow_features": ["conditional", "sequential"],
    "entry_scene": "scene_reason",
    "subscene_refs": []
  },
  "scenes": [
    {
      "id": "scene_reason",
      "type": "REASON",
      "goal": "Determine error category and required message components",
      "entry_condition": "$error_context and $validation_rule are available",
      "exit_condition": "$error_category and $message_components are selected",
      "next_scene_rules": [{ "condition": "category determined", "target": "scene_act" }],
      "inputs": ["$error_context", "$invalid_input", "$validation_rule"],
      "outputs": ["$error_category", "$message_components"],
      "entry_logic_step": "step_reason_classify"
    },
    {
      "id": "scene_act",
      "type": "ACT",
      "goal": "Compose error message string using the three-part template",
      "entry_condition": "$error_category and $message_components are ready",
      "exit_condition": "$error_message is composed",
      "next_scene_rules": [{ "condition": "success", "target": "scene_verify" }],
      "inputs": ["$error_category", "$message_components", "$invalid_input"],
      "outputs": ["$error_message"],
      "entry_logic_step": "step_act_compose"
    },
    {
      "id": "scene_verify",
      "type": "VERIFY",
      "goal": "Verify that the composed error message is complete and actionable",
      "entry_condition": "$error_message is composed",
      "exit_condition": "$error_message passes completeness check",
      "next_scene_rules": [
        { "condition": "message is complete and actionable", "target": "END_SUCCESS" },
        { "condition": "message is incomplete", "target": "END_FAIL" }
      ],
      "inputs": ["$error_message"],
      "outputs": ["$error_message"],
      "entry_logic_step": "step_verify_check"
    }
  ],
  "logic_steps": [
    {
      "id": "step_reason_classify",
      "scene_id": "scene_reason",
      "action_type": "SELECT",
      "resource_scope": "MEMORY",
      "description": "Classify the error as format, type, enum, or configuration validation to determine required message components",
      "inputs": { "context": "$error_context", "rule": "$validation_rule" },
      "outputs": { "category": "$error_category", "components": "$message_components" },
      "next": "YIELD_SUCCESS"
    },
    {
      "id": "step_act_compose",
      "scene_id": "scene_act",
      "action_type": "WRITE",
      "resource_scope": "MEMORY",
      "description": "Compose the error message string: [what is wrong]. [what is expected]. [example of correct usage]",
      "inputs": { "category": "$error_category", "components": "$message_components", "input": "$invalid_input" },
      "outputs": { "message": "$error_message" },
      "next": "YIELD_SUCCESS"
    },
    {
      "id": "step_verify_check",
      "scene_id": "scene_verify",
      "action_type": "VALIDATE",
      "resource_scope": "MEMORY",
      "description": "Check that $error_message contains all three template components: problem statement, expected format or values, and a concrete usage example",
      "inputs": { "message": "$error_message" },
      "outputs": { "validated": "$error_message" },
      "next": "YIELD_SUCCESS"
    }
  ]
}