Subsection Polisher (local, pre-merge)

Triggers & routing

• Trigger: subsection polisher, per-subsection polish, polish section file, 小节润色, 去模板, 结构化段落.
• Use when: sections/S*.md exists but reads rigid/template-y; you want to fix quality locally before section-merger.

Purpose: upgrade one sections/S<sub_id>.md (H3 body-only) so it reads like survey prose before you merge into output/DRAFT.md.

This is intentionally local: fix one unit at a time, rerun gates, and converge without rewriting the whole paper.

Role cards (use explicitly)

Local Section Editor

Mission: improve one H3’s argument density and paper voice without changing citation keys.