feat(fusion_accounting_ai): wire ReportsAdapter fusion paths to engine

Adds three new method families on ReportsAdapter that route through
fusion.report.engine when fusion_accounting_reports is installed:

- run_fusion_report (pnl/balance_sheet/trial_balance/general_ledger)
- get_anomalies (variance detection on engine output)
- get_commentary (LLM narrative; falls back to templated)

These coexist with the legacy ref_id-shaped run_report / export_report
API so existing reporting tools (profit_loss, balance_sheet, etc.) keep
working unchanged. FUSION_MODEL is updated to fusion.report.engine so
mode detection picks FUSION when the new engine is installed.

4 new TransactionCase tests cover the fusion + community paths.

Made-with: Cursor

fusion_accounting_reports/__manifest__.py

@@ -1,6 +1,6 @@
 {
     'name': 'Fusion Accounting Reports',
-    'version': '19.0.1.0.14',
+    'version': '19.0.1.0.15',
     'category': 'Accounting/Accounting',
     'summary': 'AI-augmented financial reports (P&L, balance sheet, trial balance, GL).',
     'description': """

fusion_accounting_reports/tests/__init__.py

@@ -11,3 +11,4 @@ from . import test_commentary_generator
 from . import test_fusion_report_commentary
 from . import test_fusion_report_anomaly
 from . import test_reports_controller
+from . import test_reports_adapter

fusion_accounting_reports/tests/test_reports_adapter.py

@@ -0,0 +1,56 @@
+"""Tests for ReportsAdapter Phase-2 (engine-routed) methods."""
+
+from odoo.tests.common import TransactionCase, tagged
+
+from odoo.addons.fusion_accounting_ai.services.data_adapters.reports import (
+    ReportsAdapter,
+)
+
+
+@tagged('post_install', '-at_install')
+class TestReportsAdapter(TransactionCase):
+
+    def setUp(self):
+        super().setUp()
+        self.adapter = ReportsAdapter(self.env)
+
+    def test_run_fusion_report_via_fusion_pnl(self):
+        result = self.adapter.run_fusion_report_via_fusion(
+            report_type='pnl',
+            date_from='2026-01-01',
+            date_to='2026-12-31',
+            company_id=self.env.company.id,
+        )
+        self.assertEqual(result.get('report_type'), 'pnl')
+        self.assertIn('rows', result)
+
+    def test_run_fusion_report_via_community_returns_error(self):
+        result = self.adapter.run_fusion_report_via_community(
+            report_type='pnl',
+            date_from='2026-01-01',
+            date_to='2026-12-31',
+        )
+        self.assertIn('error', result)
+
+    def test_get_anomalies_via_fusion(self):
+        result = self.adapter.get_anomalies_via_fusion(
+            report_type='pnl',
+            date_from='2026-01-01',
+            date_to='2026-12-31',
+            comparison='previous_year',
+            company_id=self.env.company.id,
+        )
+        self.assertIn('anomalies', result)
+        self.assertIsInstance(result['anomalies'], list)
+
+    def test_get_commentary_via_fusion(self):
+        result = self.adapter.get_commentary_via_fusion(
+            report_type='pnl',
+            date_from='2026-01-01',
+            date_to='2026-12-31',
+            company_id=self.env.company.id,
+        )
+        self.assertIn('summary', result)
+        self.assertIn('highlights', result)
+        self.assertIn('concerns', result)
+        self.assertIn('next_actions', result)