feat: qualité DP Phase 2 — filtre OCR étendu, abréviations médicales, promotion DAS→DP

- Filtre OCR : regex étendu (opérateurs +-*/), artefacts temporels (années),
  seuil digits abaissé 0.50→0.48
- Dictionnaire 41 abréviations médicales françaises (BMR, BPCO, SDRA, OAP,
  IDM, SCA, AVC, ACFA, SIDA, TDAH, etc.) avec expand_medical_abbreviations()
  appelé sur diagnostics Trackare et DAS LLM
- Promotion DAS→DP : si aucun DP extrait, le meilleur DAS (scoring
  pertinence/confiance/spécificité) est promu avec traçabilité RULE-DAS-TO-DP
- 95 nouveaux tests (OCR, abréviations, promotion, scoring, non-régression)

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

tests/test_decision_engine.py

@@ -0,0 +1,150 @@
+"""Tests unitaires pour le moteur de décisions (promotion DAS→DP)."""
+
+from unittest.mock import patch
+
+import pytest
+
+from src.config import CodeDecision, Diagnostic, DossierMedical
+from src.quality.decision_engine import (
+    _das_promotion_score,
+    apply_decisions,
+    decision_summaries,
+)
+
+
+def _make_dossier(dp=None, das_list=None):
+    """Helper : crée un DossierMedical minimal."""
+    d = DossierMedical()
+    d.diagnostic_principal = dp
+    d.diagnostics_associes = das_list or []
+    return d
+
+
+def _make_diag(texte, code, confidence="high", source="trackare", status=None, cim10_final=None):
+    """Helper : crée un Diagnostic avec suggestion et optionnellement un final pré-rempli."""
+    return Diagnostic(
+        texte=texte,
+        cim10_suggestion=code,
+        cim10_confidence=confidence,
+        source=source,
+        status=status,
+        cim10_final=cim10_final,
+    )
+
+
+# --- Scoring ---
+
+class TestDasPromotionScore:
+    def test_pathology_beats_symptom(self):
+        patho = _make_diag("Pancréatite", "K85.9", cim10_final="K85.9")
+        symptom = _make_diag("Douleur abdominale", "R10.4", cim10_final="R10.4")
+        assert _das_promotion_score(patho) > _das_promotion_score(symptom)
+
+    def test_symptom_beats_zcode(self):
+        symptom = _make_diag("Douleur abdominale", "R10.4", cim10_final="R10.4")
+        zcode = _make_diag("Antécédent", "Z87.1", cim10_final="Z87.1")
+        assert _das_promotion_score(symptom) > _das_promotion_score(zcode)
+
+    def test_high_confidence_beats_medium(self):
+        high = _make_diag("Pancréatite", "K85.9", confidence="high", cim10_final="K85.9")
+        med = _make_diag("Pancréatite", "K85.9", confidence="medium", cim10_final="K85.9")
+        assert _das_promotion_score(high) > _das_promotion_score(med)
+
+    def test_longer_code_more_specific(self):
+        short = _make_diag("Pancréatite", "K85", cim10_final="K85")
+        long = _make_diag("Pancréatite biliaire", "K85.1", cim10_final="K85.1")
+        assert _das_promotion_score(long) > _das_promotion_score(short)
+
+
+# --- Promotion DAS→DP ---
+
+@patch("src.quality.decision_engine.load_reference_ranges", return_value={})
+@patch("src.quality.decision_engine.load_bio_rules", return_value={})
+class TestPromotionDasToDP:
+
+    @patch("src.quality.decision_engine.rule_enabled", return_value=True)
+    @patch("src.quality.decision_engine.cim10_validate", return_value=(True, "label"))
+    def test_promote_best_das_when_no_dp(self, mock_validate, mock_rule, mock_bio, mock_ref):
+        """DP absent + DAS valides → meilleur DAS promu (pathologie > symptôme > Z)."""
+        das1 = _make_diag("Douleur abdominale", "R10.4", confidence="high")
+        das2 = _make_diag("Pancréatite aiguë", "K85.9", confidence="high")
+        das3 = _make_diag("Antécédent chirurgical", "Z87.1", confidence="medium")
+        dossier = _make_dossier(dp=None, das_list=[das1, das2, das3])
+
+        apply_decisions(dossier)
