docs(perturbation-sim): publish ODbL topology as a Release asset (not committed)

Created GitHub Release perturbation-sim-data-v0.1 on AdaWorldAPI/lance-graph with
buses.csv + lines.csv (PyPSA-Eur/OSM, ODbL, © OSM contributors) attached as
assets — so clones never auto-pull the data and the repo stays lean. Official
Spanish PDFs remain links-only (not re-hosted, licensing). DATA_SOURCES.md +
HARVESTING.md updated with the release mirror curl recipe and a no-data-in-git
note.

Author: claude

crates/perturbation-sim/DATA_SOURCES.md

@@ -5,11 +5,17 @@ with format / openness / extraction reality. Keeps provenance in one place
 (anti-dilution: one ledger, not URLs scattered across commits). Honesty column
 flags what is actually usable today vs needs extraction.
 
+> **No data is committed to the repo.** The consumable ODbL topology lives as a
+> GitHub **Release** asset (`perturbation-sim-data-v0.1`, §1) so clones stay
+> lean and nothing auto-pulls; official Spanish PDFs are referenced by link, not
+> re-hosted (licensing). Fetch on demand with the `curl` recipes below.
+
 ## 1. Topology + electrical parameters (→ `ingest.rs`, the `Grid`)
 
 | Source | Feeds | Format | Open | Note |
 |---|---|---|---|---|
 | [Zenodo 13358976 — PyPSA-Eur/OSM prebuilt network](https://zenodo.org/records/13358976) | buses+lines, 35 ctry incl. ES | CSV | ODbL | **primary.** v0.3 is topology + voltage + circuits + length only → `r`/`x`/`s_nom` estimated (see `HARVESTING.md`) |
+| [**Release mirror** `perturbation-sim-data-v0.1`](https://github.com/AdaWorldAPI/lance-graph/releases/tag/perturbation-sim-data-v0.1) | `buses.csv` + `lines.csv` | CSV | ODbL (© OSM contributors) | the ODbL data attached as a **GitHub Release asset** so it is **never committed / auto-pulled** by a clone — `curl -L .../releases/download/perturbation-sim-data-v0.1/buses.csv`. Official Spanish PDFs are NOT re-hosted (links only) |
 | [Nature SciData 2025](https://www.nature.com/articles/s41597-025-04550-7) · [arXiv 2408.17178](https://arxiv.org/pdf/2408.17178) | the method | paper | open | how the OSM grid was built (5 km substation aggregation) |
 | [PyPSA-Eur](https://github.com/PyPSA/pypsa-eur/) | full workflow → real `x,r,s_nom` | code | open | run upstream if you want PyPSA's own line parameters |
 | [OSM Power networks](https://wiki.openstreetmap.org/wiki/Power_networks) (Overpass) | raw lines/substations | XML/JSON | ODbL | full control; you estimate electrical params |

crates/perturbation-sim/HARVESTING.md

@@ -18,8 +18,12 @@ already understands, or add an alias."
 
 ```sh
 mkdir -p /tmp/pypsa && cd /tmp/pypsa
+# Either the canonical Zenodo source …
 curl -L -o buses.csv 'https://zenodo.org/records/13358976/files/buses.csv?download=1'
 curl -L -o lines.csv 'https://zenodo.org/records/13358976/files/lines.csv?download=1'
+# … or our ODbL release mirror (same files, kept out of git):
+#   R=https://github.com/AdaWorldAPI/lance-graph/releases/download/perturbation-sim-data-v0.1
+#   curl -L -o buses.csv $R/buses.csv ; curl -L -o lines.csv $R/lines.csv
 cargo run --manifest-path crates/perturbation-sim/Cargo.toml --example iberian -- \
     /tmp/pypsa/buses.csv /tmp/pypsa/lines.csv ES        # ← any ISO-2 code: FR, PT, DE, IT…
 ```