refactor: vwts_scraper — proper Python package structure

- Split single file into 8 focused modules (399 lines total):
  config.py — constants
  fetch.py — HTTP GET with retries
  paginate.py — page_count + HEAD verification
  parse.py — HTML parsing (topics, posts, tags)
  state.py — per-section state.json
  output.py — JSONL with file rotation
  run.py — main orchestration loop
  __main__.py — CLI entry point
- Run: python -m vwts_scraper <URL>
- Page count method fully tested (13 sections, 100+ topics, 0 errors)
- Resume support (Ctrl+C → state saved)
- Per-section state files (no conflicts between sections)

vwts_scraper/__main__.py

@@ -0,0 +1,48 @@
+"""Точка входа.
+
+Использование:
+  python -m vwts_scraper https://vwts.ru/forum/vag/benzinovye-dvigateli/
+
+Пауза: Ctrl+C → состояние сохраняется.
+Продолжить: та же команда.
+"""
+
+import sys, logging
+from pathlib import Path
+
+# Настройка логирования
+OUTPUT_DIR = Path("vwts_data")
+OUTPUT_DIR.mkdir(parents=True, exist_ok=True)
+
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s [%(levelname)s] %(message)s",
+    datefmt="%H:%M:%S",
+    handlers=[
+        logging.StreamHandler(sys.stdout),
+        logging.FileHandler(OUTPUT_DIR / "scraper.log", encoding="utf-8"),
+    ],
+)
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        print("❌ Укажи URL раздела. Пример:")
+        print("   python -m vwts_scraper "
+              "https://vwts.ru/forum/vag/benzinovye-dvigateli/")
+        sys.exit(1)
+
+    from .run import run
+    section_url = sys.argv[1].rstrip("/") + "/"
+
+    log = logging.getLogger(__name__)
+    log.info("=" * 60)
+    log.info(f"🚀 vwts.ru — раздел: {section_url.split('/')[-2]}")
+    log.info(f"📂 {OUTPUT_DIR}/{section_url.split('/')[-2]}/part_*.jsonl")
+    log.info("🛑 Ctrl+C = пауза | Повторить команду = продолжить")
+    log.info("=" * 60)
+
+    try:
+        run(section_url)
+    except KeyboardInterrupt:
+        log.info("\n🛑 ПАУЗА. Продолжить: та же команда.")
+        sys.exit(0)