banana-prop-prompt

name	banana-prop-prompt
description	Use when converting prop analysis results into Banana JSON prompts for the current Banana/Veo pipeline. This stage should preserve visible structure, layout blocks, multi-view detail, and generation-critical markings.

Banana Prop Prompt Generation

Overview

This skill is part of the current Banana + Veo mainline.

The prompt should preserve:

• shape and dimensions
• visible markings
• document or cover layout
• front / side / back information when useful
• a clean white-background reference-sheet presentation when helpful

Authority

Follow the active project spec first.

Current mainline reference:

• ${OPENCLAW_HOME:-~/.openclaw}/agents/flashxiaolagu制作/production-optimization-spec.md

Input

• analysis/prop-analysis.json
• analysis/film-type-analysis.json

This stage must inherit:

• selected_option.ratio_design
• selected_option.style_design

Authority order:

1. prop-analysis.json visible structure, layout blocks, markings, and multi-view needs
2. film-type-analysis.json -> selected_option for branch ratio and branch style metadata

If the selected option is missing ratio_design or style_design, stop and request a corrected upstream file instead of guessing.

Output

• prompts/banana-prop-prompts.md
• prompts/banana-prop-prompts.json

Required JSON Shape

{
  "ratio_design": "16:9",
  "style_design": "[窗光] + [青橙色调] + [高反差] + [电影数字质感]",
  "props": [
    {
      "prop_id": "prop_001",
      "prop_name": "道具名称",
      "category": "文件/报告",
      "ratio_design": "16:9",
      "style_design": "[窗光] + [青橙色调] + [高反差] + [电影数字质感]",
      "prompt": {
        "type": "麦格芬/象征/功能",
        "description": "形状、材质、颜色、细节",
        "lighting": {
          "setup": "中性摄影棚柔光",
          "background": "纯白色无缝背景"
        },
        "camera_angle": "主要观看角度",
        "technical_specs": "8K resolution, photorealistic PBR textures, zero distortion",
        "style_reference": "camera / lens / material reference if useful",
        "layout_instruction": "multi-panel prop reference sheet",
        "negative_prompt": "artifact / stylization exclusions"
      }
    }
  ]
}

Writing Rules

1. description must stay concrete

Keep:

• shape
• thickness
• material
• surface finish
• visible text blocks
• stamps, barcodes, logos, wear marks

2. books, reports, and packages must preserve side information

If side information matters, include it in the description and layout plan:

• front
• back
• spine / thickness
• macro material or print detail

3. layout_instruction should match the prop type

Recommended patterns:

• ordinary hero prop: front + side + macro detail
• book / packaging: front + spine/side + back or macro detail
• document: readable front layout sheet or front + detail panels

It should also respect the inherited ratio_design:

• portrait ratio -> compact stacked reference board
• landscape ratio -> wider left-to-right reference board
• do not silently swap portrait and landscape board logic

4. technical_specs stays fixed

Use:

• 8K resolution, photorealistic PBR textures, zero distortion

The selected style_design should remain branch metadata. Do not replace the neutral white-background reference-sheet lighting with scene-style lighting.

5. negative_prompt is required

Exclude:

• text corruption
• watermark
• stylization
• CGI feel
• plastic toy look
• unrealistic glossy material

Inheritance Checklist

Before writing the final JSON, verify:

• top-level ratio_design matches the selected type-analysis option
• top-level style_design matches the selected type-analysis option
• every prop item repeats the same inherited ratio_design / style_design
• layout_instruction matches the inherited ratio branch
• studio reference lighting stays neutral and is not overwritten by scene-style lighting

Constraints

1. Output must be valid JSON.
2. The prompt must preserve visible structure and markings.
3. Top-level and per-prop ratio_design / style_design must match the selected type-analysis option.
4. Hero props should usually use a multi-panel layout.
5. layout_instruction must follow the inherited ratio branch.
6. Negative prompt is required.
7. Output both markdown and json.