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>

app/modules/prospecting/tests/unit/test_stats_service.py

@@ -0,0 +1,36 @@
+# app/modules/prospecting/tests/unit/test_stats_service.py
+"""
+Unit tests for StatsService.
+"""
+
+import pytest
+
+from app.modules.prospecting.services.stats_service import StatsService
+
+
+@pytest.mark.unit
+@pytest.mark.prospecting
+class TestStatsService:
+    """Tests for StatsService."""
+
+    def setup_method(self):
+        self.service = StatsService()
+
+    def test_get_overview_empty(self, db):
+        """Test overview stats with no data."""
+        stats = self.service.get_overview(db)
+        assert "total_prospects" in stats
+        assert stats["total_prospects"] == 0
+
+    def test_get_overview_with_data(self, db, digital_prospect, offline_prospect):
+        """Test overview stats with data."""
+        stats = self.service.get_overview(db)
+        assert stats["total_prospects"] >= 2
+        assert stats["digital_count"] >= 1
+        assert stats["offline_count"] >= 1
+
+    def test_get_scan_jobs_empty(self, db):
+        """Test getting scan jobs when none exist."""
+        jobs, total = self.service.get_scan_jobs(db)
+        assert total == 0
+        assert jobs == []