feat(fusion_accounting_ai): 5 new customer follow-up AI tools

Adds Task 17 tool layer:
- fusion_list_overdue
- fusion_get_partner_followup_detail
- fusion_generate_followup_text
- fusion_send_followup
- fusion_get_partner_risk_score

Tools register through TOOL_DISPATCH and degrade with a clear
error message when fusion_accounting_followup is not installed.
5 TransactionCase tests added (78 total).

Made-with: Cursor

fusion_accounting_followup/__manifest__.py

@@ -1,6 +1,6 @@
 {
     'name': 'Fusion Accounting Follow-up',
-    'version': '19.0.1.0.16',
+    'version': '19.0.1.0.17',
     'category': 'Accounting/Accounting',
     'summary': 'AI-augmented customer follow-ups (dunning) for unpaid invoices.',
     'description': """

fusion_accounting_followup/tests/__init__.py

@@ -12,3 +12,4 @@ from . import test_fusion_followup_engine
 from . import test_engine_integration
 from . import test_followup_controller
 from . import test_followup_adapter
+from . import test_followup_tools

fusion_accounting_followup/tests/test_followup_tools.py

@@ -0,0 +1,61 @@
+"""AI tool dispatch tests for fusion follow-up tools."""
+
+from odoo.tests import tagged
+from odoo.tests.common import TransactionCase
+
+from odoo.addons.fusion_accounting_ai.services.tools import customer_followup as tools
+
+
+@tagged('post_install', '-at_install')
+class TestFusionFollowupTools(TransactionCase):
+
+    def test_fusion_list_overdue(self):
+        result = tools.fusion_list_overdue(
+            self.env, {'company_id': self.env.company.id},
+        )
+        self.assertIn('partners', result)
+
+    def test_fusion_get_partner_detail(self):
+        partner = self.env['res.partner'].create({
+            'name': 'Tool Partner', 'email': 't@t.local',
+        })
+        result = tools.fusion_get_partner_followup_detail(
+            self.env, {'partner_id': partner.id},
+        )
+        self.assertEqual(result['partner_id'], partner.id)
+
+    def test_fusion_generate_text_uses_fallback(self):
+        self.env['ir.config_parameter'].sudo().search([
+            ('key', 'in', [
+                'fusion_accounting.provider.followup_text',
+                'fusion_accounting.provider.default',
+            ]),
+        ]).unlink()
+        result = tools.fusion_generate_followup_text(self.env, {
+            'partner_name': 'Acme', 'total_overdue': 1000,
+            'currency_code': 'USD', 'longest_overdue_days': 15,
+            'tone': 'gentle',
+        })
+        self.assertIn('subject', result)
+        self.assertIn('body', result)
+
+    def test_fusion_get_risk_score(self):
+        partner = self.env['res.partner'].create({'name': 'Risk Test'})
+        result = tools.fusion_get_partner_risk_score(
+            self.env, {'partner_id': partner.id},
+        )
+        self.assertIn('risk', result)
+
+    def test_tools_registered_in_dispatch(self):
+        from odoo.addons.fusion_accounting_ai.services.tools import TOOL_DISPATCH
+        for tool_name in [
+            'fusion_list_overdue',
+            'fusion_get_partner_followup_detail',
+            'fusion_generate_followup_text',
+            'fusion_send_followup',
+            'fusion_get_partner_risk_score',
+        ]:
+            self.assertIn(
+                tool_name, TOOL_DISPATCH,
+                f"{tool_name} not registered in TOOL_DISPATCH",
+            )