feat: law-source-eurlex 0.1.0 (source.eu-recht)

Fetch one EU legal act from EUR-Lex by CELEX number and return its
FORMEX-4 XML content-addressed (SHA-256), so a flow's audit trail
pins the exact Gesetzesstand it processed.

- CELLAR content negotiation (application/xml;type=fmx4) on
  publications.europa.eu; 303 multiple-choice item selection
- host-pinned redirect handling (max 3 hops), 64 MB body cap
- consolidated CELEX (0...-YYYYMMDD) yields consolidation_date
- net permission pinned to publications.europa.eu; no auth
- 10 unit tests (no network), wasm32-wasip2 build green

Signed-off-by: flemming-it <sf@flemming.it>

STORE.yaml

@@ -0,0 +1,28 @@
+schema_version: 1
+
+author:
+  name: "Flemming.AI"
+  email: chain@flemming.ai
+  url: https://flemming.ai
+
+license: Apache-2.0
+
+tagline:
+  en: "Fetch EU legal acts from EUR-Lex by CELEX"
+  de: "EU-Rechtsakte per CELEX von EUR-Lex holen"
+
+description:
+  en: "Resolves a CELEX number against the public EUR-Lex endpoint and returns the act's FORMEX-4 XML, content-addressed (SHA-256) so the audit trail pins the exact legal state processed."
+  de: "Löst eine CELEX-Nummer gegen den öffentlichen EUR-Lex-Endpunkt auf und liefert das FORMEX-4-XML des Rechtsakts, inhaltsadressiert (SHA-256) — das Prüfprotokoll hält den exakten Gesetzesstand fest."
+
+category: data
+tags: [legal, eu, eur-lex, formex, source]
+
+assets:
+  icon: assets/icon.svg
+
+documentation:
+  long_description: MODULE.md
+
+links:
+  repository: https://git.flemming.ai/chain-modules/law-source-eurlex