feat(jira): per-user auth, lifecycle hooks, admin config endpoints

- Add jira_api_token field to User model + migration b042
- Per-user Jira client: user's corporate email + personal Atlassian token
- Admin-configurable Jira URL/project via system_configs (GET/PATCH /system/jira-config + POST /system/jira-test)
- Auto-create Jira ticket when a test is created (non-fatal)
- Push lifecycle comments on every state transition: draft→red_executing→blue_evaluating→in_review→validated/rejected→draft
- Rich ticket descriptions with technique, MITRE ID, priority from severity, labels
- UserOut.jira_token_set (bool) instead of exposing raw token
- PATCH /users/me/preferences now accepts jira_api_token

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

backend/app/routers/tests.py

@@ -145,6 +145,14 @@ def create_test(
         uow.commit()
     db.refresh(test)
 
+    # Auto-create Jira ticket (non-fatal — any failure is logged, not raised)
+    try:
+        from app.services.jira_service import auto_create_test_issue
+        auto_create_test_issue(db, test, current_user)
+        db.commit()
+    except Exception:
+        pass  # jira_service already logs warnings internally
+
     return test
 
 
@@ -191,6 +199,14 @@ def create_test_from_template(
         uow.commit()
     db.refresh(test)
 
+    # Auto-create Jira ticket (non-fatal)
+    try:
+        from app.services.jira_service import auto_create_test_issue
+        auto_create_test_issue(db, test, current_user)
+        db.commit()
+    except Exception:
+        pass
+
     return test