github-pr-bodylisted

## Input - PR number and `owner/repo` (required) - Existing PR template/body context (required) - Authenticated `gh` environment (required) ## Output Specification Return structured Markdown in accordance with [references/common-output-format.md](references/common-output-format.md). Structured PR output: - Baseline mode: update `## Overview` and `## Changes`. - Full-body mode: apply complete body via `--body-file`. - `## Changes` must classify files (Config/Docs/Feature/Test/Other) with line counts. - Report selected mode and reason. ## Execution Scope - **Always use `scripts/pr_body.sh` or `scripts/pr_fetch.sh`**. Do not run individual `gh` commands. - `pr_body.sh` is deterministic and idempotent. ### USE FOR: - generate deterministic baseline PR body sections - regenerate PR body from template sections after code updates - fill remaining sections in full-body mode from validated context ### DO NOT USE FOR: - post review comments or resolve review threads - create commits or modify source files - replace issue triage workflows ## Reference Files Guide - [common-checklist.md](references/common-checklist.md) (always read) - [common-output-format.md](references/common-output-format.md) (always read) - [common-troubleshooting.md](references/common-troubleshooting.md) (read on failure) - [category-pr-body-guidelines.md](references/category-pr-body-guidelines.md) (read when full-body mode) - [category-template-mapping.md](references/category-template-mapping.md) (read