Polish item 1 (option A): add page-level source_url per poll row (verified Wikipedia opinion-polling page); README note; datapackage/croissant/CHECKSUMS/DATASHEET regenerated (Frictionless).

CHECKSUMS.txt

@@ -3,6 +3,7 @@
 049573ba2c7f9ceab402dd0bddb6ee36b81a202c6317aa4fb04af29f9ff56d29  LICENSE-CC-BY-4.0
 0a4e61c305f29e18419959277493beacd9c16df205ce9d8f185f82e16f041297  parse-germany-wiki.mjs
 0caf5d59ab5288882a99e5c33c694c7758888a21f9fdddbbe50d2bafa7ff6043  odds-trajectory.png
+10d39d8cf1c625daf8b107f4eacc753dd0ac3c5ad12a37f5c3cdbd3555b6486d  polls/germany-polls.csv
 1574acfacbe2f2c0c3b3ab02fd29b52424d245c836ea25b002f468c7fcfc74dc  .gitattributes
 2339d44bab56afdca042a34cf2d92c3d1cfea248602e454c76df30e612d8dde3  CITATION.cff
 28727079cb36df69bc7bc4971408b26a254f909951b4aa5da4f9eb71b4781a42  DATASHEET.md
@@ -12,9 +13,8 @@
 71c7e3fc128e7337d2a7e7c0f7e7bc3f630a2aed9341912a9219c52dd80d6da8  raw/germany-2025-official-result.json
 79a4e182a56403206a24b767438ca54cb941b15735bba1ceeb0c2ec01ce864be  odds-snapshot.png
 847de3201eee54f9ed98c5d576e42718769d8d72b883ba3c1225233b20738535  data/germany-divergence-timeseries.csv
-8b314bf9aa6b52757bb19c1a87fa1cb18334b1f20888b4b514a7e6c700cde3bc  README.md
+8af3f2c0742ccfdbd94a38b3af0116f7d8ada6b7638c7f3698bbd54a7caa590f  README.md
 acd4ea4dbaddc5ffb3c254606c754eac3431f65b5bef2ebd89402cdc75772d70  data/germany-structural-context.csv
-af8ea40940831e70b86410e83cf4bb58f26a145f70f0053d72a8d774d1194950  polls/germany-polls.csv
 bebb0d046f768c33b01b8a00ebb7ea9162e7176c4911f4956c58d972bae6aa67  DATA_DICTIONARY.md
 d4c4ed12b415351d25a10c7d5fa4f955f9cf9c3c40ec8d6f469f5506f9a91745  .gitignore
 dd2369485e17559662dbd5392ab9df47bd4f796c7fafcfcea354d1f69002d76e  build-germany-market-divergence.mjs

README.md

@@ -119,5 +119,5 @@ Beyond the divergence data, this dataset ships `data/germany-structural-context.
 ## Provenance and reproducibility (v1.2.0)
 - **raw/ vs. derived.** `raw/` holds immutable source pulls: the Polymarket snapshot(s) (`*-poly-raw.json`) and the official result (`germany-2025-official-result.json`). The CSVs under `data/`, `polls/` and `news/` are derived/transcribed series.
 - **Validated against the official result.** Winner: CDU/CSU (Friedrich Merz). Source: Bundeswahlleiterin (Federal Returning Officer), Germany. See `raw/germany-2025-official-result.json`.
-- **Poll disclosure.** The poll series carries per-row pollster, fieldwork date and sample size. Per-row source URLs are being added in a follow-up pass (recoverable via the source aggregation).
+- **Poll disclosure.** The poll series carries per-row pollster, fieldwork date and sample size. Each poll row now carries a **page-level** `source_url` (the Wikipedia opinion-polling page it was compiled from: https://en.wikipedia.org/wiki/Opinion_polling_for_the_2025_German_federal_election); per-pollster report URLs remain a future enhancement (the source aggregation footnotes were not retained per row).
 - **Integrity.** `datapackage.json` (Frictionless, validated), `croissant.json` (MLCommons) and `CHECKSUMS.txt` (SHA-256) describe and verify every file.

croissant.json

@@ -68,7 +68,7 @@
       "name": "polls/germany-polls.csv",
       "contentUrl": "polls/germany-polls.csv",
       "encodingFormat": "text/csv",
-      "sha256": "af8ea40940831e70b86410e83cf4bb58f26a145f70f0053d72a8d774d1194950"
+      "sha256": "10d39d8cf1c625daf8b107f4eacc753dd0ac3c5ad12a37f5c3cdbd3555b6486d"
     }
   ],
   "recordSet": [
@@ -566,6 +566,20 @@
               "column": "percent"
             }
           }
+        },
+        {
+          "@type": "cr:Field",
+          "@id": "polls-germany-polls/source_url",
+          "name": "source_url",
+          "dataType": "sc:Text",
+          "source": {
+            "fileObject": {
+              "@id": "polls/germany-polls.csv"
+            },
+            "extract": {
+              "column": "source_url"
+            }
+          }
         }
       ]
     }

datapackage.json

@@ -259,6 +259,10 @@
           {
             "name": "percent",
             "type": "number"
+          },
+          {
+            "name": "source_url",
+            "type": "string"
           }
         ],
         "missingValues": [
@@ -268,7 +272,7 @@
           "-"
         ]
       },
-      "hash": "sha256:af8ea40940831e70b86410e83cf4bb58f26a145f70f0053d72a8d774d1194950"
+      "hash": "sha256:10d39d8cf1c625daf8b107f4eacc753dd0ac3c5ad12a37f5c3cdbd3555b6486d"
     }
   ]
 }