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>

pyproject.toml

@@ -159,6 +159,7 @@ testpaths = [
     "app/modules/dev_tools/tests",
     "app/modules/monitoring/tests",
     "app/modules/analytics/tests",
+    "app/modules/prospecting/tests",
 ]
 python_files = ["test_*.py", "*_test.py"]
 python_classes = ["Test*"]
@@ -221,6 +222,7 @@ markers = [
     "cart: marks tests related to shopping cart module",
     "dev_tools: marks tests related to developer tools module",
     "analytics: marks tests related to analytics module",
+    "prospecting: marks tests related to prospecting and lead generation module",
     "inventory_module: marks tests related to inventory module",
     # Component markers
     "service: marks tests for service layer",