feat(cybersecurity): 8 IoC regex extractors + extract_iocs pipeline puro

Extractores nuevos en python/functions/cybersecurity/:
- extract_ip_addresses (IPv4 + IPv6 con validacion ipaddress)
- extract_emails (RFC 5322 simplificado)
- extract_domains (FQDNs con TLD valido, lista estatica)
- extract_file_hashes (MD5/SHA1/SHA256/SHA512, algoritmo por longitud)
- extract_crypto_wallets (BTC legacy + bech32, ETH 0x+40hex)
- extract_cve_ids (CVE-YYYY-NNNN+)
- extract_mac_addresses (xx:xx:xx + xx-xx-xx, separador uniforme)
- extract_phone_numbers (E.164 + ES local 9 digitos)

Pipeline:
- extract_iocs corre todos, deduplica spans contenidos. Mantiene
  purity:pure (kind:function con uses_functions no vacio) porque la
  regla del registry exige que los pipelines sean impuros.

Todas devuelven list[dict] con value/start/end/type para que el
caller (issues 0038-0040) pueda reconciliar offsets con spans NER
sin reparsing.

Refs #0037

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

python/functions/cybersecurity/__init__.py

@@ -12,6 +12,15 @@ from .cybersecurity import (
     envelope_encrypt,
     envelope_decrypt,
 )
+from .extract_ip_addresses import extract_ip_addresses
+from .extract_emails import extract_emails
+from .extract_domains import extract_domains
+from .extract_file_hashes import extract_file_hashes
+from .extract_crypto_wallets import extract_crypto_wallets
+from .extract_cve_ids import extract_cve_ids
+from .extract_mac_addresses import extract_mac_addresses
+from .extract_phone_numbers import extract_phone_numbers
+from .extract_iocs import extract_iocs
 
 __all__ = [
     "hash_sha256",
@@ -26,4 +35,13 @@ __all__ = [
     "normalize_url",
     "envelope_encrypt",
     "envelope_decrypt",
+    "extract_ip_addresses",
+    "extract_emails",
+    "extract_domains",
+    "extract_file_hashes",
+    "extract_crypto_wallets",
+    "extract_cve_ids",
+    "extract_mac_addresses",
+    "extract_phone_numbers",
+    "extract_iocs",
 ]