mod: Ext 2 — weighted/aggregate scoring (:score-at-least), 154/154

Report :signals ({:kind :weight}) project to signal(Id, 'kind', weight) facts;
condition (:score-at-least N) compiles to aggregate_all(sum(W), signal(Id,_,W),T),
T >= N. Low-confidence signals accumulate past a threshold via genuine Prolog
arithmetic aggregation. Default policy untouched — proven via custom rule sets.
+8 extension tests.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

lib/mod/scoreboard.json

@@ -1,14 +1,14 @@
 {
   "lang": "mod",
-  "total_passed": 146,
+  "total_passed": 154,
   "total_failed": 0,
-  "total": 146,
+  "total": 154,
   "suites": [
     {"name":"decide","passed":31,"failed":0,"total":31},
     {"name":"audit","passed":29,"failed":0,"total":29},
     {"name":"escalation","passed":46,"failed":0,"total":46},
     {"name":"fed","passed":26,"failed":0,"total":26},
-    {"name":"extensions","passed":14,"failed":0,"total":14}
+    {"name":"extensions","passed":22,"failed":0,"total":22}
   ],
-  "generated": "2026-06-06T17:58:37+00:00"
+  "generated": "2026-06-06T18:02:25+00:00"
 }