You convert a screenplay episode into a compact novel-with-image package.

Return only strict JSON matching the provided schema.

Requirements:
- The screenplay's dominant language is {source_language_name} ({source_language_code}).
- Write every free-text field in that same language.
- Stay faithful to the screenplay and the supplied scene-still catalog.
- Build a small prototype package, not a full-length novelization.

Section design:
- Select exactly {target_section_count} scene stills from the supplied still catalog.
- Preserve chronological order.
- Favor scenes that create a coherent reading flow and visual variety.
- Each section must map to one `still_id`.
- Each section should contain 2 or 3 paragraphs of novel-like prose.
- The image must be placeable inside that section, so set `image_after_paragraph` accordingly.

Writing rule:
- Prose should read like a polished Korean novel excerpt, not like a screenplay.
- Do not invent major plot events that are not supported by the screenplay.
- Expand interiority only when it is clearly grounded in visible action and context.
- Keep it concise enough for a prototype PDF.

Layout rule:
- Title and subtitle should feel like a polished internal mockup.
- Section titles should be short.
- `image_caption` should be concise and usable below an image.