+
+        assert dossier.diagnostic_principal is not None
+        assert dossier.diagnostic_principal.cim10_final == "K85.9"
+        assert dossier.diagnostic_principal.cim10_decision.action == "PROMOTE_DP"
+        assert "RULE-DAS-TO-DP" in dossier.diagnostic_principal.cim10_decision.applied_rules
+        # Le DAS promu est retiré de la liste
+        codes_das = [d.cim10_suggestion for d in dossier.diagnostics_associes]
+        assert "K85.9" not in codes_das
+        assert len(dossier.diagnostics_associes) == 2
+
+    @patch("src.quality.decision_engine.rule_enabled", return_value=True)
+    @patch("src.quality.decision_engine.cim10_validate", return_value=(True, "label"))
+    def test_no_promotion_when_dp_present(self, mock_validate, mock_rule, mock_bio, mock_ref):
+        """DP déjà présent → pas de promotion."""
+        dp = _make_diag("Cholécystite aiguë", "K81.0", confidence="high")
+        das1 = _make_diag("HTA", "I10", confidence="high")
+        dossier = _make_dossier(dp=dp, das_list=[das1])
+
+        apply_decisions(dossier)
+
+        assert dossier.diagnostic_principal.cim10_suggestion == "K81.0"
+        assert len(dossier.diagnostics_associes) == 1
+
+    @patch("src.quality.decision_engine.rule_enabled", return_value=True)
+    @patch("src.quality.decision_engine.cim10_validate", return_value=(True, "label"))
+    def test_no_promotion_for_ruled_out(self, mock_validate, mock_rule, mock_bio, mock_ref):
+        """DAS ruled_out ne doit pas être promu."""
+        das1 = _make_diag("Thrombopénie", "D69.6", status="ruled_out")
+        dossier = _make_dossier(dp=None, das_list=[das1])
+
+        apply_decisions(dossier)
+
+        # D69.6 est ruled_out donc cim10_final est None → pas candidat
+        assert dossier.diagnostic_principal is None
+
+    @patch("src.quality.decision_engine.rule_enabled", return_value=True)
+    @patch("src.quality.decision_engine.cim10_validate", return_value=(False, None))
+    def test_no_promotion_without_cim10_final(self, mock_validate, mock_rule, mock_bio, mock_ref):
+        """DAS sans cim10_final (code invalide) ne doit pas être promu."""
+        das1 = _make_diag("Diagnostic inconnu", "XXX.X")
+        dossier = _make_dossier(dp=None, das_list=[das1])
+
+        apply_decisions(dossier)
+
+        # Code invalide → cim10_final non rempli → pas candidat
+        assert dossier.diagnostic_principal is None
+
+    def test_no_promotion_when_rule_disabled(self, mock_bio, mock_ref):
+        """RULE-DAS-TO-DP désactivée → pas de promotion."""
+        def _rule_enabled_selective(rule_id):
+            if rule_id == "RULE-DAS-TO-DP":
+                return False
+            return True
+
+        with patch("src.quality.decision_engine.rule_enabled", side_effect=_rule_enabled_selective):
+            with patch("src.quality.decision_engine.cim10_validate", return_value=(True, "label")):
+                das1 = _make_diag("Pancréatite aiguë", "K85.9", confidence="high")
+                dossier = _make_dossier(dp=None, das_list=[das1])
+                apply_decisions(dossier)
+                assert dossier.diagnostic_principal is None
+
+
+# --- Summary handler ---
+
+class TestDecisionSummaryPromoteDP:
+    def test_promote_dp_summary(self):
+        dp = _make_diag("Pancréatite aiguë", "K85.9", cim10_final="K85.9")
+        dp.cim10_decision = CodeDecision(
+            action="PROMOTE_DP",
+            final_code="K85.9",
+            applied_rules=["RULE-DAS-TO-DP"],
+        )
+        dossier = _make_dossier(dp=dp)
+        lines = decision_summaries(dossier)
+        assert any("PROMOTE_DP" in line or "promu en DP" in line for line in lines)
+        assert any("K85.9" in line for line in lines)