chore(state): record CRG-grade update from estate sweep

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: hyperpolymath

.machine_readable/6a2/STATE.a2ml

@@ -12,7 +12,7 @@ status = "active"
 name = "universal-chat-extractor"
 completion-percentage = 5
 phase = "In development"
-crg-grade = "C"
+crg-grade = "E"
 
 [test-coverage]
 crg-grade-achieved = "C"