feat: move all remaining inline logic from routers to services (Tier 2)

backend/app/services/technique_query_service.py

@@ -0,0 +1,48 @@
+"""Technique query service — framework-agnostic queries for technique details."""
+from __future__ import annotations
+
+from sqlalchemy.orm import Session, joinedload
+
+from app.domain.errors import EntityNotFoundError
+from app.models.technique import Technique
+from app.services.d3fend_import_service import get_defenses_for_technique
+
+
+def get_technique_detail(db: Session, mitre_id: str) -> dict:
+    """Fetch full technique details including tests and D3FEND defenses."""
+    technique = (
+        db.query(Technique)
+        .options(joinedload(Technique.tests))
+        .filter(Technique.mitre_id == mitre_id)
+        .first()
+    )
+    if technique is None:
+        raise EntityNotFoundError("Technique", mitre_id)
+    defenses = get_defenses_for_technique(db, technique.id)
+    return {
+        "id": str(technique.id),
+        "mitre_id": technique.mitre_id,
+        "name": technique.name,
+        "description": technique.description,
+        "tactic": technique.tactic,
+        "platforms": technique.platforms or [],
+        "mitre_version": technique.mitre_version,
+        "mitre_last_modified": technique.mitre_last_modified,
+        "is_subtechnique": technique.is_subtechnique,
+        "parent_mitre_id": technique.parent_mitre_id,
+        "status_global": technique.status_global.value if technique.status_global else "not_evaluated",
+        "review_required": technique.review_required,
+        "last_review_date": technique.last_review_date,
+        "tests": [
+            {
+                "id": str(t.id),
+                "name": t.name,
+                "state": t.state.value if t.state else None,
+                "result": t.result.value if t.result else None,
+                "platform": t.platform,
+                "created_at": t.created_at.isoformat() if t.created_at else None,
+            }
+            for t in technique.tests
+        ],
+        "d3fend_defenses": defenses,
+    }