feat(tests): make Expected Detection editable when creating a test from template

Leads can now edit Expected Detection in the create-from-template
form, same as Suggested Attack Procedure — the edit seeds the new
test's detect_procedure via a detect_procedure_override, without
touching the template itself. The template only updates later through
the existing procedure-suggestion approval flow, once a round is
actually submitted — same mechanism as the red side, no new bypass.

backend/app/routers/tests.py

@@ -402,6 +402,7 @@ def create_test_from_template(
             platform_override=payload.platform,
             procedure_text_override=payload.procedure_text,
             tool_used_override=payload.tool_used,
+            detect_procedure_override=payload.detect_procedure,
         )
         # Call log_action()
         log_action(

backend/app/schemas/test_template.py

@@ -130,3 +130,4 @@ class TestTemplateInstantiate(BaseModel):
     platform: str | None = None
     procedure_text: str | None = None
     tool_used: str | None = None
+    detect_procedure: str | None = None

backend/app/services/test_crud_service.py

@@ -304,6 +304,7 @@ def create_test_from_template(
     platform_override: str | None = None,
     procedure_text_override: str | None = None,
     tool_used_override: str | None = None,
+    detect_procedure_override: str | None = None,
 ) -> Test:
     """Instantiate a Test from a TestTemplate.
 
@@ -364,7 +365,7 @@ def create_test_from_template(
         platform=platform_override if platform_override is not None else template.platform,
         procedure_text=procedure_text_override if procedure_text_override is not None else template.attack_procedure,
         tool_used=tool_used_override if tool_used_override is not None else template.tool_suggested,
-        detect_procedure=template.expected_detection,
+        detect_procedure=detect_procedure_override if detect_procedure_override is not None else template.expected_detection,
         remediation_steps=template.suggested_remediation,
         # Keyword argument: created_by
         created_by=creator_id,