Initial AlphaPulse implementation: news crawler and Binance klines

- Backend (FastAPI, SQLAlchemy 2, Alembic): single-admin cookie auth,
  news/crawler/market APIs with SSE and WebSocket streaming
- Crawler (Scrapy + Scrapy-Redis): wscn_news, wscn_live, cls_depth,
  cls_telegraph spiders, idempotent upserts with revisions, raw response
  archiving, per-source subprocess supervision, restart and backoff
- Market worker: full-history Binance spot/USD-M kline backfill,
  realtime WS stream, hourly and on-reconnect catch-up
- Frontend (Vue 3, Element Plus, UnoCSS, KLineChart): news feed,
  crawler console with live logs, Binance-style chart page
- Deploy: docker compose, nginx site, migrate and daily backup scripts

backend/src/alphapulse/crawler/settings.py

@@ -0,0 +1,45 @@
+import warnings
+
+from scrapy.exceptions import ScrapyDeprecationWarning
+
+from alphapulse.core.config import get_settings
+from alphapulse.core.redis import KEY_PREFIX
+
+BOT_NAME = "alphapulse"
+SPIDER_MODULES = ["alphapulse.crawler.spiders"]
+
+# 采集的是无需登录的公开 JSON 接口；限速由 RedisRateLimitMiddleware 统一控制
+ROBOTSTXT_OBEY = False
+USER_AGENT = "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0 Safari/537.36"
+DEFAULT_REQUEST_HEADERS = {"Accept": "application/json, text/html;q=0.9, */*;q=0.8", "Accept-Language": "zh-CN,zh;q=0.9"}
+COOKIES_ENABLED = False
+TELNETCONSOLE_ENABLED = False
+# 2.19 默认开启的远程控制 HTTP 服务用不上，关掉避免开放端口
+REMOTE_CONTROL_ENABLED = False
+LOG_LEVEL = "INFO"
+
+CONCURRENT_REQUESTS = 4
+DOWNLOAD_TIMEOUT = 15
+RETRY_TIMES = 2
+# 429/403 不重试，交给来源退避
+RETRY_HTTP_CODES = [500, 502, 503, 504, 522, 524, 408]
+
+DOWNLOADER_MIDDLEWARES = {
+    "alphapulse.crawler.middlewares.RedisRateLimitMiddleware": 100,
+    # process_response 按优先级从大到小调用：排在 HttpCompression(590) 之后拿到解压后的响应体，
+    # 排在 Retry(550) 之前，被重试的每次响应也都会记录
+    "alphapulse.crawler.middlewares.RawResponseMiddleware": 580,
+}
+ITEM_PIPELINES = {"alphapulse.crawler.pipelines.NewsPipeline": 300}
+
+# Scrapy-Redis：请求队列与起始任务放 Redis（DB 14，统一 ap: 前缀）
+SCHEDULER = "scrapy_redis.scheduler.Scheduler"
+DUPEFILTER_CLASS = "scrapy_redis.dupefilter.RFPDupeFilter"
+SCHEDULER_PERSIST = True
+SCHEDULER_QUEUE_KEY = f"{KEY_PREFIX}%(spider)s:requests"
+SCHEDULER_DUPEFILTER_KEY = f"{KEY_PREFIX}%(spider)s:dupefilter"
+REDIS_START_URLS_KEY = f"{KEY_PREFIX}%(name)s:start_urls"
+REDIS_URL = get_settings().redis_url
+
+# scrapy-redis 0.9.1 仍按旧签名给 stats 传 spider 参数，每个请求都告警，会刷屏实时日志
+warnings.filterwarnings("ignore", category=ScrapyDeprecationWarning, module="scrapy_redis")