EAT overnight: restore signed UNMEASURED coverage-card.json.

coverage-card.json

@@ -1,12 +1,6 @@
 {
-  "schema": "https://councilof.ai/schema/card-v0.json",
-  "surface": "public.notice",
-  "subject": "GSPC human-labour-index UNMEASURED coverage",
   "as_of": "2026-08-31T13:15:03Z",
-  "source_urls": [
-    "https://councilof.ai/api/gspc",
-    "https://huggingface.co/datasets/csoai/gspc-human-labour-index"
-  ],
+  "did": "did:web:csoai.org#board-attestation-1",
   "payload": {
     "axis": "human-labour-index",
     "cite": "https://councilof.ai/api/gspc",
@@ -20,18 +14,22 @@
     "status": "UNMEASURED",
     "task": "cited components only; no composite"
   },
+  "schema": "https://councilof.ai/schema/card-v0.json",
   "sha256": "ad3aa07d16ac2de3496d79e2d49fdb47e729ce3bcdec43263beb41ab8409fe50",
-  "signed": false,
-  "sig_ed25519": null,
-  "unmeasured": [
-    "human-labour-index",
-    "n=0",
-    "sig_ed25519"
+  "sig_ed25519": "9c2fa10dfbbfea573e20f9dc2f9efbf0f818fcff5f9205516d802dffcd5daa383cb588b67db784c8684f50285dbae5fda2088be74860d851297da2448822fb08",
+  "source_urls": [
+    "https://councilof.ai/api/gspc",
+    "https://huggingface.co/datasets/csoai/gspc-human-labour-index"
   ],
+  "subject": "GSPC human-labour-index UNMEASURED coverage",
+  "surface": "public.notice",
   "tags": [
     "coverage:UNMEASURED",
     "not-a-grade",
     "no-composite"
   ],
-  "note": "Unsigned UNMEASURED shell. Ready \u2260 measured. No board DID on n=0. Not a grade. Not a certificate."
+  "unmeasured": [
+    "human-labour-index",
+    "n=0"
+  ]
 }