K&R database cleanup: handoff bundle

Self-contained bundle to continue the case-summary enrichment pass (70/256 done). sources/ holds the 364 .txt dossiers; scripts use relative paths.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018FJRciSWZc9HftS2edbzBf

merge-output/staging/260/index.json

@@ -0,0 +1,13 @@
+[
+  {
+    "case": 260,
+    "n": 1,
+    "field": "url",
+    "url": "https://x.com/nategeier/status/1973982311592177940",
+    "host": "x.com",
+    "fetched_at": "2026-08-06T13:47:14+00:00",
+    "verdict": "NOT AN ARTICLE",
+    "method": "none",
+    "note": "video or social post; recorded as a source reference, not transcribed"
+  }
+]