Prompt Section Extractor

Parse named prompt sections from explicit boundary markers.

Requirements

• Define extract_sections(text).
• Sections start with a line like <<<name>>>.
• A section ends with a line exactly <<<END>>>.
• Return {"sections": dict, "errors": list}.
• Store section content without the boundary lines.
• Strip one trailing newline from section content.
• Duplicate section names should produce duplicate:name.
• Text outside sections that is not blank should produce outside_text.
• Unterminated sections should produce unterminated:name.

Example

Constraints

• Use explicit state tracking.
• Preserve internal newlines inside sections.
• Keep errors deterministic.