{
  "native_structured_media": {
    "description": "Native structured image and video parts remain eligible for the model engine.",
    "payload": {
      "messages": [
        {
          "role": "user",
          "content": [
            {"type": "text", "text": "Describe the invented media."},
            {"type": "image_url", "image_url": {"url": "data:image/png;base64,STRUCTURED_IMAGE_CANARY"}},
            {"type": "video", "video": "invented-video.mp4"}
          ]
        }
      ],
      "tools": [],
      "add_generation_prompt": true
    }
  },
  "textual_image_exchanges": {
    "description": "Every textual image tool exchange and an assistant-side decode copy are removed.",
    "payload": {
      "messages": [
        {"role": "user", "content": "Create two invented images."},
        {
          "role": "assistant",
          "content": "first image generation call",
          "tool_calls": [{"type": "function", "function": {"name": "terminal", "arguments": {"command": "generate first image"}}}]
        },
        {"role": "tool", "content": "{\"images\":[\"{{PNG_OLD}}\"]}"},
        {
          "role": "assistant",
          "content": "assistant-side image byte copy",
          "tool_calls": [{"type": "function", "function": {"name": "terminal", "arguments": {"command": "base64.b64decode(invented_buffer)"}}}]
        },
        {"role": "tool", "content": "invented decode result"},
        {
          "role": "assistant",
          "content": "second image generation call",
          "tool_calls": [{"type": "function", "function": {"name": "terminal", "arguments": {"command": "generate second image"}}}]
        },
        {"role": "tool", "content": "{\"images\":[\"{{PNG_NEW}}\"]}"},
        {"role": "user", "content": "Continue without the textual image history."}
      ],
      "tools": [],
      "add_generation_prompt": true
    }
  },
  "latest_audio_video": {
    "description": "Only the latest explicit textual audio and video results remain.",
    "payload": {
      "messages": [
        {"role": "user", "content": "Create invented audio and video."},
        {"role": "assistant", "content": "old audio generation call", "tool_calls": [{"type": "function", "function": {"name": "terminal", "arguments": {"command": "old audio"}}}]},
        {"role": "tool", "content": "{\"audio\":\"{{AUDIO_OLD}}\"}"},
        {"role": "assistant", "content": "latest audio generation call", "tool_calls": [{"type": "function", "function": {"name": "terminal", "arguments": {"command": "latest audio"}}}]},
        {"role": "tool", "content": "{\"audio\":\"{{AUDIO_NEW}}\"}"},
        {"role": "assistant", "content": "old video generation call", "tool_calls": [{"type": "function", "function": {"name": "terminal", "arguments": {"command": "old video"}}}]},
        {"role": "tool", "content": "{\"video\":\"{{VIDEO_OLD}}\"}"},
        {"role": "assistant", "content": "latest video generation call", "tool_calls": [{"type": "function", "function": {"name": "terminal", "arguments": {"command": "latest video"}}}]},
        {"role": "tool", "content": "{\"video\":\"{{VIDEO_NEW}}\"}"},
        {"role": "user", "content": "Continue with only the latest explicit media results."}
      ],
      "tools": [],
      "add_generation_prompt": true
    }
  },
  "truncated_image_history": {
    "description": "A long truncated textual image result is removed as a complete exchange.",
    "payload": {
      "messages": [
        {"role": "user", "content": "Create an invented image."},
        {"role": "assistant", "content": "truncated image generation call", "tool_calls": [{"type": "function", "function": {"name": "terminal", "arguments": {"command": "generate truncated image"}}}]},
        {"role": "tool", "content": "{\"images\":[\"{{TRUNCATED_IMAGE}}\"]}"},
        {"role": "user", "content": "Continue after truncation."}
      ],
      "tools": [],
      "add_generation_prompt": true
    }
  },
  "incidental_signature_collision": {
    "description": "A long ordinary tool result containing an incidental PNG signature is retained when no image-result structure is present.",
    "payload": {
      "messages": [
        {"role": "user", "content": "Inspect an invented diagnostic."},
        {"role": "assistant", "content": "ordinary diagnostic call", "tool_calls": [{"type": "function", "function": {"name": "terminal", "arguments": {"command": "inspect diagnostic"}}}]},
        {"role": "tool", "content": "{\"note\":\"{{INCIDENTAL_SIGNATURE}}\"}"},
        {"role": "user", "content": "Keep the ordinary result."}
      ],
      "tools": [],
      "add_generation_prompt": true
    }
  },
  "malformed_ordering": {
    "description": "A system message after the first turn fails template validation.",
    "payload": {
      "messages": [
        {"role": "user", "content": "Start normally."},
        {"role": "system", "content": "This invented system message is deliberately misplaced."}
      ],
      "tools": [],
      "add_generation_prompt": true
    }
  },
  "ordinary_text_tool_history": {
    "description": "Ordinary text and tool history renders exactly like the stock baseline.",
    "payload": {
      "messages": [
        {"role": "user", "content": "Check the invented service."},
        {"role": "assistant", "content": "checking status", "tool_calls": [{"type": "function", "function": {"name": "service_status", "arguments": {"scope": "local"}}}]},
        {"role": "tool", "content": "{\"ok\":true}"},
        {"role": "assistant", "content": "The invented service is healthy."},
        {"role": "user", "content": "Thank you."}
      ],
      "tools": [],
      "add_generation_prompt": true
    }
  }
}