Add resumable US policy news collectors and provenance

Collect official crypto and US policy documents with deterministic screening, full bodies and attachments, bounded retries, and durable history cursors. Preserve publication precision and source identity while keeping new collectors disabled.

Add real Congress, GovInfo, DOJ and Federal Register fixtures, offline capture replay, isolated database validation, and rollout instructions. Validate 982 backend tests, frontend checks, and 57 deployment control tests.

backend/tests/test_news_sources.py

@@ -33,7 +33,7 @@ ITEM = """<item><title>Bitcoin &amp; Ethereum</title>
 <dc:creator>News desk</dc:creator><category>Markets</category></item>"""
 
 
-@pytest.mark.parametrize("source", ["CoinDeskSpider", "FedSpider", "BeaSpider"])
+@pytest.mark.parametrize("source", ["CoinDeskSpider", "BeaSpider"])
 def test_rss_preserves_original_summary_time_and_provenance(trading, source):
     from alphapulse.crawler.spiders import rss
     spider = make_spider(getattr(rss, source))
@@ -53,8 +53,8 @@ def test_rss_preserves_original_summary_time_and_provenance(trading, source):
 
 
 def test_rss_identity_survives_revisions_and_different_subfeeds(trading):
-    from alphapulse.crawler.spiders.rss import FedSpider
-    spider = make_spider(FedSpider)
+    from alphapulse.crawler.spiders.rss import CoinDeskSpider
+    spider = make_spider(CoinDeskSpider)
     original, = spider.parse_feed(feed_response(ITEM))
     revised, = spider.parse_feed(feed_response(ITEM.replace("Bitcoin &amp; Ethereum", "Revised headline"), "https://example.invalid/other.xml"))
     assert original["external_id"] == revised["external_id"]