feat(hosting,prospecting): add hosting unit tests and fix template bugs

- Add 55 unit tests for hosting module (hosted site service, client
  service service, stats service) with full fixture setup
- Fix table_empty_state macro: add x_message param for dynamic Alpine.js
  expressions rendered via x-text instead of server-side Jinja
- Fix hosting templates (sites, clients) using message= with Alpine
  expressions that rendered as literal text
- Fix prospecting templates (leads, scan-jobs, prospects) using
  nonexistent subtitle= param, migrated to x_message=
- Align hosting and prospecting admin templates with shared design system

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

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

@@ -0,0 +1,66 @@
+# app/modules/hosting/tests/unit/test_stats_service.py
+"""
+Unit tests for hosting StatsService.
+"""
+
+import pytest
+
+from app.modules.hosting.services.stats_service import StatsService
+
+
+@pytest.mark.unit
+@pytest.mark.hosting
+class TestStatsService:
+    """Tests for hosting StatsService."""
+
+    def setup_method(self):
+        self.service = StatsService()
+
+    def test_dashboard_stats_empty(self, db):
+        """Test dashboard stats with no data."""
+        stats = self.service.get_dashboard_stats(db)
+        assert stats["total_sites"] == 0
+        assert stats["live_sites"] == 0
+        assert stats["poc_sites"] == 0
+        assert stats["active_services"] == 0
+        assert stats["monthly_revenue_cents"] == 0
+        assert stats["upcoming_renewals"] == 0
+
+    def test_dashboard_stats_with_site(self, db, hosted_site):
+        """Test dashboard stats with a draft site."""
+        stats = self.service.get_dashboard_stats(db)
+        assert stats["total_sites"] >= 1
+        assert stats["poc_sites"] >= 1  # draft counts as POC
+        assert stats["sites_by_status"].get("draft", 0) >= 1
+
+    def test_dashboard_stats_with_services(
+        self, db, hosted_site, client_service_domain, client_service_email
+    ):
+        """Test dashboard stats with active services."""
+        stats = self.service.get_dashboard_stats(db)
+        assert stats["active_services"] >= 2
+        assert stats["monthly_revenue_cents"] >= 3000  # 2500 + 500
+
+    def test_dashboard_stats_services_by_type(
+        self, db, hosted_site, client_service_domain, client_service_email
+    ):
+        """Test services_by_type breakdown."""
+        stats = self.service.get_dashboard_stats(db)
+        assert "domain" in stats["services_by_type"]
+        assert "email" in stats["services_by_type"]
+
+    def test_dashboard_stats_upcoming_renewals(
+        self, db, hosted_site, client_service_expiring
+    ):
+        """Test upcoming renewals count."""
+        stats = self.service.get_dashboard_stats(db)
+        assert stats["upcoming_renewals"] >= 1
+
+    def test_dashboard_stats_sites_by_status(
+        self, db, hosted_site, hosted_site_poc_ready
+    ):
+        """Test sites_by_status breakdown."""
+        stats = self.service.get_dashboard_stats(db)
+        assert isinstance(stats["sites_by_status"], dict)
+        total_from_breakdown = sum(stats["sites_by_status"].values())
+        assert total_from_breakdown == stats["total_sites"]