feat(prospecting): add complete prospecting module for lead discovery and scoring

Migrates scanning pipeline from marketing-.lu-domains app into Orion module.
Supports digital (domain scan) and offline (manual capture) lead channels
with enrichment, scoring, campaign management, and interaction tracking.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

scripts/validate/base_validator.py

@@ -64,6 +64,7 @@ class BaseValidator(ABC):
         ".pytest_cache", ".mypy_cache", "dist", "build", "*.egg-info",
         "migrations", "alembic/versions", ".tox", "htmlcov",
         "site",  # mkdocs build output
+        "scripts/security-audit",  # needs revamping
     ]
 
     # Regex for noqa comments. Supports both ruff-compatible (SEC001) and