backup materials and knowledge-base docs

文档润色流和知识库构建流/claude-scholar/skills/code-review-excellence/scripts/pr-analyzer.py

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+#!/usr/bin/env python3
+from __future__ import annotations
+
+import argparse
+import subprocess
+from pathlib import Path
+
+
+def parse_args() -> argparse.Namespace:
+    parser = argparse.ArgumentParser(description='Summarize git diff size for review planning.')
+    parser.add_argument('--repo', default='.', help='Repository path')
+    parser.add_argument('--base', default='HEAD~1', help='Base revision')
+    parser.add_argument('--head', default='HEAD', help='Head revision')
+    return parser.parse_args()
+
+
+def main() -> int:
+    args = parse_args()
+    repo = Path(args.repo).resolve()
+    result = subprocess.run(
+        ['git', '-C', str(repo), 'diff', '--numstat', args.base, args.head],
+        capture_output=True,
+        text=True,
+        check=False,
+    )
+    if result.returncode != 0:
+        print(result.stderr.strip() or 'git diff failed')
+        return result.returncode
+    files = 0
+    added = 0
+    deleted = 0
+    for line in result.stdout.splitlines():
+        parts = line.split('	')
+        if len(parts) != 3:
+            continue
+        a, d, _ = parts
+        if a.isdigit():
+            added += int(a)
+        if d.isdigit():
+            deleted += int(d)
+        files += 1
+    print(f'files={files}')
+    print(f'added={added}')
+    print(f'deleted={deleted}')
+    return 0
+
+
+if __name__ == '__main__':
+    raise SystemExit(main())