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

backend/app/routers/techniques.py

@@ -6,7 +6,7 @@ exceptions to HTTP responses automatically.
 """
 
 from fastapi import APIRouter, Depends, Query, status
-from sqlalchemy.orm import Session, joinedload
+from sqlalchemy.orm import Session
 
 from app.database import get_db
 from app.dependencies.auth import get_current_user, require_role, require_any_role
@@ -18,7 +18,6 @@ from app.domain.unit_of_work import UnitOfWork
 from app.infrastructure.persistence.repositories.sa_technique_repository import (
     SATechniqueRepository,
 )
-from app.models.technique import Technique
 from app.models.user import User
 from app.schemas.technique import (
     TechniqueCreate,
@@ -27,7 +26,7 @@ from app.schemas.technique import (
     TechniqueUpdate,
 )
 from app.services.audit_service import log_action
-from app.services.d3fend_import_service import get_defenses_for_technique
+from app.services.technique_query_service import get_technique_detail
 
 router = APIRouter(prefix="/techniques", tags=["techniques"])
 
@@ -67,45 +66,7 @@ def get_technique(
     current_user: User = Depends(get_current_user),
 ):
     """Return full details for a single technique, including its 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,
-    }
+    return get_technique_detail(db, mitre_id)
 
 
 # ---------------------------------------------------------------------------