Refactor .zenodo.json metadata and access details

Updated metadata structure and added publication date.

Author: DiogoRibeiro7

.zenodo.json

@@ -1,34 +1,45 @@
 {
-  "title": "ssspx: Production-grade Single-Source Shortest Paths",
-  "creators": [
-    {
-      "orcid": "0009-0001-2022-7072",
-      "given_name": "Diogo",
-      "family_name": "Ribeiro",
-      "affiliation": "ESMAD - Instituto Politécnico do Porto"
-    }
-  ],
-  "description": "A deterministic single-source shortest paths solver with an optional transform, benchmarking tools, and documentation.",
-  "keywords": [
-    "graphs",
-    "shortest paths",
-    "Python",
-    "algorithms",
-    "benchmarking"
-  ],
-  "license": "MIT",
-  "upload_type": "software",
-  "access_right": "open",
-  "related_identifiers": [
-    {
-      "scheme": "url",
-      "identifier": "https://github.com/DiogoRibeiro7/bmssp-backhup",
-      "relation": "isSupplementTo"
-    }
-  ],
-  "funding": [
-    {
-      "funder": "ESMAD - Instituto Politécnico do Porto"
-    }
-  ]
+  "metadata": {
+    "title": "ssspx: Production-grade Single-Source Shortest Paths",
+    "description": "A deterministic single-source shortest paths solver with an optional transform, benchmarking tools, and documentation.",
+    "publication_date": "2025-10-17",
+    "resource_type": { "id": "software" },
+    "creators": [
+      {
+        "person_or_org": {
+          "type": "personal",
+          "given_name": "Diogo",
+          "family_name": "Ribeiro",
+          "identifiers": [
+            { "scheme": "orcid", "identifier": "0009-0001-2022-7072" }
+          ]
+        },
+        "affiliations": [
+          { "name": "ESMAD - Instituto Politécnico do Porto" }
+        ],
+        "role": { "id": "cre" }
+      }
+    ],
+    "license": { "id": "mit-license" },
+    "keywords": ["graphs", "shortest paths", "Python", "algorithms", "benchmarking"],
+    "related_identifiers": [
+      {
+        "relation_type": { "id": "isSupplementTo" },
+        "scheme": "url",
+        "identifier": "https://github.com/DiogoRibeiro7/bmssp-backhup"
+      }
+    ],
+    "funding": [
+      {
+        "funder": { "name": "ESMAD - Instituto Politécnico do Porto" }
+      }
+    ],
+    "version": "v1.0.0",
+    "language": "eng"
+  },
+  "access": {
+    "record": "public",
+    "files": "public"
+  }
 }
+