JUDGE (§470): the runner's step-log is an old logs section kept 100 days of 128 MiB

The manifest declared step-log as a stream; §470 amends §85 to a logs section (max-age-days 100, max-mib 128), the form the judge's predefined-forms rule accepts.

Builds: design 47 G §470, §486

Claude-Session: https://claude.ai/code/session_01NcbgfGKaxw984XyAPfLm4h

modules/mesh-delivery-pipeline/module.json

@@ -68,13 +68,6 @@
     }
   ],
   "streams": [
-    {
-      "name": "step-log",
-      "events": [
-        "step-log.**"
-      ],
-      "max-mib": 128
-    },
     {
       "name": "mesh-delivery-pipeline-findings",
       "events": [
@@ -154,5 +147,12 @@
         ]
       }
     ]
-  }
+  },
+  "logs": [
+    {
+      "name": "step-log",
+      "max-age-days": 100,
+      "max-mib": 128
+    }
+  ]
 }