feat(fusion_accounting_ai): bank_rec_prompt for AI re-rank step

Provider-agnostic system + user prompt builder for the confidence
scoring pipeline's Pass 3 (AI re-rank). Output contract is JSON with
"ranked" array; works with OpenAI, Claude, and local OpenAI-compatible
servers (LM Studio, Ollama).

Made-with: Cursor

fusion_accounting_bank_rec/tests/__init__.py

@@ -9,3 +9,4 @@ from . import test_reconcile_engine_unit
 from . import test_reconcile_engine_property
 from . import test_factories
 from . import test_reconcile_engine_integration
+from . import test_bank_rec_prompt

fusion_accounting_bank_rec/tests/test_bank_rec_prompt.py

@@ -0,0 +1,92 @@
+"""Smoke tests for bank_rec_prompt module."""
+
+from odoo.tests.common import TransactionCase, tagged
+from odoo.addons.fusion_accounting_ai.services.prompts.bank_rec_prompt import (
+    SYSTEM_PROMPT,
+    build_prompt,
+)
+from odoo.addons.fusion_accounting_bank_rec.services.confidence_scoring import (
+    ScoredCandidate,
+)
+from . import _factories as f
+
+
+@tagged('post_install', '-at_install')
+class TestBankRecPrompt(TransactionCase):
+
+    def setUp(self):
+        super().setUp()
+        self.partner = self.env['res.partner'].create({'name': 'Prompt Test Partner'})
+        self.bank_line = f.make_bank_line(
+            self.env,
+            amount=1847.50,
+            partner=self.partner,
+            memo='RBC ETF DEP REF 4831',
+        )
+        self.scored = [
+            ScoredCandidate(
+                candidate_id=101,
+                confidence=0.92,
+                reasoning='Exact amount match',
+                score_amount_match=1.0,
+                score_partner_pattern=0.5,
+                score_precedent_similarity=0.85,
+            ),
+            ScoredCandidate(
+                candidate_id=102,
+                confidence=0.71,
+                reasoning='Close amount',
+                score_amount_match=0.95,
+                score_partner_pattern=0.5,
+                score_precedent_similarity=0.6,
+            ),
+        ]
+
+    def test_system_prompt_requires_json_output(self):
+        self.assertIn('JSON', SYSTEM_PROMPT)
+        self.assertIn('"ranked"', SYSTEM_PROMPT)
+
+    def test_build_prompt_returns_tuple(self):
+        result = build_prompt(self.bank_line, self.scored)
+        self.assertEqual(len(result), 2)
+        system, user = result
+        self.assertIsInstance(system, str)
+        self.assertIsInstance(user, str)
+
+    def test_user_prompt_includes_bank_line_details(self):
+        _, user = build_prompt(self.bank_line, self.scored)
+        self.assertIn('1847.5', user)
+        self.assertIn('RBC ETF DEP REF 4831', user)
+        self.assertIn('Prompt Test Partner', user)
+
+    def test_user_prompt_includes_all_candidates(self):
+        _, user = build_prompt(self.bank_line, self.scored)
+        self.assertIn('candidate_id=101', user)
+        self.assertIn('candidate_id=102', user)
+
+    def test_user_prompt_omits_pattern_section_when_none(self):
+        _, user = build_prompt(self.bank_line, self.scored, pattern=None)
+        self.assertNotIn('PARTNER PATTERN', user)
+
+    def test_user_prompt_includes_pattern_section_when_provided(self):
+        pattern = f.make_pattern(self.env, partner=self.partner, reconcile_count=15)
+        _, user = build_prompt(self.bank_line, self.scored, pattern=pattern)
+        self.assertIn('PARTNER PATTERN', user)
+        self.assertIn('15', user)
+
+    def test_user_prompt_includes_precedents_when_provided(self):
+        from odoo.addons.fusion_accounting_bank_rec.services.precedent_lookup import (
+            PrecedentMatch,
+        )
+        precedents = [
+            PrecedentMatch(
+                precedent_id=1,
+                amount=1847.50,
+                memo_tokens='RBC,ETF',
+                matched_move_line_count=1,
+                similarity_score=0.95,
+            ),
+        ]
+        _, user = build_prompt(self.bank_line, self.scored, precedents=precedents)
+        self.assertIn('RECENT PRECEDENTS', user)
+        self.assertIn('0.95', user)