Section Editor

Section Editor auto-collapses contract sections and gives you quick per-section expand/collapse controls. Features - Detects **Contract Type** and collapses non-matching sections. - Adds per-section **expand/collapse buttons** (`▾` / `▸`) for manual overrides. - Adds a popup **Section Mover** with drag-and-drop ordering for main section cards. - Supports **Auto** and **Manual** mode from the popup. - Supports **host-specific mapping** for field labels, contract types, and always-collapsed headers.