finish off sprint advisories and sprints

docs/schemas/predicates/deltasig-v2.schema.json

@@ -58,6 +58,16 @@
       "type": "object",
       "additionalProperties": true,
       "description": "Additional metadata"
+    },
+    "sbomDigest": {
+      "type": "string",
+      "pattern": "^sha256:[a-f0-9]{64}$",
+      "description": "SHA-256 digest of the associated SBOM document"
+    },
+    "largeBlobs": {
+      "type": "array",
+      "items": { "$ref": "#/$defs/largeBlobReference" },
+      "description": "References to large binary blobs stored out-of-band (by digest)"
     }
   },
   "$defs": {
@@ -346,6 +356,31 @@
           "description": "Total size of IR diffs stored in CAS"
         }
       }
+    },
+    "largeBlobReference": {
+      "type": "object",
+      "required": ["kind", "digest"],
+      "properties": {
+        "kind": {
+          "type": "string",
+          "enum": ["preBinary", "postBinary", "debugSymbols", "irDiff"],
+          "description": "Blob kind: preBinary, postBinary, debugSymbols, etc."
+        },
+        "digest": {
+          "type": "string",
+          "pattern": "^sha256:[a-f0-9]{64}$",
+          "description": "Content-addressable digest (e.g., sha256:abc123...)"
+        },
+        "mediaType": {
+          "type": "string",
+          "description": "Media type of the blob"
+        },
+        "sizeBytes": {
+          "type": "integer",
+          "minimum": 0,
+          "description": "Size in bytes (for transfer planning)"
+        }
+      }
     }
   }
 }