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/config.py

@@ -0,0 +1,13 @@
+"""Константы."""
+
+import socket
+
+# Глобальный таймаут сокетов
+socket.setdefaulttimeout(30)
+
+DELAY        = 1.5                      # секунд между запросами
+TIMEOUT      = (10, 30)                 # (connect, read)
+TOPICS_PER_FILE = 100
+HEADERS = {
+    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36"
+}