prd-quality-gate

<prd_quality_gate> A well-formed PRD (GitHub issue body) must contain ALL of the following sections as markdown headings (## or ###). Missing sections reduce plan quality and risk hallucinated scope. Required sections: - Executive Summary - Problem Statement - Goals - Functional Requirements - Acceptance Criteria - Verification Plan When the quality gate is ENABLED (blocking): - Missing any required section → pipeline fails immediately with an actionable message listing the missing sections. - The user must update the issue body and re-trigger the pipeline. When the quality gate is DISABLED (default, warning-only): - Missing sections → a warning is logged to the terminal lifecycle stream. - Planning proceeds. The planner should still note gaps in its output. Section matching is case-insensitive against ## and ### headings. Exact heading text must appear (e.g. "## Executive Summary" or "### Goals"). Headings nested inside code fences are ignored by convention (they are examples, not structure). </prd_quality_gate>