Card: correct the provenance claim (manufacturer pages and independent repair references)

README.md

@@ -70,10 +70,10 @@ Portal: https://appliancedb.dataengineered.io/ · Docs & data dictionary: https:
 
 ## License
 
-**ODbL-1.0** (Open Database License). Facts re-derived from official manufacturer support listings with per-row source URLs; meanings and repair steps paraphrased into original wording.
+**ODbL-1.0** (Open Database License). Facts re-derived from fetched source listings — manufacturer support pages or independent appliance-repair reference sites, flagged per row in `source_type` — with per-row source URLs; meanings and repair steps paraphrased into original wording.
 
 ## Provenance & Methodology
 
-Every code fact is re-derived from an official manufacturer support listing (LG, Samsung, GE) with the exact source URL recorded per row; all meanings and repair steps are paraphrased into original wording (no verbatim manufacturer prose). Repair ranks carry an explicit basis (manufacturer_first). Costs are left NULL where no verified price observation exists — never guessed. Each release is built by a deterministic, test-gated pipeline (composite-uniqueness, controlled-vocabulary, rank-contiguity, and >=10-codes-per-pair coverage gates).
+Codes come from two kinds of fetched listing, flagged per row in source_type: 239 from official manufacturer support pages (manufacturer_listing) and 199 from independent appliance-repair reference sites (aggregator_listing: ApplianceAid, ApplianceCodeHub, Domex UK, Whitegoods Help), used where the manufacturer's own listing was unfetchable or too thin. The exact source URL is recorded per row; filter on source_type for manufacturer-only data. All meanings and repair steps are paraphrased into original wording (no verbatim source prose). Repair ranks carry an explicit basis (cost_ascending or manufacturer_first). Costs are left NULL where no verified price observation exists — never guessed. Each release is built by a deterministic, test-gated pipeline (composite-uniqueness, controlled-vocabulary, rank-contiguity, and >=10-codes-per-pair coverage gates).
 
 Full documentation and data dictionary: https://github.com/ApplianceDB/ApplianceDB-public